Element E is in group 1A and element D is in group 6A they form an ionic compound. What is the formula for this compound
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Related Questions
Two asteroids each have mass of 1.41 x 1014 kg. The strength of the gravitation force between them is 1,030 N.
Calculate the distance between the asteroids.
Answers
The distance between the two asteroids, given that the gravitation force between them is 1030 N, is 3.59×10⁷ m
How do I determine the distance?From Newton's law of universal gravity, we understood that the force of attraction / repulsion between two objects is given as:
F = GM₁M₂ / r²
Where
F is the force of attraction / repulsionG is the gravitational constant M₁ and M₂ are the masses of the objects r is the distance apartWith the above formula, we can determine the distance between the two asteroids. This is illustrated below:
Mass of 1st asteroid (M₁) = 1.41×10¹⁴ KgMass of 2nd asteroid (M₂) = 1.41×10¹⁴ KgGravitational force (F) = 1030 NGravitational constant (G) = 6.67×10¯¹¹ Nm²/Kg²Distance between the asteroids (r) = ?F = GM₁M₂ / r²
1030 = (6.67×10¯¹¹ × 1.41×10¹⁴ × 1.41×10¹⁴) / r²
Cross multiply
1030 × r² = 6.67×10¯¹¹ × 1.41×10¹⁴ × 1.41×10¹⁴
Divide both sides by 1030
r² = (6.67×10¯¹¹ × 1.41×10¹⁴ × 1.41×10¹⁴) / 1030
Take the square root of both sides
r = √[(6.67×10¯¹¹ × 1.41×10¹⁴ × 1.41×10¹⁴) / 1030]
r = 3.59×10⁷ m
Thus, the distance between them is 3.59×10⁷ m
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If a girl is sitting on box and the girl weighs 10kg and the box weighs 50 kg, how much force will be
needed to accelerate the box 5 m/s2? If the same force is used, what will the acceleration be if the girl hops off the box?
Answers
If a girl is sitting on box and the girl weighs 10kg and the box weighs 50 kg, 30.61 N force will be needed to accelerate the box 5 m/s2
Total weight = 10 + 50 = 60 kg
weight = mg
60 = m * 9.8
m = 6.122 kg
Force = ?
acceleration = 5 [tex]m/s^{2}[/tex]
Force = mass * acceleration
= 6.122 * 5 = 30.61 N
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A wheel with rotational inertia I is mounted on a fixed, frictionless axle. The angular speed ω of the wheel is increased from zero to ωf in a time interval T.
What is the average power input to the wheel during this time interval (hint: power = work / time)?
A:[tex]\frac{I^{2}\omega_{f} }{2T^{2} }[/tex]
B: [tex]\frac{I\omega^{2}_{f} }{2T^{2} }[/tex]
C: [tex]\frac{I\omega_{f}} {2T}[/tex]
D: [tex]\frac{I\omega^{2}_{f} }{2T}[/tex]
Answers
The average power input to the wheel during this time interval is (Iω²) / (2T).
option D is the correct answer
What is average power?The average power input to the wheel during this time interval is the rate at which work is done by the wheel or the rate at which energy is expended.
Mathematically, the formula for average power is given as;
P = energy / time
Based on work - energy theorem,
work done by the wheel = change in energy of the wheel
Energy of the wheel due to the rotational torque is given as;
E = ¹/₂Iω²
where;
I is the moment of inertia of the wheelω is the angular speed of the wheelPower = E/T
power = (Iω²) / (2T)
where;
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two copper wires (in different circuits) carry the same current, but wire a has twice the radius of wire b. if the drift speed of the conducting electrons in wire a is 0.1 mm/s, what is the drift speed of the conduction electrons in wire b? assume the number density of conducting electrons is the same in both wires.
Answers
4 is the drift speed of the conduction electrons in wire b.
I = neA [tex]V_{d}[/tex]
[tex]V_{d}[/tex] = [tex]\frac{I}{neA}[/tex]
= [tex]\frac{I}{ne\pi r^{2} }[/tex]
[tex]V_{d}[/tex] [tex]\alpha[/tex] [tex]\frac{1}{r^{2} }[/tex]
r' = 2r
A' = [tex]\pi 2r^{2}[/tex]
= 4[tex]\pi r^{2}[/tex]
[tex]\frac{Vd'}{Vd}[/tex]= [tex]\frac{r^{2} }{2r^{2} }[/tex] = 1/4
[tex]V_{d}[/tex] = 4
What is drift speed?Subatomic particles like electrons move in random directions all the time. When electrons are exposed to an electric field, they move randomly but slowly drift in one direction, the direction of the applied electric field. The net speed at which these electrons drift is called the drift speed. Curvature can be defined as follows:
The average speed of charged particles (eg electrons) in a material under the influence of an electric field. the SI unit of yard speed is m/s. It is also measured in [tex]m^2[/tex]/(V.s).
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the speed of the incoming water is 30 cm/s and the cross-sectional area of the hose carrying the water is 3.0 cm2. 1) determine the time required for a 25-l container to be filled with water. (express your answer to two significant figures.)
Answers
The time required for a 25-L container to be filled with water is 277.7 min.
what is time?
Time is something that everyone is familiar with, but it is difficult to explain and comprehend. Time is defined differently in science, philosophy, religion, and the arts, but its measurement method is rather constant.
The time is measured in seconds, minutes, and hours. While the origins of these units have altered over time, they may be traced back to ancient Sumeria. The cesium atom's electrical transition defines the contemporary international unit of time, the second.
Given:
Incoming water speed (v) = 30cm/s
Hose area (A) = 2 cm²
volume of the container, V = 25 L = 25,000 cm³
The volumetric flow rate of the water is calculated as follows;
q=av
V/t=Av
T=V/Av
=25000/3x30
=25000/90
=277.7s
therefore the time required was 277.7 seconds
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please complete both question
this is urgent so please try and complete it as fast as possible
due today
Answers
Answer:
[tex]\textsf{a)} \quad x=\dfrac{25(7-\sqrt{13})}{3}=28.2870727\; \sf mm[/tex]
[tex]\textsf{b)} \quad V=379037.8082\; \sf mm^3[/tex]
Explanation:
[tex]\boxed{\begin{minipage}{5 cm}\underline{Volume of a rectangular prism}\\\\$V=w\:l\:h$\\\\where:\\ \phantom{ww}$\bullet$ $w$ is the width of the base. \\ \phantom{ww}$\bullet$ $l$ is the length of the base. \\ \phantom{ww}$\bullet$ $h$ is the height.\\\end{minipage}}[/tex]
Given:
l = 200 mmw = 150 mmThe dimensions of the rectangular prism in terms of x are:
Length = 200 - 2xWidth = 150 - 2xHeight = xSubstitute these values into the formula for volume to create an equation in terms of x:
[tex]\begin{aligned}\implies V&=(150-2x)(200-2x)x\\&=(30000-700x+4x^2)x\\&=4x^3-700x^2+30000x\end{aligned}[/tex]
To find the value of x that will give the maximum volume, differentiate the equation for volume.
[tex]\begin{aligned}\implies \dfrac{\text{d}V}{\text{d}x}&=3 \cdot 4x^{3-1}-2 \cdot 700x^{2-1}+30000x^{1-1}\\&=12x^2-1400x+30000\end{aligned}[/tex]
Set the derivative to zero and solve for x using the quadratic formula:
[tex]\implies x=\dfrac{-(-1400) \pm \sqrt{(-1400)^2-4(12)(30000)}}{2(12)}[/tex]
[tex]\implies x=\dfrac{1400 \pm \sqrt{520000}}{24}[/tex]
[tex]\implies x=\dfrac{1400 \pm \sqrt{40000 \cdot 13}}{24}[/tex]
[tex]\implies x=\dfrac{1400 \pm \sqrt{40000}\sqrt{13}}{24}[/tex]
[tex]\implies x=\dfrac{1400 \pm 200\sqrt{13}}{24}[/tex]
[tex]\implies x=\dfrac{175\pm 25\sqrt{13}}{3}[/tex]
[tex]\implies x=\dfrac{25(7\pm\sqrt{13})}{3}[/tex]
To determine which value of x will give the maximum volume, differentiate again:
[tex]\begin{aligned}\implies \dfrac{\text{d}^2V}{\text{d}x^2}&=2 \cdot12x^{2-1}-1400x^{1-1}+0\\&=24x-1400\end{aligned}[/tex]
Substitute both values of x into the second derivative:
[tex]x=\dfrac{25(7+\sqrt{13})}{3} \implies \dfrac{\text{d}^2V}{\text{d}x^2}=721.1102551 > 0\implies \sf minimum[/tex]
[tex]x=\dfrac{25(7-\sqrt{13})}{3} \implies \dfrac{\text{d}^2V}{\text{d}x^2}=-721.1102551 < 0\implies \sf maximum[/tex]
Therefore, the value of x which will give the maximum volume is:
[tex]x=\dfrac{25(7-\sqrt{13})}{3}=28.2870727\; \sf mm[/tex]
To find the maximum volume of the box, substitute the found value of x into the equation for volume:
[tex]\begin{aligned}\implies V_{\sf max}&=4\left(\dfrac{25(7-\sqrt{13})}{3}\right)^3-700 \left(\dfrac{25(7-\sqrt{13})}{3}\right)^2+30000 \left (\dfrac{25(7-\sqrt{13})}{3}\right)\\\\&=379037.8082\; \sf mm^3\end{aligned}[/tex]
The dimensions of the box with maximum possible volume will be:
Length = 143.4 mm (1 d.p.)Width = 93.4 mm (1 d.p.)Height = 28.3 mm (1 d.p.)observed voltages not being shared identify components in parallel in a series-parallel circuit. group of answer choices true false
Answers
In a parallel circuit, each component is subject to the same voltage.
Is the voltage the same in a series-parallel circuit?In a series circuit, the current flowing through each component is the same, and the voltage across the circuit equals the sum of the voltages across each component. The voltage across each component in a parallel circuit is the same, and the total current is the sum of the currents flowing through all of the components. In a series circuit, the components share the supply voltage. The voltage of the supply is equal to the sum of the voltages across components connected in series. There are two or more paths for current to travel through in a parallel circuit. Each element of the parallel circuit has the same voltage applied to it. The total amount of current coming from the source
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a space vehicle is traveling at 5800 km/h relative to the earth when the exhausted rocket motor (mass 4m) is disengaged and sent backward with a speed of 74 km/h relative to the command module (mass m). what is the speed of the command module relative to earth just after the separation?
Answers
Speed of the command module relative to earth just after the separation is 5785.2Km/h
Velocity of speed of Vehicle = 5800km/h
mass = 4m + m = 5m
relative velocity = v2 - v1 = 74 km/h
v2 = 74 + v1
using conservation of momentum,
(5800)(5m) = 4m(v1) + m(v2)
V1 = 5785.2km/h
Momentum in Newtonian physics is defined as the sum of an object's mass and velocity, or more specifically, as its linear momentum or translational momentum. As a vector quantity with both a magnitude and a direction, it has both. The momentum of an item is expressed as follows: if an object has mass (m) and velocity (v), both of which are vector quantities.
The newton-second is a unit of measurement for momentum in the International System of Units (SI), and the kilograms metre per second (kg m/s) is its SI counterpart.
A body's momentum changes at a rate equal to the net force exerted on it, according to Newton's second law of motion. However, in any inertial frame, momentum is independent of the frame of reference.
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please I'm so hurry
What is it answer this question ?
A disk rotates with rotational kinetic energy is 70J and the angular momentum is 30 kg.m2/s .what is the value moment of inertia the disk?
A) 6.4 kg.m2
C) 40 kg.m2
B) 2.3 kg.m2
D) 0.43 kg.m2
Answers
Answer:
The value moment of inertia the disk:
I = 6.4 kg·m²
Explanation:
Given:
Tk = 70 J
L = 30 kg·m² / s
_____________
I - ?
Rotational kinetic energy:
Tk = I·ω²/2
Angular velocity:
ω = √ (2·T / I)
Angular moment of a rotating body
L = I·ω = I·√ (2·T / I) = √ (2·T·I² / I ) = √ (2·T·I )
Raising to the second degree:
L² = 2·T·I
The value moment of inertia the disk:
I = L² / (2·T)
I = 30² / (2·70) ≈ 6.4 kg·m²
А) 6.4 кг·м²
looking at your spectroscope, you see several discrete, clearly defined lines. what is one possible source for this spectrum
Answers
Looking at your spectroscope, you see several discrete, clearly defined lines. The one possible source for this spectrum is fluorescent lamp.
What is fluorescent lamp?
A fluorescent lamp is a low pressure mercury lamp or discharge bulb. When the light spectrum emitting from the fluorescent bulb fall on the spectroscope, it releases several discrete lines.
In this lamp, fluorescence source is used which produces visible light when it lights up.
Moreover, a fluorescent lamp alters electrical energy into chemical energy or light more efficiently than the incandescent lamp.
Simply put, fluorescent lamps are more efficient than other lamps and are mostly used for commercial and outdoor application as they use 75% less electricity.
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what did the herschels find when they counted stars in 683 regions around the milky way? about the same number of stars in each direction. many more stars are in the direction of the constellation sagittarius than in any other direction in the milky way. the doppler shifts in stellar spectra are about half redshifted and half blueshifted. the mass-luminosity relationship for main sequence stars. that the sun is moving toward the constellation cygnus.
Answers
The sun is moving toward the constellation Cygnus, as discovered by Herschel when they counted stars in 683 regions around the Milky Way.
One of the significant discoveries made by Galileo in his Sidereus Nuncius in 1610 was that, when viewed through a telescope, some of the Milky Way resolved into a cluster of numerous stars.
The Sun is the darker star towards the image's center. Herschel has indicated its location in the image above. Herschel's research leads to the conclusion that the Sun is situated at or close to the Milky Way's center.
The Milky Way galaxy is the home of the Sun. About 100,000,000,000 stars are thought to be present in the Milky Way alone, according to astronomers.
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a solid disk of mass m and radius r undergoes an acceleration a. a second disk also with a mass m only accelerates at a/4 when the same torque is applied. what is the radius of the second disk?
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A solid disk of mass m and radius r undergoes an acceleration a The radius of the second disk is 4m.
The resistance of the body to acceleration (change of velocity) in the presence of a net force is also measured. The gravitational pull of an object to other bodies is also influenced by its mass.
The kilogramme serves as the mass basis unit in the SI (kg). In physics, mass is not the same as weight, despite the fact that weight is frequently measured using a spring scale as opposed to a balance scale and direct comparison with known masses to calculate mass. The lower gravity on the Moon causes an object to weigh less than it does on Earth, but it still has the same mass. Given that mass is a property of space rather than a force.
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How does the kinetic theory explain the following? (a) A gas exerts a pressure on its container walls. (3marks)
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What is the acceleration of an object with mass of 42.6 kg when an unbalanced force of 112 N is applied to it?
Responses
A 4771.2 m/s24771.2 m/s 2
B 2.63 m/s22.63 m/s 2
C 0.3800 m/s20.3800 m/s 2
D 69.4 m/s2
Answers
The acceleration of an object with mass of 42.6kg when an unbalanced force of 112 N is applied to it is 2.63m/s² (option B).
How to calculate acceleration?Acceleration in physics is the amount by which a speed or velocity increases (and so a scalar quantity or a vector quantity).
The acceleration of a moving body can be calculated by dividing the force applied to move the object by its mass as follows:
a = F/m
According to this question, an object with mass of 42.6kg was moved by an unbalanced force of 112 N. The acceleration required can be calculated as follows;
a = 112N ÷ 42.6kg
a = 2.63m/s²
Therefore, 2.63m/s² is the acceleration of the object.
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the current on a solenoid is 3 a, the radius of the windings are 2 m , length of the solenoid is 10m , number of windings is 100. calculate the self inductance of this solenoid.
Answers
The self inductance of a solenoid is 157.9 * [tex]10^{-4}[/tex] H
Self inductance is defined as the property of a current-carrying coil that resists or prevents the current passing through it from changing.
• It is represented by L
• The unit for the self inductance is Henry denoted by H.
• Mathematically, it is L = ц[tex]N^{2}[/tex]A / l
where
ц is the vacuum permeability = 4π * [tex]10^{-7}[/tex]
N is the number of turns of the solenoid = 100
A is the area of one loop of the solenoid = π [tex]r^{2}[/tex]
( r = 2m )
A = π [tex]r^{2}[/tex] = 4π
l is its length
So the self inductance of the solenoid will be
L = 4π * [tex]10^{-4}[/tex] * 100*100 * 4π / (10)
L = 16π² * [tex]10^{-4}[/tex] H
L = 157.9 * [tex]10^{-4}[/tex] H
The self inductance of this solenoid is 157.9 * [tex]10^{-4}[/tex] H
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Emry weighed her empty backpack with a spring scale. She found that the pack weighed 8.1 N. Suppose she picks up her backpack from a desktop and lifts it through a height of 42 cm. How much gravitational potential energy does the backpack gain? (show the steps you followed to solve the problem - ie. the formula, calculations, and final answer) ROUND YOUR ANSWER TO 1 DECIMAL PLACE.
Answers
The gravitational potential energy is equal to 8.1 Newton times 0.42 meters is 3.402 joules.
What is meant by gravitation potential energy?Gravitational potential energy refers to the energy that an object has or obtains when its position changes as just a result of being surrounded by a gravitational field. An energy that is linked to gravitation or the gravitational field is known as gravitational potential energy.
Briefing:The energy that any object stores as a result of its position is known as gravitational potential energy.
The gravitational Potential energy is = mgh
Where m= mass
g = gravitational acceleration
h= height
The height of bag uplift = 42cm =0.42 meters
Now we have the weight which is 8.1 N
Weight in Newton = mass × gravitational acceleration
So if we have weight, Potential energy is = w×h
Therefore, after 42 cm of uplift, the gravitational potential energy is equal to 8.1 Newton times 0.42 meters, or 3.402 joules.
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A science class is observing how heat flows from one
object to another by melting ice and boiling water.
Which statements correctly describe how heat flows?
Choose the two statements that apply.
The coolness of the ice is flowing into the warm
water and decreasing its temperature.
The coolness of the water is flowing to the burner
and cooling it.
The warmth from the water is flowing to the ice
and melting it.
The warmth from the burner is flowing to the cold
water and increasing its temperature.
Answers
The warmth from the water is flowing to the ice and melting it and The warmth from the burner is flowing to the cold water and increasing its temperature.
What is the flow of heat called?Convection, which is essentially the mass transfer of heat, is the process by which heat is moved from one place to another by the movement of fluids. The transport of heat into the atmosphere involves one of three processes: radiation, conduction, or convection.
What happens during heat flow?Heat flow occurs when a hot object transmits its heat through a conductors to a cooler, similar to how high-energy objects impart their power to low-energy objects. How well a conductor transfers heat will impact how quickly and how much heat is transported.
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a conductor having no covering or electrical insulation whatsoever is defined in the nec as a(n) ? conductor
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A conductor having no covering or electrical insulation There is absolutely no electrical insulation or coating on a conductor is bare.
Any object used as insulation in a building for thermal management is known as building insulation. The term refers to acoustic, fire, and impact insulation in addition to the majority of insulation used in buildings, which is for thermal purposes. Because it can accomplish several of these tasks at once, insulating materials are frequently used.
Building insulation is a crucial investment in both the economy and the environment. Insulation reduces the energy needed to heat and cool a building, as well as the thermal turbulence that its occupants experience. Adding more insulation to existing structures is a key strategy for reducing greenhouse gas emissions, particularly in regions where energy production is carbon-intensive.
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the apple is then moved to a deeper point in the water. compared with the force needed to hold the apple just below the surface, what is the force needed to hold it at the deeper point?
Answers
Both depths will take the same amount of force to hold the apple underwater.
Explain about the force?Both depths will take the same amount of force to hold the apple underwater. Although the pressure on the top of the apple will also increase as the depth does, the pressure on the bottom of the apple will be greater. No of the depth, the net difference will remain the same. The force will therefore remain constant.
Science has a precise definition for the word "force." A force of this magnitude can be described as either a push or a pull. A force is not something that an object "has in it" or "contains." A force from another object can affect something else. The idea of a force does not distinguish between living and non-living things.
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if you use a horizontal force of 30 n to slide a 12 kg wooden crate across a floos at a constant velocity, what is the coefficient of kinetic friction betweem the crate and the floor?
Answers
To use the kinetic friction force formula.
What is kinetic coefficient friction?
The proportion of contacting surfaces' kinetic friction forces to normal forces is known as the coefficient of kinetic friction.
What is acceleration?
Any process that causes a change in velocity is referred to as an acceleration. Since velocity depends on both speed and direction, you can only accelerate by changing either one or both.
Fn = 12kg* 9.81 m/s^2 = 117.7 N
since there is no acceleration, friction must equal the horizontal force
30N = 117.7*μ
μ = .255
Therefore, the coefficient of kinetic friction between the crate and the floor is 255.
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what is the improvement in the frequency response of the modified equalizer and what benefits does that bring to the system?
Answers
An equalizer is used to adjust or correct the audio signal by boosting or lowering sound frequency. It will affect the sound output for the listener with an altered audio color. In other words, it is used to balance sound in the system.
Audio equalization itself is a process of balancing (boosting or lowering) the sound frequency to make better audio output. For example, tweaking the treble frequency will make the vocal audible, boosting the bass will make the sound heavier, and so many more to tune the sound to your audio taste. In addition, an equalizer can also be used as noise reduction.
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a cylinder and a hoop have the same mass and radius. they are released at the same time and roll down a ramp without slipping. 1)which one reaches the bottom first?
Answers
The cylinder will reach the bottom first.
How to Calculating the acceleration?In this case, the body acceleration should be applied to the incline.
Therefore, the equation listed below should be utilized.
gsin / (1 + k2 / r2) = a
Here
K is the gyrating radius.
r is the radius, and
Now
in hoop
k = r
gsin / (1 + r2 / r2) equals a.
= g / 2 x sinθ
0.5 gsinθ
as cylinder
k² = r² /2
A is equal to gsin / (1 + r2 /2 r2).
= 2 / 3 g sinθ
= .67 g sinθ
We can observe that the cylinder is more responsible for the acceleration.
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A light, inextensible cord passes over a light,
frictionless pulley with a radius of 14 cm. It
has a(n) 14 kg mass on the left and a(n)
8.6 kg mass on the right, both hanging freely.
Initially their center of masses are a vertical
distance 1.9 m apart.
The acceleration of gravity is 9.8 m/s².
Answers
A light, inextensible cord passes over a light, frictionless pulley with a radius of 8.9 cm. It has a 19 kg mass on the left and a 2.6 kg mass on the right, both hanging freely. The rate at which the two masses are accelerating when they pass each other is 7.44 m/s². The tension in the cord is 44.84 N.
What is tension of wire ?
In physics, tension is the force exerted on one or more bodies by ropes, cords, cables, or similar bodies. Anything that is pulled, hung, supported, or swung by a rope, cord, cable, etc., is subject to tension. Like all forces, stress can accelerate or deform objects.
Using Newton's Law to the mass m₁
m₁ g - T = m₁ a
where;
the tension T = m₁ (g -a) ----- Let this be equation (1)
For mass m₂,
T - m₂ g = m₂ a ------- Let this be equation (2)
equation both equation (1) and (2) together;
By rearrangement and collecting like terms;
a(m₂ + m₁) = g(m₁ - m₂)
Making acceleration (a) the subject of the formula:
a = 7.44 m/s²
According to equation (1), the cord's tension is:
Tension (T) = m1 (g -a)
T = 19(9.8 - 7.44) (9.8 - 7.44)
T = 19(2.36) (2.36)
T = 44.84 N
From this we can conclude that the speed at which the two masses accelerate as they pass each other is 7.44 m/s² and the tension in the cord as they pass is 44.84 N.
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On a cold, winter day, sheena rubs her hands together. Some of the energy is also transformed into which form of energy?.
Answers
the magnitude of kf depends on the identity of the [ select ] and the magnitude of kb depends on the identity of the
Answers
magnitude of kf and the magnitude of kb depends upon the identity of solvent
what is kf and kb?Kf is the depression in freezing point produced by 1 molal solution of a nonvolatile solute while Kb is the elevation in boiling point produced by 1 molal solution of a nonvolatile solute.
Boiling point elevation is the difference in temperature between the boiling point of the pure solvent and that of the solution.
Molality is defined as the total number of moles of solute per kilograms of solvent present in the solution.
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Refrigerant-134a is expanded adiabatically from 100 psia and 100°f to a pressure of 10 psia. Determine the entropy generation for this process, in btu/lbm·r.
Answers
To know adiabatically process to calculate the entropy generation.
What is entropy?
Entropy is the amount of thermal energy per temperature unit in a system that cannot be used to carry out practical work. Entropy also functions as a stand-in for a system's molecular disorder or unpredictability because work is generated by ordered molecular motion.
What is an adiabatic process?
The thermodynamic process in which neither the system's expansion nor its compression causes heat to be transferred to its surroundings.
R- 134 a
at p₁= 100 psia, T₁= 100°f and p₂= 10 psia
using steam table A-13E
at p= 100psia, at T= 100°f
H₁= 118.90 btu/lbm s₁= 0.229 btu/lbm-°r
at it expanded adiabatically, therefore entropy will be constant
∴ h₁= h₂= 118.9 btu/lbm
∴ at p₂= 10 psia
using steam table A-13E
at p= 10 psia
T°f h(btu/lbm) s(btu/lbm-°r)
60 115.67 0.26531
80 119.68 0.27288
as we can see the h₂ is lie between 60°f and 80°f
by interpolation, we can find s₂
115.67-h₂/115.67-119.68=0.26531-s₂/0.26531-0.27288
115.67-118.9/115.67-118.9=0.26531-s₂/0.26531-0.27288
S₂= o.27288(btu/lbm-°R)
Entropy generation
Δs= s₂-s₁
=0.27288-0.229
Δs= 0.04388(btu/lbm-°R)
Therefore, the entropy generation is 0.04388(btu/lbm-°R)
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Special effects experts want the largest explosion that is safe for the people on set. Knowing that the energy of a wave is proportional to its amplitude squared helps them mathematically model the energy of the explosion and the amplitude of the blast wave. How does this knowledge help them determine where to place the actors and crew?
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Suggest why the designer of a car simulator needs to study physics
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The designer of a car simulator needs to study physics because their simulator must obey all the laws of physics. For instance, we can investigate if a car will flip if it drives on a circular track with a specific radius. Physics is also important in determining the cause of many vehicle accidents. As a result, physics is essential in the study of automotive motion.
What is a Car Simulator?
Driving simulators, like flight simulators, immerse the driver in an artificial environment that is thought to be a legitimate alternative for one or more components of the actual driving experience. Driving simulators, on the other hand, support much more than driver instruction, in contrast to flight simulators, which were designed primarily for pilot training.
A driving simulator can alleviate these fears by illustrating what occurs when a motorist exceeds the speed limit and how this affects their response time. There is no way to educate kids this similar circumstances on the road without endangering everyone.
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a 0.145- kg baseball with an initial speed of 28 m/s rebounds with a speed of 33 m/s after being struck with a bat. if the duration of contact between ball and bat was 1.7 ms, what was the magnitude of the average force between ball and bat?
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Linear momentum is a vector quantity defined as p=mv
where m is the body mass and v
its vector velocity. A body may undergo changes in linear momentum. Suppose a particle changes its initial momentum from pi to a final momentum pf, during a time Δt. We have
ΔpΔt=mvf−mviΔt=mΔvΔt
=m⟨a⟩
where ⟨a⟩=ΔvΔt
is an average acceleration, and we can identify the result above as the average force acting on the particle during the change in momentum:
⟨F⟩=ΔpΔt
Answer and Explanation:
A baseball has mass
m=0.145kg. Consider the x-axis defined in the figure below. We can write the ball's initial...
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Linear momentum is a vector quantity defined as p=mv.
What is magnitude of the average force?Units of mass times length over time squared are used to express the strength of a force. The most used unit in metric measurements is the newton (N), which is equal to one kilogram times one meter over one second squared.
its vector speed. Linear momentum can alter for a body. Let's say a particle undergoes a time-dependent shift in momentum from pi to pf. To date,
ΔpΔt=mvf−mviΔt=mΔvΔt
=m⟨a⟩
where where a=vt
is a typical acceleration, and the outcome shown above can be interpreted as the typical force exerted on the particle during the change in momentum:
⟨F⟩=ΔpΔt
A baseball has mass m=0.145kg. Consider the x-axis defined in the figure below. We can write the ball's initial.
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AP physics 1: Extra points!!
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Tension force, Friction and gravity are acting on acrobat player while hanging in middle.
Tension is a contact force that is transmitted via a rope, thread, wire, or other similar material when pressures on the opposing ends are pulling on it. For example, the rope holding a tire swing to a tree limb is strained. The rope is pulled upward by a branch that is fighting the rope's tug tension, which is merely a pulling force, while the rope is pulled downward by gravity. Pushing on a loose rope creates no strain. As a result, the force of tension must always be represented in the direction that the string is pulling the object in a free-body diagram.
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