A piece of aluminum requires 4,000 J of energy to change
from 68°C to 110° C. How much aluminum is there?

need help

Using the given data table, calculate the acceleration of the skateboarder. you can use either form of the equation below?

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

The mini-refrigerator fire was most likely caused by what type of wiring?