Answer:
below
Explanation:
Work = force x distance = PE gain = mgh = 4 kg * 9.81 m/s^2 * 6 = 235.44 j
Power = work / time ( time is in seconds)
= 235.44 / (2*60) = 1.962 watts
SPECIFIC power = 1.962 w / 4 kg = .49 w/kg
the electromagnetic spectrum of light can also be arranged int erms of wavelengths which one of the following has the kingest wavekength
The greatest energy, shortest wavelengths, and highest frequency are found in gamma rays. The lowest energy, longest wavelengths, and lowest frequencies of all EM radiation are found in radio waves.
Are people electromagnetic beings?Yes, radiation is produced by people. Most of the electromagnetic radiation that humans emit is infrared radiation, which has a frequency lower above visible light. This result does not just apply to people. Thermal radiation is produced by every item having a temperature greater than zero.
What exactly is electromagnetic energy?Radiant energy that moves in waves at the pace of light is known as electromagnetic energy. Radiant energy, electromagnetic waves, electromagnetic waves, illumination, or even the movement of irradiance are other names for it. Radiation from an electromagnetic field may transfer heat.
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the bar moves the instance after the switch is closed, assuming the force of gravity is directed into the paper, what is the height the bar goes to?
According to Newton's third law of motion, the height that a bar can be lifted against the pull of gravity is represented by an experienced force that is both equal in strength and directed.
What is gravity?Gravity, which means "weight" in Latin, is a basic interaction in physics that causes all objects with mass and energy to attract one another. The force that pulls items toward the center of a planet or even other entity is called gravity. Each of the planets are kept into the sun's orbit by gravity. Every physical thing in the universe is subject to the gravitational force, which is also known as gravitation. The gravity force tends to draw any two objects and particles with nonzero mass toward one another. With subatomic particles to galaxy clusters, gravity affects things of all sizes.
What force is a gravity?Any objects with mass are attracted to one another by the gravitational force, which is an attractive force whose magnitude is directly related to a masses of a two objects & inversely related to the square of their distance from one another.
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using the illustration in question 15, what would be the ip address of e0 if you were using the first subnet? the network id is 192.168.10.0/28, and you need to use the last available ip address in the range. again, the 0 subnet should not be considered valid for this question.
The IP address of E0 if you were using the first subnet is 192.168.10.142
A /28 is a 255.255.255.240 mask. Let's count to the ninth subnet (we need to find the broadcast address of the eighth subnet, so we need to count to the ninth subnet). Starting at 16 (remember, the question stated that we will not use subnet zero, so we start at 16, not 0), 16, 32, 48, 64, 80, 96, 112, 128, 144.
The eighth subnet is 128 and the next subnet is 144, so our broadcast address of the 128 subnet is 143. This makes the host range 129-142. 142 is the last valid host.
Therefore, the IP address of E0 if you were using the first subnet is 192.168.10.142
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suppose a telescope has two eyepieces: eyepiece a with focal length 10 mm and b with 20 mm. suppose the magnifying power with eyepiece a is 200. what is the magnifying power with eyepiece b? hint: it is an inverse (opposite) relationship between power and focal length.
With eyepiece b, the magnification is 100.
What distinguishes a telescope's 10 mm and 20 mm lenses?Simply dividing the focal length of the telescope by the focal length of the eyepiece yields the magnification. This implies that a higher magnification is provided by a smaller number on an eyepiece. The magnification offered by a 10mm eyepiece would be twice that of a 20mm eyepiece.
What is magnifying and how is it calculated?The ratio of the image's height to the object's height is represented by the formula for magnification. Additionally, the letter "m" stands for the object's magnification. Additionally, its formula is Magnification (m) is equal to h/h. Here, h is the object's height and h' is its the item's height.
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Analyze a steel shaft with an ultimate strength of 84 kpsi and fully corrected endurance limit of 26 kpsi if it undergoes a bending stress with mean and amplitude stresses of 8 and 8, respectively, while also undelzoing a torsional shear with mean and amplitude stresses of -12 and 10, respectively. Assume there are no stress concentrations or axial loads. Neglect yielding and use theGoodman failure criterion if needed. Report either the fatigue factor of safety if it is predicted to have infinite life, or the number of cycles to failure in thousands of cycles (N/103).
The stress range below which there is no crack growth and the material exhibits an infinite life under cyclic stresses is known as the endurance limit.
What is bending stress? The typical stress that an item can bear under external load at any cross-section is known as the bending stress. The ratio of the bending moment to the section modulus is another way to define the bending stress.Sb = Mc/I, where Sb is the bending stress in pounds per square inch, M is the maximum bending moment in pound-inches, I is the moment of inertia of the rail in (inches)4, and c is the distance in inches from the base of the rail to its neutral axis, is used to calculate the bending stress for the rail.The stress range below which there is no crack growth and the material exhibits an infinite life under cyclic stresses is known as the endurance limit.To learn more about endurance limit. refer,
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What type of modification affects an organism's expressed characteristics while leaving its DNA sequence unchanged?.
A frameshift mutation alters the open reading frame of a DNA sequence by adding or removing nucleotides. A deletion is a mutation that occurs when one nucleotide from the DNA sequence is removed.
Frameshift mutations, which alter the ribosome reading frame and cause premature translation termination at a new nonsense or chain termination codon, are deletions or additions of 1, 2, or 4 nucleotides (TAA, TAG, and TGA).
The reading frame, a grouping of nucleotides, might shift out of alignment as a result of mutations (changes in the DNA sequence), rendering the gene sequence unintelligible. Insertions (the addition of extra nucleotides) and deletions (the loss of one or more nucleotides) are the two different kinds of frameshift mutations.
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Are scientific models always accurate?.
Often they are not accurate because scientists may not have all the data.
A scientific model is a bodily and/or mathematical and/or conceptual representation of a system of ideas, occasions, or procedures. Scientists are seeking to perceive and recognize patterns in our world by drawing on their scientific understanding to offer motives that enable the styles to be anticipated.
Models are beneficial gear in studying science which may be used to enhance reasons, generate discussion, make predictions, provide visual representations of summary standards and generate intellectual models.
Benefits of modeling and simulation :
* Can be more secure and less expensive than the real international.
* Able to test a product or device that works earlier than building it.
* Can use it to discover unexpected troubles.
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a coil 4.15 cmcm in radius, containing 500 turns, is placed in a uniform magnetic field that varies with time according to b
As a result, the magnetic field changes throughout time. The coil's resistance is 640 ohms.
What is magnetic field?An electric charge, an electric current, and magnetic materials are all affected magnetically by a magnetic field, which is a vector field. A moving charge in a magnetic field is subject to a force that is perpendicular to the magnetic field and has its own speed. The magnetic field is the area that is affected by magnetism and is located around a magnet. When describing the distribution of the magnetic force within and around a magnetic object in nature, the magnetic field is a useful tool.
How does the magnetic field work?Similar poles repel one another, whereas diametrically opposed poles are attracted together. When an iron object is brushed against a magnet, its atoms' north-seeking poles align in the same direction. The force that the aligned atoms generate creates a magnetic field. The iron object has transformed into a magnet.
Briefing:Given that,
Coil's radius, r = 4.2 cm
N is the coil's turn count, which is 500.
The following equation provides the magnetic field:
The coil's resistance is 640 ohms.
The size of the coil's induced emf as a function of time must be determined. It's origin is:
Due to that,
Coil's radius, r = 4.2 cm
N is the coil's turn count, which is 500.
The magnetic field is described by the formula:
B=1.2×〖10〗^(-2) t+2.6×〖10〗^(-5) t^4
The coil's resistance is 640 ohms.
The size of the induced emf in the coil as a function of time must be determined. It is provided by:
€=(-dΦ)/dt
€=(-d(NBA))/dt
€=Nπr^2 (-dB)/dt
€=Nπr^2×(-d(1.2×〖10〗^(-2) t+〖2.6×10〗^(-5) t^4)/dt
€=Nπr^2×(1.2×〖10〗^(-2) t+10.4×〖10〗^(-5) t^3
€=500π×(4.2×〖10〗^(-2) )^2×(1.2×〖10〗^(-2)+10.4×〖10〗^(-5) t^3)
€=2.77(1.2×〖10〗^(-2)+10.4×〖10〗^(-5) t^3 )V
This is the necessary solution as a result.
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The correct the question
A coil 4.20 cm radius, containing 500 turns, is placed in a uniform magnetic field that varies with time according to B=( 1.20×10−2 T/s )t+( 2.60×10−5 T/s4 )t4. The coil is connected to a 640-Ω resistor, and its plane is perpendicular to the magnetic field. You can ignore the resistance of the coil.
a)Find the magnitude of the induced emf in the coil as a function of time.
A net force of 9,079 N i applied to a car having ma of 1,447 kg. Find the acceleration of the car
Answer:
[tex] \Huge{\boxed{6.27 m/s²}} [/tex]
Explanation:
The acceleration of the car given it's mass and the force acting on it can be found by using the formula
[tex] acceleration = \frac{force}{mass}\\ [/tex]
From the question
force = 9079 N
mass = 1447 kg
We have
[tex] acceleration= \frac{9079}{1447}\\ = 6.27436 [/tex]
We have the final answer as
6.27 m/s²four identical point masses are arranged on two crossed beams in four different configurations as shown. rank these configurations from lowest to highest total moment of inertia about an axis into / out of the screen through the crossing point of the beams.
The indicate alkanes in terms of e/z stereoisomer configuration is classified.
What is stereoisomer classification?
Stereoisomer are the molecule that have the same molecular formula and sequence of bonded atoms.
It have chemical bond but they have different spital arrangments. Stereoisomer have two types
configuration and conformational.
Sol-
Stereoisomer of alkanes A is Z higher priority in each carbon oriented.
Thus the stereochemisty of alkanes C can be classified as Z.
And the stereochemisty of alkanes D is classified as non of either as per the question.
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the li group had 202,000 shares of common stock outstanding at january 1, 2024. the following activities affected common shares during the year. there are no potential common shares outstanding.
The 2018 Earning per share , the 2019 Earning per share and the amount it will take the 2018 Earning per share be presented in the 2019 comparative financial statements are all shown on the attached picture.
What is Earning Per Share?Earning per share can be described as the earning available after distribution of dividend divided by the number of shares outstanding at the end of the year. This will be reported through net income.
In conclusion, The 2018 EPS - $400,000 / 400,000 = $1.00
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Complete question is :
The Li Group had 202,000 shares of common stock outstanding at January 1, 2018. The following activities affected common shares during the year. There are no potential common shares outstanding
2018
Feb .28 Purchased 6,000 shares of treasury stock.
Oct 31 Sold the treasury shares purchased on February 28
Nov 30 Issued 24,000 new shares.
Dec 31 Net income for 2018 is $400,000
2019
Jan. 15 Declared and issued a 2-for-1 stock split
Dec .31 Net income for 2019 is $400,000.
1. Determine the 2018 EPS
2. Determine the 2019 EPS
3. At what amount will the 2018 EPS be presented in the 2019 comparative financial statements?
What are 5 differences between cellular respiration and photosynthesis?.
The 5 differences between cellular respiration and photosynthesis are mentioned below.
In Cellular respiration,
Occurs in all living organismThe entire process takes place in mitochondriaIt undergoes catabolic processIt is an exergonic reaction as energy is releasedIt does not require sunlightIn Photosynthesis,
Occurs only in phototrophsThe entire process takes place in ChloroplastsIt undergoes anabolic processIt is an endothermic reaction as energy is taken inIt requires sunlightTherefore, 5 differences between cellular respiration and photosynthesis are mentioned above.
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(chapter 8) light reflecting from a surface, measured in candela per square meter (cd/m2) or foot lamberts (fl) is known as:
Light reflecting from a surface, measured in candela per square meter (cd/m2) or foot lamberts (fl) is known as Luminance.
Define Luminance?
Measurement of the amount of light that is emitted, transmitted through, or reflected from a surface at a solid angle is referred to as luminance. Additionally, it shows how much light intensity the human eye is capable of perceiving. The brightness of displays is measured in the display business using luminance.Luminance can be measured in a number of different ways. The unit of brightness in the International System of Units (SI) is candela/square meter (cd/m2) or foot lamberts (fl).
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A series lr circuit contains an emf source of 14 v having no internal resistance, a resistor, a 34 h inductor having no appreciable resistance, and a switch. If the emf across the inductor is 80% of its maximum value 4. 0 s after the switch is closed, what is the resistance of the resistor?.
Resistance of the resistor is 1.9 ohms.
Voltage across inductor after 4 sec = Ve^(-Rt/L) = 14*e^(-R*4/34)
given VL = 0.8V = 0.8*14 = 11.2 Volts
so we have
11.2 = 14*e^(-R*4/34)
or
0.8 = e^(-2R/17)
or
-2R/17 = ln(0.8)
or
R = -17ln(0.8)/2
= 1.896 ~ 1.9 ohms
1.9 ohms
Resistance is a degree of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized with the aid of the Greek letter omega (Ω).
Resistance measures how properly a material or item conducts energy. Low resistance approach the object conducts electricity well, excessive resistance method the object does not behavior electricity well.
If the temperature and other physical variables stay regular, the resistance of a conductor is exactly proportional to its duration. It manner that R ∝ l , i.e., if the duration rises, the resistance increases as properly, and if the duration reduces, the resistance lowers as properly.
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The 70 kg student in figure p14. 43 balances a 1200 kg elephant on a hydraulic lift. What is the diameter of the piston the student is standing on?.
The piston the student is standing on has a 0.22-times larger diameter than the piston the elephant stands on.
What is mechanical advantage of a hydraulic lift?Pascal's law is shown via the hydraulic system.In doing so, we are able to use a modest force on the small piston to generate a bigger force on the huge piston.At each piston, the ratio between the force and the area must be the same.The three practical tools that make use of Pascal's law are hydraulic presses, hydraulic lifts, and hydraulic brakes.Given parameters:
Mass of the student: m = 70 kg.
Mass of the elephant: M = 1200 kg.
Let the diameters of the piston the student is standing on and the piston the elephant is standing on are respectively d and D.
Using Pascal's law , we can write,
Force applied by the student's weight ÷ area of the piston the student is standing on = Force applied by the elephant's weight ÷ area of the piston the elephant is standing on.
⇒ 70 kg × g / π d² = 1200 kg × g / π D²
⇒ 1400 d² = 70 D²
⇒ d= 0.22D.
Hence, The piston the student is standing on has a diameter that is 0.22 times larger than the piston the elephant is standing on.
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in probleem 11, suppose passing truck drivers look to see how many trucks are weaiting to be weighed at hte weigh station if they see four or more terucks
If truck drivers see four or more trucks waiting to be weighed at the weigh station, they usually move on because they assume the wait time will be too long.
What is time?
In physics, the definition of time is determined by the instrument used to measure it. It is a scalar quantity in classical, non-relativistic physics and is frequently referred to as a fundamental quantity, along with length, mass, and charge. Mathematically, time and other physical quantities can be coupled to create additional ideas like motion, kinetic energy, and time-dependent fields. The basis of recordkeeping is timekeeping, a complex of scientific and technological challenges. The second is the unit of time in the International System of Units (SI). It has a definition of "the duration of 9,192,631,770 of a radiation related to the transition between two hyperfine levels of a ground state of the caesium 133 atom" and has been a SI base unit since 1967.
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what happens to the tension in the string if the ping-pong ball is replaced by a smaller spherical object of equal weight?
The tension in the string increases in the string if the ping-pong ball is replaced by a smaller spherical object of equal weight.
What is tension?
When two opposing forces pull on a rope, string, or wire, the force transmitted through the object is known as tension. The energy is pulled equally on the bodies at the ends by the tension force, which is applied along the entire length of the wire. Each physical object that comes into contact with another applies force to that object.
What is weight?
weight is the gravitational pull of a large second object, like the Moon or the Earth, on a first object.
The concepts required to solve the given question is tension in the string.
Initially, write an expression for the tension in terms of the volume, density of liquid, and the density of solid. Later, compare the tension on basis of the density of matter. Finally, compare the tension on basis of the weight of the spherical ball.
The expression for the tension in terms of the volume, density of liquid, and the density of solid is as follows:
T= v (P₁-Ps)
Here, V is the volume,
P₁ is the density of liquid, and
Ps is the density of solid.
Step: 1
The tension in the equation
T= v (P₁-Ps)
is directly proportional to the volume, density of liquid, and the density of solid. Thus, as the density of liquid increases, the tension increases. Thus, the tension in the string neither decrease nor remains same.
Explanation:
As the density of liquid increases, the tension increases. Thus, the tension in the string neither decrease nor remains same. After adding the salt to the water, the density of liquid increases.
Hint
Calculate that the tension increase using the equation
T= v (P₁-Ps)
Step: 2
Form the equation
T= v (P₁-Ps)
, it is clear that the tension increases with increase in the density of the liquid. After adding salt to water, the density of liquid increases. Hence, the tension in the string also increases.
Explanation:
The Tension will decrease as the volume displaced will decrease. Thus, the tension in the string neither decrease nor remains same. After adding the salt to the water, the density of liquid increases.
Hint:
Find whether the tension increase, decreases or does not change using the equation
T= v (P₁-Ps)
Step: 3
The weight of the spherical balls is same but the volume is decreased, Therefore, in the second terms of the equation
T= v (P₁-Ps)
, the density of the solid remains constant, but, the density of the liquid decreases. Therefore, the net tension in the string neither increases not remains same.
Explanation:
In the second terms of the equation
T= v (P₁-Ps)
, the density of the solid remains constant, but, the density of the liquid decreases.
Hint:
Find that the tension decreases using the equation
.T= v (P₁-Ps)
Step: 4
The weight of the spherical balls is same but the volume is decreased, Therefore, in the second terms of the equation
T= v (P₁-Ps)
, the density of the solid remains constant, but, the density of the liquid decreases. Therefore, the net tension decreases.
Explanation:
The density of the solid remains constant, but, the density of the liquid decreases. Therefore, the net tension decreases.
Therefore, the tension in the string increases in the string if the ping-pong ball is replaced by a smaller spherical object of equal weight.
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Objects A and Care made of different materials, with different "springiness", but they have the same mass and are bot initially at rest. When ball B collides with object A, the ball ends up at rest. When ball B collides with object C, the ball rebounds to the left. Compare the velocities of A and after the collisions. Is greater, equal to, or less than vc? Justify your answer. Before: After: BO- А VO ma = mc BOC pv
The velocity of object A after the collision is greater than the velocity of object C.
Object A and object C are made up of different materials with different springiness. Both objects have the same mass and both are initially at rest. When ball B collides with object A, ball B, and object A moves forward.
This scenario shows up an elastic collision in which after the collision one particle comes to complete rest and another particle attains the velocity of the mass that collided with it.
When the same ball B collides with object C, there will be rebounds to the left, and object C attend some velocity in the forward direction. This scenario shows an inelastic collision.
So here we can conclude that after the collision the velocity of object A is greater than the velocity of object C.
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Answer the following questions using the rules described in the presentation above to support your answer. 1) 0.0230 has how many significant figures? 2) How should you report 0.125 +1.25 = ?3) How should you report 3.2 * 2.45 = ?
The number 0.0230 has three significant figures, 0.125+1.25 will be reported as 1.375 and 3.2 x 2.45 will be reported as 7.8.
1. According to the standard rules, in the non-zero number, the numbers before the nonzero digits after the decimal are counted as significant figures.
So, 0.0230 has 3 significant figures.
2. In addition, of two decimal numbers, the final answer is always reported till the highest significant figure, hence,
0.125 + 1.25 will be reported as 1.375.
3. In multiplication of two decimal numbers, the final answer is reported till the least significant figure,
This is why, 2.45 x 3.2 s reported as 7.8.
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monochromatic light falls on two very narrow slits 0.043 mm apart. successive fringes on a screen 6.10 m away are 8.8 cm apart near the center of the pattern.
In a double-slit interference experiment, the gap y of most of order m from the middle of the observed interference sample at the display screen is y = mλD/d.
where D = 6.10 m is the space of the display screen from the slits, and d = 0.043 mm = 0.043 × 10⁻³ m is the distance between the two slits.
The fringes at the display are 8.8 m apart from each other means the primary most (m=1) is placed at y=8.8 m apart from the middle of the sample.
Therefore, from the previous components we can locate the wavelength of the light:
λ = yd/mD = (8.8m) (0.043 × 10⁻³m) / (1) (6.10m) = 62.03 × 10⁻⁷m
And from the relationship between frequency and wavelength, c = λf, we are able to find the frequency of the light:
f = c/λ = 3 × 10⁸ m per sec / 62.03 × 10⁻⁷ = 0.048× 10⁻⁷ Hz
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match each type of substituent correctly to its effect on the behavior of a carbonyl group. assume in all cases that the substituent is attached directly to the carbonyl carbon atom.
The correct match is -
EDG- stabilize a carbonyl group, decreasing its reactivity and there will be less hydrate at equilibrium
EWG- destabilize a carbonyl group, increasing its reactivity and there will be more hydrate at equilibrium
Carbonyl group is the functional group with carbon and oxygen atom attached together. EDG refers to electron donating group and EWG refers to electron withdrawing group. Electron donating groups increase the electron density thus stabilizing a carbonyl group. Increase in stability decreases the need to take or donate electrons and hence decreases the reactivity.
Electron withdrawing group decreases the density on carbonyl carbon atom, so it destabilizes the carbon atom further increasing its reactivity. Also, it is associated with less hydrate at equilibrium.
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The complete question is -
Match each type of substituent correctly to its effect on the behavior of a carbonyl group. Assume in all cases that the substituent is directly attached to the carbonyl carbon atom
EDG
WEG
There will be more hydrate at equilibrium
There will be less hydrate at equilibrium
what is the x component of final momentum of particle 1? express your answer using one significant figure.
Newton's laws state that until a force acts upon an item, it continues to move while in motion. Momentum, which is an object's compound of mass and velocity, is used to measure this "motion" value.
What exactly is momentum in daily life?Simply put, momentum is the quantity of motion. Since an item has momentum if it is moving and already has mass, quantity may be measured in this situation. An item lacks momentum if it is immobile.
What does the word "momentum" mean?Momentum may be viewed as a body's "power" while it is moving, or the amount of force it can exert on another body. For instance, a slow-moving bowling ball might have the same acceleration as a baseball being thrown fast.
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what is the average flow rate in cm3/s of gasoline to the engine of a car traveling at 116 km/h if it averages 10.7 km/l?
The Average flow rate is 2.595cm^3/s.
What is average flow rate?
The fluid flow rate is the volume of fluid per unit time that passes by a point in area A. In the shaded cylinder, the fluid passes point P in a uniform pipe over the course of time t. The cylinder's volume is Ad, its average velocity is v=d/t, and its flow rate is therefore Q=Ad/t=A v.
What is speed?
The rate at which the position of an object changes in any direction The distance traveled in relation to the time required to travel that distance is known as speed. Speed is a scalar quantity because it only has a direction and no magnitude.
The average flow rate is calculated by divide the speed (v) by mileage (z),
Average flow rate= V/Z
Here, V stands for speed and Z stands for mileage.
=100/10.7
=9.345
= 9.345(1000)/1(3600)
=2.595cm^3/s
Therefore, the Average flow rate is 2.595cm^3/s.
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you are driving along a country road when you suddenly notice a log in the road ahead of you and immediately apply your brakes. you travel a distance of s(t)
a. The car will not hit the tractor.
b. The car would travel a distance of 52.07 m before stopping
c. At the moment when the car stopped, the tractor is 11.5 m in front of the car.
Linear motion
From the question, we are to determine of you will hit the tractor before you stop
First, we will determine the time it will take the car to stop
From the given information,
Initial velocity, u = 27.0 m/s
a = -7 m/s² (Negative sign indicates deceleration)
v = 0 m/s (Since the car will come to stop)
From one of the equations of linear motion,
v = u + at
Where v is the final velocity
u is the initial velocity
a is the acceleration
and t is the time taken
Putting the parameters into the equation, we get
0 = 27 + (-7)t
7t = 27
t = 27/7
t = 3.857 secs
This is the time it will take the car to stop
Now, we will determine the distance the car would travel after applying the brakes
Using the formula
S = (u + v) / t
Where S is the distance traveled
S = [(27 + 0) / 2] * 3.857
S = 13.5 * 3.857
S = 52.0695 m
S ≅ 52.07 m
This means the car would travel 52.07 m after applying the brakes
Now, we will determine the distance the tractor would have traveled when the car came to a stop
Speed of the tractor = 10.0 m/s
Time taken for the car to stop = 3.857 secs
Using the formula,
Distance = Speed × Time
Distance = 10.0 × 3.857
Distance = 38.57 m
Now, we will determine the distance between the car and the tractor when the car finally stopped
Distance between the car and the tractor = Distance ahead + Distance traveled by the tractor after the car stopped - Distance traveled by car after applying the brakes
Distance between the car and the tractor = 25 m + 38.57 m - 52.07 m
Distance between the car and the tractor = 11.5 m
Therefore, the distance the tractor was ahead of the car + the distance the tractor traveled after the car stopped is more than the distance the car traveled after applying the brakes (25 m + 38.57 m > 52.07), the car will not hit the tractor.
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[NOTE: THIS IS AN INCOMPLETE QUESTION. THE COMPLETE QUESTION IS: You are driving your car along a country road at a speed of 27.0 m/s. as you come over the crest of a hill, you notice a farm tractor 25.0 m ahead of you on the road, moving in the same direction as you at a speed of 10.0 m/s. you immediately slam on your brakes and slow down with a constant acceleration of magnitude 7.00 m/s2 .
a.will you hit the tractor before you stop?
b.how far will you travel before you stop or collide with the tractor?
c.if you stop, how far is the tractor in front of you when you finally stop?]
write a formula for a two-dimensional vector field which has all vectors parallel to the yy-axis and all vectors on a horizontal line having the same magnitude.
The formula for a two-dimensional vector field :
F = F(x,y) = <u(x,y), v(x,y)> = u i + v j;
What is a 2D vector?A three-dimensional vector field maps (x, y, z) to (u, v, w), while a two-dimensional vector field translates each point (x, y) in R2 to a two-dimensional vector (u, v).An arrow with a starting point and an ending point can graphically depict a vector in two dimensions (R2). The magnitude of the vector is represented by the length of the arrow, and its direction is represented by the direction the arrow is pointing. the opposite, or the negative.Vector fields are frequently used to simulate various physical phenomena, such as the strength and direction of a force as it shifts from one point to another or the speed and direction of a fluid moving through space.Given data :
The formula for a two-dimensional vector field will be:
F = F(x,y) = <u(x,y), v(x,y)> = u i + v j;
Where (i,j) are unit vectors in the coordinate directions
To make all vectors parallel to the x-axis
v(x,y)=0
F(x,y) = <u(x,y),0>
To make all vectors on a horizontal line having the same magnitude.
u(x,y) = u(y)
so
F(x,y) = <u(y),0> = u(y) i
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Two wires carrying equal currents lie in the plane of the screen with currents to the right. These horizontal wires are connected to a battery with wires that are vertical and can be ignored in this problem. The length the wires is
I=1.67 m, the distance between the wires is d=1.846×10^−3 m, and the current is i=19.20 A. In this problem, only consider field due to the horizontal parts of the wires, and assume that the field due to these wires is approximately equal to that of an infinite straight wire. What is the magnitude of the force on the top wire? Give your answer in Newtons to three significant figures.
Two wires carrying equal currents lie in the plane of the screen with currents to the right. These horizontal wires are connected to a battery with wires that are vertical and the magnitude of the force on the top wire 20.8017 × 10⁻⁴ T
How is it calculated?Given is ,
μ₀ = 4π × 10 ⁻⁷
d = 1.846 × 10⁻³ m
i = 19.20 A
The magnitude field at distance d due to bottom wire is given by,
B = μ₀ i / 2πd
B = (4π × 10 ⁻⁷× 19.20) / (2 × 3.14 × 1.846 × 10⁻³)
B = (2 × 10 ⁻⁷ × 19.20) / (1.846 × 10⁻³)
B = (38.4 × 10 ⁻⁷) / (1.846 × 10⁻³)
B = 20.80173348 × 10⁻⁴
B = 20.8017 × 10⁻⁴ T
Hence , the magnitude of the force on the top wire is 20.8017 × 10⁻⁴ T
What is the magnitude of force?Force is a vector quantity, so it has magnitude and direction. A force magnitude is a number that expresses the strength of a force.Example: Suppose the force is = 10 N towards the east."East" is the direction and "10" is the strength of the force.Quantities are basically "values" or "magnitudes" of physical quantities so it is always ar scalar quantity.Can learn more about magnitude of force from
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TRUE/FALSE. to minimize cost, a multi-plant firm would never produce at a plant with an increasing marginal cost when another plant with a decreasing marginal cost is available.
A multi-plant company would never produce at a plant with an increasing marginal cost if a plant with a decreasing marginal cost was available in order to reduce costs.
Which of the following is true about marginal cost?When another facility with a lowering marginal cost is available, a multi-plant company would never manufacture at that plant in order to reduce costs.The incremental cost of one unit is known as marginal cost.Marginal cost is the extra expense involved while generating an additional unit of product.Your business should increase production levels to increase efficiency and total profit if marginal revenue exceeds marginal cost.Your company should reduce production levels to prevent a loss of profit if marginal cost exceeds marginal revenue.The marginal cost is at its lowest and the marginal product is at its highest point.
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Are solar cells and photovoltaic cells the same thing?.
Yes, solar cells and photovoltaic cells are the same, in which when light may be reflected, absorbed, or pass right through the cell.
Solar cells are gadgets that use the photovoltaic effect to transform electricity of mild without delay into energy, generating electric costs that may move freely in semiconductors. The system became observed as early as 1839, but the first sun mobile turned into added by using Bell executives in 1954.
Solar cells, additionally known as photovoltaic cells, directly rework energy into strength from the solar. Renewable power is furnished through solar cells, and they are long-lasting, compact, and occasional-maintenance.
Silicon is, by using far, the most commonplace semiconductor material utilized in solar cells, representing approximately 95% of the modules offered nowadays.
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The figure shows a 26-cm-diameter loop in three different magnetic fields. The loop's resistance is 0.21 ?
Part A In (Figure 1), what are the size and direction of the induced current? Express your answer to two significant figures and include the appropriate units.
Part B
a.) The loop current direction is cw.
b.) The loop current direction is ccw.
c.) There is no induced current.
Part C In (Figure 2), what are the size and direction of the induced current? Express your answer to two significant figures and include the appropriate units.
Part D
a.) There is no induced current.
b.) The loop current direction is cw.
c.) The loop current direction is ccw.
Part E In (Figure 3), what are the size and direction of the induced current? Express your answer to two significant figures and include the appropriate units.
Part F
a.) Out at top, in at bottom
b.) In at top, out at bottom
c.) There is no induced current
The size and direction of the induced current of a 26-cm-diameter loop are - 126.3 mA and counterclockwise.
A = π r²
A = Area
r = Radius
d = 26 cm = 0.26 m
r = d / 2
r = 0.26 / 2
r = 0.13 m
A = 3.14 * 0.13²
A = 53.066 * 10⁻³ m²
EMF = ( - ΔB / Δt ) A
EMF = Electromotive force
ΔB = Change in magnetic field
Δt = Change in time
ΔB / Δt = 0.5 T / s
EMF = - 0.5 * 53.066 * 10⁻³
EMF = - 26.53 * 10⁻³ V
I = V / R
I = - 26.53 * 10⁻³ / 0.21
I = - 126.3 * 10⁻³ A
I = - 126.3 mA
Therefore, the size and direction of the induced current are - 126.3 mA and counterclockwise.
The given question is incomplete. The complete question is:
The figure shows a 26-cm-diameter loop in three different magnetic fields. The loop's resistance is 0.21 ?
In (Figure 1), what are the size and direction of the induced current? Express your answer to two significant figures and include the appropriate units. Figure 1 is shown in the image attached.
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What are NLP engines?.
The NLP Engine is the core component that converts user input into structured inputs that the system can process and interprets at any given time.
A type of "program" called Natural Language Processing is made for computers to read, analyze, understand, and make sense of natural human languages in a useful way. It is used to decipher the meaning and purpose of text strings. In a nutshell, NLP is a method for assisting machines in comprehending human speech. some examples of NPL engines are Smart assistants, Search results, Language translation, etc.
There are two types of NLP Engines: 1) cloud NLP Engines and, 2) In-house NLP Engines.
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