How much heat is needed to raise a 0.30 kg piece of aluminum from 30.C to 150C?
150C?

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies.

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

Chameleons catch insects with their tongues, which they can rapidly extend to great lengths. in a typical strike, the chameleon's tongue accelerates at a remarkable 220 m/s2 for 20 ms, then travels at constant speed for another 30 ms.