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A classmate throws a 1.3-kg book from a height of 1.2 m above the ground straight up into the air. The book reaches a maximum height of 3.9 m above the ground and begins to fall back. Assume that 1.2 m above the ground is the reference level for zero gravitational potential energy.
(a) Determine the gravitational potential energy of the book when it hits the ground.
(b) Determine the velocity of the book just before hitting the ground.
0.125kg of water at 85.0 degrees is poured into an insulated cup containing 0.240kg of ice initally at 0 degrees. Calculate the mass of liquid
The pendulum is now swinging on Pluto. Calculate the new period of oscillation in terms of T, knowing that on Pluto the gravity is 1/16 of gravity on the Earth
an electron is shot directly toward the center of a large metal plate that has surface charge density -1.00 × 10-6 C/m2. how far from the plate must the launch point be
A car is driven east for a distance of 49 km, then north for 23 km, and then in a direction 28° east of north for 28 km. FIND the magnitude (in km) of the car's total displacement from its starting point
A 37.8 kg box initially at rest is pushed 5.27 m along a rough, horizontal floor with a constant applied horizontal force of 81.3836 N. Find the work done by the friction
A common flashlight bulb is rated at 0.202 A and 3.82 V (the values of current and voltage under operating conditions, estimate the temperature of the tungsten filament when the bulb is turned on
An engine does 17200 J of work and rejects 6470 J of heat into a cold reservoir whose temperature is 272 K
Consider an electron in a square infinite well whose sides have length 0.05 nm. What are the values of the lowest eight eigenvalues
A 91kg water skier floating in a lake is pulled from rest to a speed of 12 m/s in a distance of 25 m.What is the net force exerted on the skier, suppose his acceleration is constant.
A plane leaves the airport in Galisto and flies 170 km 68 degrees east of north and after that changes direction to fly 230 km at 48 degrees south of east, after that it makes an immediate emergency landing in a pasture. When airport sends out a r..
Two identical, small insulating balls are suspended by separate 0.31m threads that are attached to a commone point on the ceiling. estimate the Charge on each ball
Estimate, in vacuum wavelengths, the thickness of a vacuum layer which would permit appreciable tunneling for light incident at 42 degrees and for light incident at 4 degrees.
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