Find the electric field vector anywhere in the plane of a dipole. Let the charge value on one
charge be q. Let them be separated by d. Let the origin be in between them. And say they are
each on the y axis.

Please include a diagram in your answer

Find numerical examples of energy usage and thermodynamic computations of efficiency. Use the web to compare the efficiencies of several power production processes. Which are in use and which are planned?

Be sure to cite your sources. Wikipedia, while useful, is not a primary source, and you should not cite it.

To earn the maximum number of points for this discussion, you must:

Post your response of at least 150 words

the total voltage change around a circuit is always positive.

this is a false statement. why?

In the figure (Figure 1) a conducting rod of length L = 37.0 cm moves in a magnetic field B⃗ of magnitude 0.500 T directed into the plane of the figure. The rod moves with speed v = 6.00 m/s in the direction shown.

Part A

What is the potential difference between the ends of the rod?

Part C

When the charges in the rod are in equilibrium, what is the magnitude of the electric field within the rod?

Part F

What is the potential difference across the rod if it moves parallel to ab?

Part G

What is the potential difference across the rod if it moves directly out of the page?

A 1210 kg car is driving on 60 km/h on an inclined plane. The car is located on the top of the plane. The plane is 655 m long and the angle is 4.50 degrees.

a) What will the speed of the car be if there is no friction ?

b) Now the car is on 85 km/h at the bottom of the inclined plane. How much friction force works on the car its way down ?

c) If the same friction force works on the car as when it drow up the plane, what does the mechanical power need to be so the car can drive on 85 km/h ?

d) Lets assume thet the same friction force works on the car that drives in a normal driving. How much gas will the car spend on a hundred ef the heat of reaction of the gas is 38 MJ/liters and the efficiency is 21 %

Help please.

A fulcrum is placed at the 55 cm position of a 100 cm (1 meter) stick with a mass of 18 kg. a 10 kg mass is placed at 70 cm position. where must a 5 kg mass be placed so that the net torque is zero? (assume the mass of the meter stick is uniformly distributed)

You use a slingshot to launch a potato horizontally from the edge of a cliff with speed υ0. The acceleration due to gravity is g. Take the origin at the launch point. (a) How long after you launch the potato has it moved as far horizontally from the launch point as it has moved vertically? What are the coordinates of the potato at this time? (b) How long after you launch the potato is it moving in a direction exactly 45° below the horizontal? What are the coordinates of the potato at this time?

Through cunning physics trickery I have trapped a point charge Q at the center of a thin-walled hollow conductive sphere of radius R, which itself carries a net charge of -3Q.

a.    How much charge will collect on the inside surface of the hollow sphere?

b.   How much charge will collect on the outside surface of the hollow sphere?

c.    Draw a picture of this arrangement, including a depiction of any electric field lines.

d.   Graph the resulting electric field E as a function of distance from the center, r.

A spring gun fires a bullet of mass m=.04 kg horizontally at a ballistic pendulum apparatus with a mass M=.350. the bullet lodges itself into the pendulum. After collision, the center of mass of the bullet and pendulum rises by .07 meters. What is the approximate initial speed v of the bullet?

- In a cylindrical container with a base area A, there are N monatomic gas particles at temperature T which are ideal. The upper part of the container is closed with a lid which has a weight M and can moves upward and downward without friction . There is vacuum on the lid and the whole system is under gravity.
a) Calculate the balance position of the lid. When performing this calculation, you can assume that the cover is quite narrow in the vertical.

- Suppose the system is completely isolated from the outside, doubling the weight of the lid (2M).
b) Determine the new temperature T* of the gas and the new equilibrium position of the lid.
c) Calculate the change in the entropy of the gas.

Show that the equation v²=v₀² −2g(y−y₀) is dimensionally consistent. (use dimensional analysis)

A solid, homogeneous sphere with a mass of m₀, a radius of r₀ and a density of ρ₀ is placed in a container of water. Initially the sphere floats and the water level is marked on the side of the container. What happens to the water level, when the original sphere is replaced with a new sphere which has different physical parameters? Notation: r means the water level rises in the container, f means falls, s means stays the same. Combination answers like 'f or s' are possible answers in some of the cases. (So for each, pick either r, s, or f- or a combo.. thank you)

1. The new sphere has a density of ρ = ρ₀ and a mass of m < m₀.
2. The new sphere has a density of ρ = ρ₀ and a radius of r < r₀.
3. The new sphere has a mass of m = m₀ and a radius of r > r₀.

4. The new sphere has a density of ρ < ρ₀ and a radius of r = r₀.
5. The new sphere has a mass of m = m₀ and a radius of r < r₀.
6. The new sphere has a mass of m > m₀ and a radius of r = r₀.

7. The new sphere has a radius of r < r₀ and a mass of m > m₀.
8. The new sphere has a radius of r < r₀ and a density of ρ > ρ₀.
9. The new sphere has a mass of m > m₀ and a density of ρ < ρ₀.

Movers push an 80 kg trunk at 1.0 m/s when they encounter a 2.5 m long stretch of floor where the coefficient of kinetic friction is 0.30. During this stretch of floor, the movers push the trunk with a steady force of 220 N.

a. Determine the net force along the direction of motion

b. Determine the net work done on the trunk

c. Using the work-energy theorem, determine the speed of the trunk at the end of the 2.5 m stretch.

Please show your work clearly and write step by step solution including numeric substitutions and etc. To make it easier, please do this in paper and include the pictures. thanks

Two astronauts float in deep space, at rest relative to each other. Including the equipment they carry, the first astronaut has total mass 521 kg and the second astronaut has total mass 615 kg. The first astronaut throws a 656 kg box of tools at 4.66, and the second astronaut catches the box. After the throw and catch: find the speed of one astronaut relative to the other, in m/s.