A block having mass M M slides on a frictionless surface and collides with a block of mass 2 M , 2M, which is initially at rest. After the collision, the small block is at rest and the larger block is moving to the right with speed V / 2 . V/2. Is this collision elastic?

The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.

The plum pudding model of the atom state that ?

What are the north and south poles of a solenoid change with?