If a car with mass 750 kg is lifted to a height of 2.3 m how much gravitational potential energy is added to the car

The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.

In a good thermo flask the main cause of heat loss is

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?