A steel railroad track has a length of 23 m when the temperature is 0°C.
What is the increase in the length of the
rail on a hot day when the temperature is
34°C? The linear expansion coefficient of
steel is 11 x 10-6 (°C)-1.
Answer in units of m.

Often called simply "velocity," this is the velocity of an object at a particular moment in time.

Give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell