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On a playground slide, a child has potential energy that decreases by 1000 J while her kinetic energy increases by only 900 J. How much energy is missing and where did it go?
A thin uniform rod (mass = 1.95 kg) swings about an axis that passes through one end of the rod, What is the length of the rod
A fuel pump sends gasoline from a car's fuel tank to the engine at a rate of 5.49 10-2 kg/s. What is the speed at which the gasoline moves through the fuel line
Determine the average speed for the trip
A cannon fires a 2-kg exploding projectile across a level field on a windless day. How far away from the cannon does the second piece land
You are pulling your younger sister along in a small wheeled cart. You weight 65.0 kg and the combined mass of your sister and the cart is 35.0 kg. What forces are applying to the ground in order to produce this acceleration
What is the apparent weight of a 75 kg astronaut.
Three resistors, 27, 49, and 79 ?, are connected in series, and a 0.51-A current passes through them. What is the potential difference across the three resistors
A chair of weight 130 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 45.0 fixed at an angle of 39.0below the horizontal and the chair slides along the floor.
A spring with a spring constant 15.0 N/m hangs from the ceiling. A 300g ball is attached to the spring and allowed to come to rest, What is the amplitude f oscillations after 2.0 minutes
An electric charge on the x-axis oscillates sinusoidally about the origin. A distant observer is located at a point on the positive z-axis. In what direction will the electric field oscillate at the observer's location
Two point charges are on the y axis. A 3.80-µC charge is located at y = 1.25 cm, and a -2.18-µC charge is located at y = -1.80 cm. Find the total electric potential at the origin
The electric field at a point in space is E? =( 600i^+ 600 j^)N/C. What is the magnitude of the proton's acceleration
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