Joe is trying to soup up his dragster. he knows that the time needed for the car to go from 0 to 100 miles per hour varies inversely with the car's horsepower. at 200 horsepower, the car can go from 0 to 100 mph in 12 seconds. how long should the car take if he can increase the horsepower to 240 hp? .

Which of the following represents an upright image? a. -do b. +m c. -m d. +do

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

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.