A railroad freight car with a mass of 29,000 kg is moving at 2.2 m/s when it runs into another car with a mass of 30,000 kg the second car is at rest the cars locked together what is the final velocity

Lance is rubbing two sticks together. The friction causes the kinetic energy from rubbing the two sticks to be converted into A. heat energy. B. chemical energy. C. potential energy. D. electrical energy.

1 Cal = 4.186 J, is called a. Mechanical equivalent of heat b. Equivalence between mechanical energy and internal energy c. Both a and b.

A persons amygdala is damaged, and he tends to get angry less than he used to. This suggests that the amygdala?

To calculate power, divide the amount of energy transferred by ... ?

What are the first two steps for finding the magnitude of the resultant vector

Which of the following best describes a mechanical wave? A. A periodic disturbance of a medium. B. A movement of matter. c. A transfer of energy. D. When energy is converted from one form to another.

What is a 2d game. Give a refrence.

Two exactly similar wire of steel and copper are stretched by equal force. if the total elongation is 10cm. find how much each wire is elongated given young's modules for steel = 2*10^10 N/M^2 and Young's modules for copper 2*10^10N/M^2.

Which of the following is the FINAL step in a forecasting system? A. Validate and implement the results. B. Make the forecast. C. Select the forecast model (s). D. Gather the data needed to make the forecast.

Resistors in parallel together contain less resistance than resistors in series together. Create an analogy to explain this phenomena and post it here.