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A moving particle encounters an external electric field that decreases its kinetic energy from 9520 eV to 7060 eV as the particle moves from position A to position B. the electric potential at A is -55.0V and the electric potential at B is +27.0V. Determine the charge of the particle. Include the algebraic sign (+ or -) with your answer.
A cart is driven by a large propeller or fan, which can accelerate or decelerate the cart. Find the acceleration of the cart
when a potential difference of 156 v is applied to the plates of a parallel-plate capacitor the plates carry a surface
Converting sunlight to electricity with solar cells has an efficiency of 15%. What is the theoretical maximum efficiency
An unpolarized laser has an average power of .6 mW. At a distance of 10 m it forms a circle with a diameter of 2 mm. Intensity = 5.23 x 10^-4. Erms= .444 v/m. what is the speed of light in the polarizer
A 5000 kg truck moving right at 20 m/s collides and sticks to a 2000 kg car moving left at 10 m/s. If momentum is conserved, then what is the velocity after the collision
a stone is shot from the edge of a cliff 125 m above ground level with an initial speed of 65 ms at an angle of 37
A small, 300 cart is moving at 1.90 on an air track when it collides with a larger, 1.00 cart at rest. After the collision, the small cart recoils at 0.890. Evaluate the speed of the large cart after the collision?
A 50 gram bullet is fired into a block of mass 4.0kg, initially at rest at the edge of a frictionless table of height 0.8m. find the speed of the system before it strikes the ground
Two parallel plates, each of area 7.00 cm^2, are seperated by 3.50 mm of water, What is the magnitude of the potential difference between the plates
Suppose the force acting on a tennis ball (mass 0.040 kg) points in the +x direction and is given by the graph of Fig. 7-30 as a function of time. a) Use a graphical method to estimate the total impulse given the ball.
You see a bolt of lightning strike the ground. Exactly 37 seconds later you hear the thunder. how far away is the lightning
A 1.50 103-kg car starts from rest and accelerates uniformly to 15.8 m/s in 13.0 s. Assume that air resistance remains constant at 400 N during this time. Find the average power developed by the engine
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