Na siloměr zavěsíme pod sebe závaží s hmotnostmi 50 gramů 100 gramů, a 200 gramů. Jak velikou sílu bude ukazovat siloměr?

Avery hard rubber ball (m = 0.5 kg) is falling vertically at 4 m/s just before it bounces on the floor. the ball rebounds back at essentially the same speed. if the collision with the floor lasts 0.05 s, what is the average force exerted by the floor on the ball?

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

A4.0-cm tall light bulb is placed a distance of 32.0 cm from a concave mirror having a focal length of 16.0 cm. determine the image distance