Nomadic invasions in the Han dynasty in China in the early third century and in the Roman Empire in the West in the fifth century were

Sogdian merchants achieved success by

In the thirteenth and fourteenth centuries the Chimú state expanded into neighboring valleys to

The Khazars’ capital became a crossroads for trade and cultural exchange, demonstrated in 861 by

Which of the following is an example of biometrics?

Claims rights or positive rights

Referring to the figure, the _____ energy of the skateboarder at point (i) is converted to _____ energy when he momentarily comes to rest at (f).  

A pendulum has 30 J of gravitational potential energy when it is released from rest. At a later time, its gravitational potential energy is 12 J. If you ignore friction, the pendulum must have _____ of kinetic energy at that instant.

A 72-kg bungee jumper plummets 54 m straight downward from a bridge. How much gravitational potential energy does she lose?

Work is one way of transferring energy to an object.