Provide a suitable explanation to how a sound wave is created by an object vibrating in air. Use the keywords compression and rarefaction.

An ideal spring has a spring constant (force constant) of 2500 n/m, is stretched 4.0 cm, how much elastic potential energy does it possess? (a) 3j (b) 0.00j (c) 1j (d) 2j (e) 4j

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

An electromagnet is a device in which moving electric chargers in a coil of wire create a magnet.whats one advantage of using electromagnetic in devices