Which are true for a photon. (Choose 3)
o Energy can be calculated.
o Is the same thing as an electron.
o Is the smallest packet of light.
o Energy cannot be calculated.
o The higher the frequency, the higher the energy. o The higher the frequency, the lower the energy.

Which of the following is a homogenous mixture? o a. a toy box filled with toys o b. blood o c. trail mix o d. spaghetti and meatballs submit

An object of dimensions 50 cm x 40 cm x 0.20 cm has a mass 60g. find its density in g/cm3 and kg/ m3

Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.15 times a second. a tack is stuck in the tire at a distance of 0.373 m from the rotation axis. noting that for every rotation the tack travels one circumference (a) find the tack's tangential speed. (b) what is the tacks radial acceleration?