7. A bob of mass 200 gram is whirled in a horizontal circle of radius 50 cm by a string inclined at 30°. Calculate tension on the string and speed of bob.​

Most of the volume of an atom is occupied by the

Efficiency is the ratio of to for a system a)power in to power in b)power in to power out c) power out to power out d) power out to power in

A10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-kg piece of lead, which is much denser than aluminum. which one has the greater buoyant force on it? explain. b - the aluminum a) both have the same buoyant force. b) the aluminum c) the lead d) it cannot be determined without knowing their volumes.