An athlete whirls in a 7kg hammer tied to the end of a 1.3m chain in a horizontal circle. The hammer makes 1 revolution in 1sec. What is the centripetal acceleration of the hammer and what is the tension in the chain?

Which is an example of gaining a static charge by conduction? a) rubbing a balloon against your hair. b) shuffling your shoes across a carpet. c) bringing a charged rod near an electroscope. d) touching your car on a cold day and getting a shock.

Select all that applywhat are some basic resources a family is expected to provide for children? educationclothesspending

Most short-period comets do not have randomly oriented orbits because