Gu 3. The same group of scientists mentioned in #1 wish to determine the coefficient of kinetic
friction for the same new material and asphalt. As they drag the object made of this new
material across asphalt at a constant speed of 5 m/s, the force sensor measures their pulling
force as 6 N. Determine the coefficient of kinetic friction for this new material and asphalt.

If a spring has a k value of 100 newtons per meter and it is stretched 0.50 meters, what is the restoring force of the spring?

Starting with only the balmer series light (visible light), how could we ensure that the solar panels generate a current that mark can use for his power station? a)by gradually increasing the brightness (amount) of light that we shine on it. b)by gradually increasing the frequency of the light we shine on it. c)by gradually increasing the wavelength of the light that we shine on it.

What is the most useful equation for electric power?