The speed of the block after a time t1 be greater than, less than, or equal to v1 is higher.
Initial velocity is the velocity at time interval t = 0 and it's miles represented by way of u. it's far the speed at which the motion begins. they're four initial pace formulation: (1) If time, acceleration and very last pace are supplied, the initial velocity is articulated as. u = v – at.
Calculation:-
V 1 = R/ (R/v + ut)
Since the denominator is smaller. So the Velocity becomes higher.
Speed is described as. The rate of exchange of function of an item in any course. pace is measured because the ratio of distance to the time wherein the distance was included. speed is a scalar amount as it has simplest course and no magnitude.
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light of wavelength 550 nm passes through a slit of width 0.210 mm. (a) the width of the central maximum on a screen is 7.50 mm. how far is the screen from the slit? m (b) determine the width of the first bright fringe to the side of the central maximum.
The width of the first bright fringe to the side of the central maximum is 0.0384 mm.
(a) The distance from the slit to the screen is given by the formula:
d = (b x λ) / w
where b is the width of the central maximum, λ is the wavelength, and w is the width of the slit.
Therefore,
d = (7.50 mm x 550 nm) / 0.210 mm
d = 22,500 nm / 0.210 mm
d = 107,143 mm
d = 107.1 m
(b) The width of the first bright fringe to the side of the central maximum is given by the formula:
w = (b x λ) / d
where b is the width of the central maximum, λ is the wavelength, and d is the distance from the slit to the screen.
Therefore,
w = (7.50 mm x 550 nm) / 107.1 m
w = 4,125 nm / 107.1 m
w = 0.0384 mm
The width of the first bright fringe to the side of the central maximum is 0.0384 mm
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What does the idea of multifactorial causation in drug effects suggest?
Taking several different drugs at the same time produces unpredictable effects.
Each person will have the same physiological response to a drug, but there can be different psychological responses.
Taking several different drugs at once increases their effectiveness. T
he effects of a drug depend on the dosage and the user’s personal makeup and experience.
According to the theory of multifactorial causation in drug effects, a drug's effects are influenced by dosage, the user's individual characteristics, and past experiences.
Dosage forms, sometimes also referred to as unit doses, are pharmaceutical drug products in the form in which they are marketed for use, with a particular combination of active ingredients and inactive ingredients (excipients), in a particular configuration (such as a capsule shell, for example), and apportioned into a specific dose. If two items are both amoxicillin, for instance, one comes in 500 mg capsules and the other in 250 mg chewable tablets. When each drug product is separately packaged, the term "unit dose" can also occasionally refer to non-reusable packaging), while the FDA distinguishes between the two terms as "packaging" or "dispensing" of unit doses. Depending on the situation, the term "multiple-unit dosage" might apply to various drug products packaged together or to a single drug product containing multiple pharmaceuticals.
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how much mass of u is required to produce about 8 j oof eenergy assum the energy produced in a single fission reaction is 200 mev
Using the assumption that each fission process produces 200 Mev of energy, a mass of U(235) is needed to produce approximately 8 x10¹¹ J of energy is 9.754 grams.
Explain the term single fission reaction?A bigger atom undergoes fission when a neutron smashes into it, causing it to excite then divide into two smaller atoms, also referred to as fission products. A chain reaction may be started by other neutrons that are also released. An enormous quantity of energy is produced when each atom divides.For the given single fission reaction-
Let the mass of U(235) required be m.Required energy = 8 x 10¹¹ J Produced energy = 200 Mev from one atomThus, convert energy required in Mev
8 x 10¹¹ J = 8 x 10¹¹ x 6.242 x 10¹² Mev
8 x 10¹¹ J = 49.9 x 10²³ Mev
Number of atoms required = Total energy / energy from 1 atom
Number of atoms required = 49.9 x 10²³ / 200
Number of atoms required = 0.24 x 10²³ atoms
Number of moles = 0.24 x 10²³ / NA = 0.041 mol
NA is Avogadro's number = 6.022 x 10²³
Number of moles = 0.041 mol
So, mass = 0.041 x 235
mass = 9.754 grams
Thus, using the assumption that each fission process produces 200 Mev of energy, a mass of U(235) is needed to produce approximately 8 x10¹¹ J of energy is 9.754 grams.
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The correct question is-
How much mass of U(235) is required to produce about 8 x 10¹¹ J of energy assuming the energy produced in a single fission reaction is 200 Mev.
Three identical lamps are connected in series to each other and to a voltage source. If another identical lamp is added in series connection (all four connected in series), what happens to the brightness of the first three lamps? O Increases O Decreases O Stays the same O Not enough information Which of the following will decrease the capacitance between the plates of a parallel plate capacitor filled with air? I. Decrease the charge on the plates II. Increase the potential difference between the plates III. Increase the separation between the plates IV. Decrease the area of the plates
V. Introduce a dielectric material between the plates O all of them O I, II and IV III O III and IV O III, IV, V
1. decreases
as the bulb is connected in series, the current when passing through all the bulb is increasing and the voltage is divided and decreased.
we can say that the net voltage will be divided equally between all 4 bulbs because of equal current and resistance.
2. ii) Increase the potential difference between the plates
iii) Increase the separation between the plates
capacitance is inversely proportional to the distance between the plates
capacitance is directly proportional to potential difference
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Match each part of a nephron with its function. 1 Glomerulus 2 Distal tubule Bowman's capsule frenal corpuscle) 3 Permeability controlled by hormones: can absorb additional sodium and water 5 Proximal convoluted tubule Match each of the options above to the items below. Receives filtrate from the glomerulus. Permeability controlled by hormones; can absorb additional sodium and water. 1 Increases osmolarity of medulla; absorbs water. Absorbs 80% of filtrate, including water, glucose, and amino acids Help Save & E Seved (renal corpuscle 3 controlled by hormones; can absorb additional sodium and water 5 Proximal convoluted tubule Match each of the options above to the items below. Receives filtrate from the glomerulus. Permeability controlled by hormones, can absorb additional sodium and water. Increases osmolarity of medulla; absorbs water, Absorbs 80% of filtrate, including water, glucose, and amino acids. Filtration of plasma
While large proteins and cells are kept in the blood as long as the kidney filter is functioning normally, small blood molecules freely enter Bowman's space.
What is the main function of part nephron?By keeping the vital plasma proteins from the blood and ensuring selective ultrafiltration, the kidney glomerulus maintains its function. A fenestrated endothelium, GBM, and podocytes make up its three main parts, which together make up the glomerular filtration assembly.
Therefore, A glomerular filtrate is created when fluid and solutes from the blood are removed at the glomerulus in the nephron.
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A metal sphere with a mass of 0.026 kg rolls along a friction-less surface at 3.7 m/s and strikes a stationary sphefe having a mass of 0.050 kg. The first sphere stops completely. The spheres are in contact for 0.007s before the second sphere is shot off down the track. What is the force applied to the second ball?
The force applied to the second ball by the first ball is 6.734 × 10^-4 N.
What is impulse of force?The impulse of force is defined as the sum of the average force and the duration it is applied.
If the mass of the item remains constant, the impulse of force equals the change in momentum of the object.
Given that: mass of a metal sphere: m = 0.026 kg.
Initial speed of the sphere: u = 3.7 m/s.
When the sphere stops completely, its change in momentum = mu - 0
= 0.026×3.7 N-s.
= 0.0962 N-s.
As the spheres are in contact for 0.007s before the second sphere is shot off down the track, the force applied to the second ball =
change in momentum of 1st ball × time of contact
= 0.0962 × 0.007 N
= 0.0006734 N
= 6.734 × 10^-4 N.
Hence, the force applied to the second ball is 6.734 × 10^-4 N.
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How could you use a magnet to gather evidence that magnetic fields and electric currents have a causal relationship?
Move the magnet through loops of wire
Move the magnet around a compass
Place a magnet close to a generator
Place a magnet close to a motor
Answer:
Move the magnet through loops of wire.
Explanation:
See person? that wasn't so hard its litteraly easier to put in an actual answer instead of all that spam.
One way to use a magnet to gather evidence that magnetic fields and electric currents have a causal relationship is to move the magnet through loops of wire that are present in the first option.
What is the relationship between magnetic fields and electric currents?The relationship between magnetic fields and electric currents is known as electromagnetic induction. and electromagnetic induction states that a changing magnetic field induces an electric current in a nearby conductor, and a changing electric current induces a magnetic field around the conductor, and this relationship is the foundation for the operation of many electrical devices, such as generators, motors, transformers, and induction heaters, among others.
Hence, the correct answer is to move the magnet through loops of wire that is the first option.
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g water is pumped a vertical distance of 38 m at the rate of 25 1/s. how much work is done in 2.5 min?
16775 watts or 16.7kW is the amount of work done in 2.3 minutes when the water is pumped for a distance of 38m/s.
What do you understand by work done?
The sum of the displacement and the component of the applied force of the object in the displacement direction is the work done by a force. Work is accomplished when we push a block with some force; the body moves more rapidly.
What is the distance?Distance is the sum of an object's movements, regardless of direction. The distance can be defined as the amount of space an object has covered, regardless of its starting or ending position.
Calculation:
Given,
Distance= 38m
Rate = 25mL/s = 0.25L/s
To find work done in 2.5mins Or 150seconds
Potential energy (P.E) = (mgh) /t
P.E = (mgh) /t
= (0.25 Ls-¹ * 9.81 * 38m) / 1sec
= 93.195 Watts
For 1 sec 93.195 watt is used
For 2.5mins Or 180 seconds = 93.195 × 180= 16775 watts or 16.7kW power is used for the work done.
Hence, 16775 watts or 16.7kW is the amount of work done in 2.3 minutes when the water is pumped for a distance of 38m/s.
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what features of the milky way's appearance in our sky led scientists to conclude that it is much wider than it is thick?
The Milky Way is the slender ribbon of many resolvable stars. unique aspects of the milky way's appearance in our sky prompted astronomers to infer that it is far broader than it is thick.
The Milky Way is the galaxy that contains our solar system, and the term refers to how the galaxy appears to us on Earth: as a hazy strip of light in the night sky made up of stars that are too close together to be seen individually. The title "Milky Way" comes from the Latin route lactea, which is a translation of the Greek (galaktikos kklos), which means "milky circle." From Earth, the Milky Way appears as a band because its disk-shaped structure is seen from within. In 1610, Galileo Galilei used his telescope to break the band of light into individual stars for the first time. Most astronomers believed that the Milky Way held all of the universe's stars until the early 1920s.
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A current flows through a circular coil of wire. How will the strength of the magnetic field change in the center of the coil if three turns of a radius three times smaller are made from this coil?
Answer:
bhai what is yhis? i dont understand
Which of the following is the process of making a new product to be sold by a business or enterprise to its customers? a.product analysis
b.product conceptualization
c.product development
d.product implementation
Answer: option (c)
Explanation:
Product development is also known as new product operation.
The main ideal is to satisfy the consumer demand.
There are some stages of product development process. They're idea generation, webbing, conception development and testing, request strategy, developing the new product, request testing, request commercialization.
The process of developing a product is managed by product inventor.
Product development can be done in two ways, the new product is introduced or the being products can be bettered according to the client satisfaction.
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superposition of waves can produce a) a larger wave. b) a smaller wave. c) no wave. d) all the above
The superposition of two waves can produce a smaller wave, a larger wave and no wave as well.
When any two waves travel along the same medium and they overlaps each other, there amplitude overlaps each other, this phenomena is known as superposition of two waves.
When any two waves interferes with each other they can form a wave of greater amplitude, smaller amplitude or even of equal magnitude.
Whether there will be a wave of larger or smaller amplitude it depends totally on the kind of interference taking place.
If the interference is constructive the wave amplitude it supposed to be larger but if the wave interferences destructive than the amplitude of the wave is supposed to be smaller.
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what is the magnitude, b, of the magnetic field at the center of the semicircles?
The magnitude of the magnetic field at the center of semicircles is
B= ½ [U₀I/2a-U₀I/2b) out= U₀I/4 [1/a – 1/b] out = B
The magnetic field from the circle of a wire is B = U₀I/2R
Therefore there are 2 half circles. The outer circle makes the B field into the page at the point P and the inner circle is making the field out of the page. To easily see this, the best thing to use is an RHR. Thus, subtraction is applied. The two straight wire lengths are not contributing to this field because they seem to be running into/out of P. This means that r and I are parallel, thus the cross-product in Biot-Savart calculation will got to zero.
The answer be written down (this is after discovering that there are 2 half circles):
B= ½ [U₀I/2a-U₀I/2b) out= U₀I/4 [1/a – 1/b] out = B
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a 307 g ball is tied to a string. it is pulled to an angle of 6.8 ∘ and released to swing as a pendulum. a student with a stopwatch finds that 17 oscillations take 14 s.
The string is 16 cm long.
What is time period?
Period of simple is given by the equation
[tex]$T=2 \pi \sqrt{\frac{l}{g}}$[/tex]
It will not depend upon angle and mass of ball.
A student with a stopwatch finds that 17 oscillations take 14 s.
So we can find period for 1 oscillation
[tex]\text { Period, } \mathrm{T}=\frac{14}{17}=0.82 \mathrm{~s}[/tex]
Substituting in equation of period
[tex]\begin{aligned}& T=2 \pi \sqrt{\frac{l}{g}} \\& 0.82=2 \pi \sqrt{\frac{l}{9.81}} \\& l=\frac{0.82^2 \times 9.81}{4 \pi^2}\end{aligned}[/tex]
[tex]l=0.16m[/tex]
The string is 16 cm long.
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how high (in m) a hill can a car coast up (engine disengaged) if friction is negligible and its initial speed is 108 km/h?
High (in m) a hill can a car coast up is 45.92m, if friction is negligible and its initial speed is 108 km/h
Initial velocity V = 108 Km/hr
V = 30m/s
Let mass of car m
Kinetic energy = 1/2 m[tex]v^{2}[/tex]
potential energy = mgh
by energy conservation,
h = [tex]v^{2}[/tex]/2g = 45.92m
Friction is the force preventing moving in the same direction between moving components of solid surfaces, fluid layers, and sliding materials. There are numerous types of friction:
Dry friction prevents the relative lateral motion of two in touch solid surfaces. Static friction (also known as "stiction") occurs between stationary surfaces and is further subdivided into kinetic friction (also known as "stiction") between moving surfaces. Except for atomic or molecule friction, the interaction of surface features known as asperities is the main cause of dry friction (see Figure 1).
Fluid friction can occur when layers of a viscous fluid move in close proximity to one another. Lubricated friction is the friction between two solid surfaces that is caused by a lubricating fluid.
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When amplitude increases, wavelength _____________ (increases, decreases, stays the same).
Answer: the wavelength decreases
Explanation:
As long as frequency and wave speed is consistent, wavelength remains constant.
Extreme amplitude changes can affect the wavelength by changing the wave speed. Think of waves in a string, for instance. The string is stretched when the amplitude is very high; as a result, the average tension is higher, increasing the wave speed and shortening the wavelength.
Without necessarily altering the fundamental frequency, adjusting the amplitude also adds additional frequencies.
use voltage division to find the voltage across r3, positive at the top.
V1 = (1.2 A)(2 ) = 2.4 volts is the voltage across R1.V2 = (1.2 A)(3 ) = 3.6 volts is the voltage across R2.V3 = (1.2 A)(5 ) = 6.0 volts is the voltage across R3.
How can the voltage across be determined?We can use Ohm's Law (V = I x R) to determine actual voltage drops over each resistor once we have the amperage for such circuit (remember that the amperage doesn't really change inside a series circuit).
How can I calculate the voltage drop between two resistors?According to Ohm's Law, V=I*R, where V stands for voltage, I for current, and R for resistance.The power loss across each resistor in a series circuit will be inversely correlated with its size.The voltage drop over each resistor in a parallel connection will be equal to the voltage coming from the power source.
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this is the position vs. time graph of a mass on a spring. what can you say about the velocity and the net force at the instant indicated by the dotted line?
The position versus time graph for a mass on a spring looks like this. What can you tell us about the velocity and the net force at the moment the dotted line appears. Net force is to the right and velocity is zero.
How steep will the location versus time graph and the velocity versus time graph be?
A position graph's slope is a representation of an object's velocity. As a result, the slope's value at a certain moment corresponds to the object's velocity at that moment.
What information about an object's motion is revealed by the slope of a position vs. time graph?
A position-time graph's slope is a measure of velocity. The rate of change of motion increases with slope steepness. A position-time graph can be used to determine average velocity, which is equal to the change in position divided by the corresponding change in time.
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based on this model, how much of the energy will the tertiary consumers receive if the primary consumers have 3600 joules of energy?
The tertiary consumers obtain 36 joules of energy if the primary customers use 3600 joules.
What are the 9 types of energy?Energy, radiant energy, energy source, nuclear energy, electric power, motion energy, energy, elastic energy, and gravitational energy are among the several types of energy.
Why is energy important?Modern medical technology, transportation, communications, computers, and numerous other items are all driven by energy. Particularly urgent is the need for affordable, reliable energy in rising economies. It might even save a person's life.
Briefing:Consequently, if the main consumers use 3600 joule of energy,
the tertiary customers get
=3600×10%×10% joules
= 36 joules.
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(209) Problem 3: You are constructing mobile out of 5 identical toy helicopters_ each of mass m 165 g, identical sticks (each length / = 24.1 cm, and negligible mass) and thin string negligible mass_ The distance from the left-hand side of each stick to the attachment point of the sting supporting it ae Xp through x4 respectively, as shown in the diagram. The tensions in the supporting strings are T/ through T4 as shown. You want to design the mobile s0 that it is in static equilibrium_ Otheexpertta com 13 % Part (a) Find the tension in Newtons in the string T]. 13 % Part (b) Find the tension in Newtons in the string 13% Part (c) Find the tension in Newtons in the string Tz: 13 % Part (d) Find the tension in Newtons in the string T4: 13 % Part (e) Find the distance X/, in centimeters 13 % Part (f) Find the distance Xz in centimeters _ 13 % Part (g) Find the distance Xz,in centimeters _ 13 % Part (h) Find the distance x4, in centimeters _
The distance and tension in the supporting strings are
a)X1 = 12.05 b) x2 = 16.06, T2 = 0.7644 N c) X3 = 18.01 cm , T3 = 1.0123N, d) T4 = 1274N e) X4 = 4.82 cm
The mas of toy m = 165g
sticks length l = 24.1 cm
For x1,
Both toys are balanced at same distance from middle point,
x1 = 24.1/2 = 12.05
F0r x2
we know that moment force = mgd
here mgx2 = 2mg(24.1 - x2)
x2 = 48.2 - 2x2
x2 = 16.06
Total tension = mg
m = 3 × 26
tension T2 = 0.7644 N
for x3,
x3 = 3/4 × 24.1 = 18.01 cm
T3 = 4 × 0.26 × 9.8 = 1.0123N
For X4,
x4 = 1/5 × 24.1 = 4.82 cm
T4 = 5× 0.026× 9.8 = 1274 N
Tension is defined as the pulling force transferred axially by a string, rope, chain, or other similar object, or by each end of a rod, truss member, or other similar three-dimensional object; tension may also be referred to as the action-reaction pair of forces acting at each end of those elements. Compression's opposite, tension, is possible.
When atoms or molecules are driven apart from one another and accumulate potential energy while a restoring force is still present, the restoring force may produce what is also known as tension. Each end of a string or rod that is under such stress could pull on the thing it is attached to in order to release the tension and restore the string or rod to its relaxed length.
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suppose a guitar string has a resonant frequency of 329.6 hz and a q of 632. after you pluck the string, how many periods of oscillation would it take for the energy of the vibrating string to decay by a factor of e? how many seconds will that take?
It would take 100.6 periods of oscillations for the energy of vibrating string to decay in 0.305 seconds.
Resonance is defined as a system's tendency to vibrate with increased amplitude when frequencies are excited. The maximum frequency at which the amplitude is relatively maximum is referred to as the resonance frequency or resonant frequency. The sharpness of the resonance is defined by the Q factor.
Given,
resonant frequency, f = 329.6 Hz
Quality factor , Q = 632
We know that that quality factor is equal to [tex]2\pi[/tex] .i.e [tex]Q=2\pi[/tex]
then, for 2 periods of oscillations , the energy of vibrating string to decay by factor of 'e' be
[tex]Q=2\pi n\\\\632=2\pi n\\\\n=\frac{632}{2\pi}\\\\n=100.63[/tex]
then, the time elapsed can be determined by,
[tex]f=\frac{n}{T}\\\\329.6=\frac{100.63}{T}\\\\T=\frac{100.63}{329.6}=0.305s[/tex]
Thus, the energy of a vibrating string would decay in 0.305 seconds after 100.6 oscillations.
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In a transformer, there is a primary voltage of 70V and a secondary voltage of 210V. Which statement best describes this transformer?
It’s a step-up transformer because the secondary voltage is greater than the primary voltage.
It’s a step-up transformer because the primary voltage is greater than the secondary voltage.
It’s a step-down transformer because the secondary voltage is greater than the primary voltage.
It’s a step-down transformer because the primary voltage is greater than the secondary voltage.
The transformer having a primary voltage of 70 V and a secondary voltage of 210 V is a step-up transformer (1st option)
What is a transformer?This is a device tthat transfers electrical energy either by steping-up or steping-down voltage.
Generally, there are two main types of transformer:
Step-up transformerStep-down transformerIn step-up transformer, secondary voltage is higher than the primary voltage
In step-down transformer, primary voltage is higher than the secondary voltage
With there above information in mind, we can conclude that the correct anwer to the question is:
It’s a step-up transformer because the secondary voltage is greater than the primary voltage (1st option)
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if he is listening to the radio at the frequency of 660 khz , how many wavelengths fit in the distance from the station to his house?if he is listening to the radio at the frequency of 660 , how many wavelengths fit in the distance from the station to his house?111322233
If he were to listen to the radio at a frequency of 660 kHz, the distance between the station and his dwelling could be covered by 11 wavelengths. A good illustration of a wavelength is the length of light.
"The space between the light wave's two subsequent crests or troughs." The Visible Spectrum is Simply said, the visible spectrum is the portion of an electromagnetic wave that can be observed by human eyes. The frequency of an event is its repetitions per unit of time. For clarification, it is sometimes referred to as temporal frequency and is separate from angular frequency. One event occurs every second, or one hertz (Hz), when measuring frequency.
(660*103*5*103)/3*108 is the wavelength number.
11 wavelengths are present.
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The complete question is -
if he is listening to the radio at the frequency of 660 khz , how many wavelengths fit in the distance from the station to his house?
HELP IL FAIL LIFE !!!!
The min is simply the lowest observation, while the max is the highest observation.
What is the minimum possible value of this decimal? A decimal number has two digits to the right of its decimal point. if we round it to the nearest tenth, the result is 18.6 what is the maximum possible value of this number Use words and the number line to explain your reasoning. Include the midpoint on your number lineA decimal number can be defined as a number whose whole number part and the fractional part is separated by a decimal point.The number can't be higher than 18.64 because 18.65 is the midpoint which would round up and the number only has two digits to the right of the decimal place. Use words, pictures or numbers to explain your reasoning.The minimum value is 18.55. 18.55 is the midpoint and the lowest possible number that would still round to 18.6 and only have two digits to the right of the decimal point.-3(8/9) ÷ 66.9[9 (-8.9 + 9/5) .01] is 0.06237948089
To solve this problem -3(8/9) ÷ 66.9[9 (-8.9 + 9/5) .01] we must start with
1. Solve this bracket [9 (-8.9 + 9/5) .01] at first
2. Multiply the answer of the bracket by 66.9
3. Multiply -3(8/9) and divide the answer by the product of the previous
In [9 (-8.9 + 9/5) .01]
(-8.9 + 9/5) = (-8.9 + 1.8) = -7.1
[9 (-8.9 + 9/5) .01] = [9 (-7.1).01]
9(-7.1)(.01) = -0.639
[9 (-8.9 + 9/5) .01] = -0.639
66.9 [-0.639] = -42.7491
-3(8/9) ÷ 66.9[9 (-8.9 + 9/5) .01] = ÷ -42.7491
-3(8/9) ÷ 66.9[9 (-8.9 + 9/5) .01] = 0.06237948089
The answer of -3(8/9) ÷ 66.9[9 (-8.9 + 9/5) .01] is 0.06237948089
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the point at which the weight of a submarine is exactly equal to the weight of the water displaced is called the point of
The term "point of buoyancy" refers to the precise weight balance between a submarine and the water being displaced. The buoyant force of a partially submerged body, according to the Archimedes principle.
Is the same weight as the liquid that was displaced. As a result, the buoyant force is dependent on both the body's submerged volume and the fluid's density. The force that a fluid produces on an object that is partially or entirely submerged in it in an upward direction is referred to as buoyant force. Differences in hydrostatic pressure, or the pressure that a static fluid exerts, are what cause buoyancy.
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imagine an experiment where we uniformly heat three containers, one with water, one with dry sand, one with damp sand. which one would experience the greatest increase in temperature?
Dry sand will experience the greatest increase in temperature when we uniformly heat three containers.
The reason behind is that the intermolecular force between the particles in dry sand is weakest as compared to water particles and damp sand particles. Because of weak intermolecular force, particles have certain amount of distance between each other, due to that on supplying continuous heat those particles feels the increased effect and the similar phenomenon is happened with all particles of dry sand, due to that there is a collective increase in temperature on continuously supply of heat.
Water particles and damp sand has strong intermolecular force of attraction as compared to dry sand, due to that they don't feel much experience of increased temperature.
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A rifle is aimed horizontally at a target 45 m m away. The bullet hits the target 2.1 cm below the aim point.
What was the bullet’s flight time? (assume air resistance is 0)
What was the bullet’s speed as soon as it leaves the barrel?
The bullet's flight time with zero air resistance is 0.065s and the bullet speed as soon as it leaves the barrel is 692.3m/s.
How to calculate flight time and speed?To calculate flight time of the bullet we apply the formula [tex]h = \frac{1}{2} gt^{2}[/tex]
Where h = vertical displacement of bullet in meters, 2.1cm to 0.021m
g = is a gravitational constant of 9.8
t = time of flight in seconds
To find t =
[tex]t = \sqrt{\frac{2h}{g} }[/tex]
[tex]t = \sqrt{\frac{2 * 0.021}{9.8} }[/tex] = [tex]t = \sqrt{\frac{0.042}{9.8} }[/tex]
[tex]t = \sqrt{0.004286}[/tex]
t = 0.065s
For speed of bullet:
[tex]v = \frac{s}{t}[/tex]
Where v = velocity
s = horizontal distance/range of target, 45m
t = flight time in seconds, 0.065s
[tex]v = \frac{45}{0.065}[/tex]
v = 692.3m/s
The bullet's flight time on a horizontal target at 45m from the formula [tex]h = \frac{1}{2} gt^{2}[/tex] is 0.065s and using the time of flight to divide the range, the bullet leaves the barrel at a speed of 692.3m/s
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what should you point out on a demonstration drive when depressing 2023 versa throttle three-quarters of the way to the floor
You should emphasize during a test drive that the 2021 Versa's CVT replicates shifts like an ordinary automatic transmission by depressing the accelerator approximately 75% of the way to the floor.
Explain the term demonstration drive?A test drive is indeed the act of operating a motor vehicle to evaluate its general operational condition, drivability, and roadworthiness. A test driver is a person who tests cars for a living, whether for an automaker, the automotive press for reviews, or a racing team.You should emphasize during a test drive that the 2021 Versa's CVT replicates shifts like an ordinary automatic transmission by depressing the accelerator approximately 75% of the way to the floor.
Engine noise that would usually result from continuous acceleration at high revs is reducedAnother more linear acceleration sensation is present.To know more about the demonstration drive, here
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write explanation for two dimensional motion
A two dimensional motion is a type of motion takes place in two different directions.
What is two dimensional motion?Two dimensional motion is a type of motion that occurs in two planes of a coordinate system.
In other words, this type of motion takes place in two different directions as opposed to one dimensional motion that only take place in one direction.
A two dimensional motion can occur in both x and y direction or x and z direction or y and z direction. As long the motion happens in two planes or direction it is considered two dimensional motion.
Examples of two dimensional motion include;
A particle moving along a curved path in a plane such as a coin on a carrom boardThus, a motion must occur in two different directions to be considered two dimensional motion.
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nuclear decay occurs according to first-order kinetics. how long will it take for a sample of chromium-51 to decay from 35.0 grams to 10.0 grams? the half-life of chromium-51 is 28 days.
The time taken by chromium to nuclear decay from 35 grams to 10 grams is 27.648 minutes(0.0192 days).
We have given that half life of chromium is 28 days.
We know very well that half life is the time at which half of the given material is decayed and half part remains in original form.
Half time of decaying material is given by
[tex]t_h_a_l_f[/tex] = ln2/λ
where [tex]t_h_a_l_f[/tex] is the time required to decay half material
and λ is decay constant.
=>28=ln2/λ
=>λ=ln2/28
=>λ=0.693 / 28 days
=>λ=0.024 days.
Now, we know that decay of material is given by the equation
N=N₀/ [tex]e\frac{decay}{time}[/tex]
where decay is decay constant,
N is remaining amount of material
N₀ is the initial amount
t is time
Now, we have decay constant(λ)=0.024 days, N₀=35g,N=10g
=>10=35 / [tex]e\frac{0.024}{t}[/tex]
=> [tex]e\frac{0.024}{t}[/tex] = 3.5
Taking ln on both sides of equation
=>ln([tex]e\frac{0.024}{t}[/tex]) = ln(3.5)
=>0.024 / t =1.25
=>t=0.024/1.25
=>t = 0.0192days
=>t = 0.0192×24×60=27.648minutes.
Hence, time taken by chromium is 27.648minutes(0.0192 days)
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