Two projectiles are fired from ground level at equal speeds but different angles. One is fired at an angle of 30° and the other at 60°. Neglecting air resistance, the projectile to hit the ground first will be the one fired at

The radial velocity of an Earth satellite is its velocity

The tangential velocity of an Earth satellite is its velocity

Connect a pair of lamps in series and current is drawn from the battery. Connect the same lamps in parallel and the current drawn is

If the temperature of a sample of water at 0°C is slightly increased, its volume

A pendulum clock at high altitudes runs

Which temperature scales have equal sized degrees?

Aluminum has a higher specific heat capacity than iron. This means that for equal masses of aluminum and iron, the metal that heats more quickly when the same amount of heat is applied is

A projectile is launched vertically upward at 50 m/s. If air resistance is negligible, its speed upon returning to its starting point is

In a mixture of hydrogen gas, oxygen gas, and nitrogen gas, the molecules with the greatest average speed are those of