A 0.040kg block of of copper at 95℃ is placed in 0.105kg of water at an unknown temperature. After equilibrium is reached, the final temperature is 24℃. What is the initial temperature of the water?

The 5-kg cylinder is initially at rest when it is placed in contact with the wall b and the rotor at a. if the rotor always maintains a constant clockwise angular velocity v = 6 rad> s, determine the initial angular acceleration of the cylinder. the coefficient of kinetic friction at the contacting surfaces b and c is mk = 0.2.

How will the system respond to a temperature increase?

You can watch static electricity in action by rubbing an inflated balloon against your hair. your hair will actually stand on its end! it does this because each hair becomes charged, and they all repel one another.