In which situations is gravitational potential energy prensent

A magnet of mass 0.20 kg is dropped from rest and falls vertically through a 35.0 cm copper tube. Eddy currents are induced, causing the copper to warm up. The speed of the magnet as it emerges from the tube is 1.10 m/s.

A 2kg object accelerated as a net force acts on it. During the 5 seconds this force acts, the object velocity changes from 3 m/s east to 7m/s west. The initial kinetic energy of the object was 9 joules, and the final kinetic energy was 49 joules

Explain what it is meant by redshifted

Iron reacts with oxygen to produce iron oxide (rust). This reaction is represented in an equation as 4Fe + xO2 → 2Fe2O3. Identify the value of x that will balance the equation.

An Atwood machine consists of two masses, mA = 7.0 kg and mB = 8.0 kg, connected by a cord that passes over a pulley free to rotate about a fixed axis. The pulley is a solid cylinder of radius R0 = 0.40 m and mass 0.70 kg.

Is electric charge a property of just electricity or is charge a property of all atoms?

Which of the gases found in the Earth's atmosphere is an important factor for weather conditions? A) oxygen B) hydrogen C) nitrogen D) water vapor

How do repeater stations improve the quality of a broadcast?

What is the total number of atoms in the following formula? CaBr2 04

The Amazon River is in Europe. True or False