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A block of mass 1.80 kg is pushed 2.90 m along a frictionless horizontal table by a constant 16.0 N force directed 27.0° below the horizontal. (a) Determine the work done on the block by the applied force. _______J (b) Determine the work done on the block by the normal force exerted by the table. _______J (c) Determine the work done on the block by the gravitational force. _______J (d) Determine the total work done on the block. ________J
A short time later, all of the charge has left the capacitor and the current flowing through the inductor has reached its maximum value. What is this current
in a typical Van de Graaff linear accelerator, protons are accelerated through a potential difference of 20 MV. What is their kinetic energy if they started from rest
A Styrofoam box has a surface area of 0.83 m2 and a wall thickness of 2.0 cm. The temperature of the inner surface is 5.0°C, determine the thermal conductivity of the Styrofoam.
When people exercise they shed heat to the environment by sweating and radiating, calculate the rise in body temperature after one hour
Moving to the right is postive. A 9.1 g object moving to the right at 17 cm/s makes an elastic head on collision with a 20 g object moving in the opposite direction at 19 cm/s. Find the velocity of the second object after the collision
A dedicated sports car enthusiast polishes the inside and outside surfaces of a hubcap that is a thin section of a sphere. How far is her face from the hubcap
What is the minimum amount of electrical energy required by the refrigerator to carry out this process if it operates between reservoirs at temperatures of 20.0 °C and –20.0 °C?
A "75 Watt" light bulb uses an average power of 75 W when connected to an rms voltage of 120V. what is the maximum current in the light bulb
question1a dock worker loading crates on a ship finds that a 22 kg crate at first at rest on a horizontal surface
How many kilometers per liter will a car obtain if its engine is 25 percent efficient and it encounters and average force of 1000 Newtons? Suppose the energy content of gasoline is 40,000,000 joules per liter (J/L).
A 300-g block is dropped onto a vertical spring with spring constant k =180.0 N/m. find the speed of the block just before it hits the spring
Professional baseball pitchers can deliver a pitch which can reach the blazing speed of 100 mph (miles per hour). how much kinetic energy does the ball have
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