Electrical wires sometimes have a plastic coating wrapped around them. How does this make the wires safer to handle

A person is standing outdoors in the shade where the temperature is 35 °C. a) What is the radiant energy absorbed per second by his head when it is covered with hair?

Which three forms of light are invisible light? blue light infrared rays radio waves red light x-rays

Which law is described by the equation p1v1 = p2v2?

The density of water is 1.00 g/cm3. What is its density in kg/m3?

If 20 waves of water pass you in 10.0 s and the waves are 2.0 m long, how fast are they moving? 2.0 m/s 8.0 m/s 1.0 m/s 4.0 m/s

How long does it take for light from a star that is 8 light years away to reach Earth? Question 7 options: 8 earth minutes 16 earth minutes 8 earth years 16 earth years

Why does water in hot springs always remain hot? Why doesn't it's thermal energy spread out?

True or false All forces are different; each exerts a particular type of effect on a object

The Yerkes refracting telescope has a 1.00 m diameter objective lens of focal length 20.0 m. Assume it is used with an eyepiece of focal length 2.50 cm. (a) Determine the angular magnification of the planet Mars through this telescope.

A small kid sits on a bike (Anita). A bigger and stronger person (Jamy) pushing the kid so that the kid starts speeding up. (neglect friction). Mark all correct statements about the forces between them. A.