Conduction can occur within a single substance, but parts of the substance must have which property?
a. different temperatures
b.) different textures
c.) different particle sizes
d.) different colors

Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?

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.

Aforklift raises a 1,020 n crate 3.50 m up to a shelf. how much work is done by the forklift on the crate? the forklift does j of work on the crate.