Using data and observations, answer the following questions. Did it seem, that the mass of each 1 cm2 of paper would have the same mass? Explain your response.
How many pieces of 1 cm2 paper would it take to reach the fifth mark on the scale? Show your rationale.
Assume each mark on the scale represented 1 g. Estimate how much a sheet of paper would mass. A sheet of paper is 28 cm by 21.7 cm.
The actual mass of a sheet of copy paper is 4.5 g. What must be the actual mass of a 1 cm2 piece of copy paper? Show your calculations.

Glass is transparent to visibile light under normal conditions; however, at extremely high intensities, glass will absorb most of the light incident upon it. this works through a process known as multiphoton absorption. in this process, several photons are absorbed at the same time. if very intense light whose photons carry 2ev of energy is shined onto a material with a band gap of 4ev, that light can be absorbed through two-photon absorption, because two photons have the right amount of energy to bridge the band gap. what is the minimum number of photons of 800-nm light that are needed to equal or exceed the band gap of fused silica glass

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

The built in flash in a compact camera is usally capable of giving correct exsposure for distance up to how many meters?