Estimate the number of excess electrons on the surface of one of the 20 cm long pieces of tape, pulled from the lab bench. This should be an order of magnitude estimate and you are not expected to get an exact answer - there is none. You should be able to give a reasonable estimate. Note that a piece of half-inch-wide (1.2 cm) tape, which is 20 cm long, has a mass of about 0.262 g. Assume each piece has the same charge. Your report should explain how you did the calculation, including approximations made.

Infrared rays have a shorter wavelength than question 11 options: x-rays. ultraviolet rays. radio waves. gamma rays.

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.