The period of a certain wave is 20 seconds. what is the frequency of this wave? 0.05 waves/sec 10 waves/sec it depends on the medium. it depends on the speed of the wave.

Two manned satellites approaching one another at a relative speed of 0.550 m/s intend to dock. the first has a mass of 2.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. assume that the positive direction is directed from the second satellite towards the first satellite. (a) calculate the final velocity after docking, in the frame of reference in which the first satellite was originally at rest.(b) what is the loss of kinetic energy in this inelastic collision? (c) repeat both parts, in the frame of reference in which the second satellite was originally at rest. final velocity(d) loss of kinetic energy = ?

The built in flash in a compact camera is usally capable of giving correct exsposure for distance up to how many meters?

Acar of mass 800kg is moving at a speed of 2.2m/s.