Is an unburned lump of coal kinetic energy and potential energy

If a system has 475 kcal of work done to it, and releases 5.00 * 102 kJ of heat into its surroundings, what is the change in internal energy of the system?

How many valence electrons are there in group viia elements

Examine the droppler effect illustration above. Assume the red dot is a police car with its siren on. Which direction is the police car traveling

Why does a satellite in a circular orbit travel at a constant speed? why does a satellite in a circular orbit travel at a constant speed? there is a force acting opposite to the direction of the motion of the satellite.

Girl merry go around length 2.50m angular dispalcement is 1.64rad. how far is she from the center of the marry go around?

the half-life of carbon - 14 is 5730 years. What fraction of carbon-14 would remain after 11,460 years?

An object with a mass of 10.9 kg experiences a force of 18.53 N. What is the acceleration of the object? A. 2.2 m/s2 B. 1.7 m/s2 C. 16.83 m/s2 D. 1.3 m/s2

A proton, starting from rest, accelerates through a potential difference of 1.0 kV and then moves into a magnetic field of 0.040 T at a right angle to the field. What is the radius of the proton's resulting orbit

Which of the following terms are needed to completely describe speed? Check all that apply. A. Units B. Direction C. Number D. Mass

Drivers are able to see objects ahead of them because light travels through windshields.