A 10kg rock is pushed off the edge of a bridge 50 meters above the ground. What was the kinetic energy of the rock before it began to fall

A 155 gram sample of copper was heated to 150.0ºC then placed into 250 gram of water at 19.8ºC. (The specific heat of copper is 0.385J/gºC.) Calculate the final temperature of the mixture. (assume no heat loss to the surroundings)

A car Rounds a curve while maintaining a constant speed. Is there a net force on the car as it rounds the curve? A: it depends on the sharpness of the curve and speed of the car. B: no - it's speed is constant C: yes

An alpha particle travelling at 2155 m/s enters a magnetic field of strength 12.2 T. The particle is moving horizontally and the magnetic field is vertical. If an alpha particle contains two protons, each with a charge of 1.

Wyatt is moving a box with a mass of 37 kg a distance of 37 meters. Wyatt did 360 J of work in 2 minutes when moving the box. What was his power output? A) 9.72 W B) 3 W C) 180 W D) 323 W

1. What process forms high non-volcanic mountain ranges?

What kind of heat energy does the sun warm you with?

Can plantlife affect the flow of water in a watershed?

How much work must you do to push a 13 kg block of steel across a steel table at a steady speed of 1.0 m/s for 8.9 s? the coefficient of kinetic friction for steel on steel is 0.60?

A kid is on a stationary sled, on snowy ground with Us=0.125. It takes 71.2N of force to get the sled moving. How much normal force is acting?

Starting from rest, a 4.0-kg body reaches a speed of 8.0 m/a in 20 s. What is te net force acting on the body?