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A 0.450kg rock is dropped 14.0m into 3.0kg of water. If all the rock's kinetic energy is converted to thermal energy in the water, what's the water's temperature increase?
Speedy Sue, driving at 33.0 m/s, enters a one-lane tunnel. She then observes a slow-moving van 175 m ahead traveling with velocity 5.10 m/s. Sue applies her brakes but could accelerate only at -2.00 m/s2 because the road is wet. Will there be a co..
A projectile is launched from level ground. When it lands, its direction of motion has rotated clockwise by 60 degrees. What was the launch angle.
A 62kg hiker starts at an elevation of 1500m and climbs to the top of a 3500m peak, What is the minimum work required of the hiker
A 71.0kg football player is gliding across very smooth ice at 2.00m/s, What is the player's speed afterward if the ball is thrown at 18.0m/s relative to the ground
a block mass 15.92kg supported by a vertical massless cable is initially at rest. The block is then pulled upward with a constant acceleration of 2.11m/s^2. what is the net force acting on the mass
Consider three identical metal spheres, A, B, and C. Sphere A carries a charge of +10q. Sphere B carries a charge of -7q. Sphere C carries no net charge.
question1a particle is uncharged and is thrown perpendicularly upward from ground level with a speed of 23.7 ms. as a
A locomotive accelerates a 25-car train along a level track. Every car has a mass of 7.6 ? 104 kg, What is the tension in the coupling between the first car and the locomotive
Consider a small car of mass 1188 kg and a large sport utility vehicle (SUV) of mass 4360 kg. Find the speed of the small car
A diving bell has a weight of 100000 N when measured on shore. What is the buoyant force, FB, on the diving bell
You are at a rock concert, and the sound intensity reaches levels as high as 100 dB. Calculate the amplitude of this oscillating force
Force F = (-9.0 N) i + (5.0 N) j acts on a particle with position vector r = (-5.0 m) j + (1.0 m) k. What is the torque on the particle about the origin
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