Julius competes in the hammer throw event. The hammer has a mass of 7.26 kg and is 1.215 m long.
What is the centripetal force on the hammer when it has a
tangential speed of 31.95 m/s? The answer is rounded off
to the nearest whole number
0 190 N
O 840 N
0 1,400 N
O 6,100 N

Which of these is not a possible type of energy transformation? a. electrical energy into light energy b. sound energy into nuclear energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

Explain why electric current cannot exist if a current doesn't have a voltage source.

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.