A bullet with a mass of 22 grams is shot into a hanging block with a mass of 3kg. The speed of the bullet is 760 m/s and causes a vertical displacement of 0.25 m. What is the maximum velocity of the block with a bullet lodged inside?

Anne applies a force on a toy car and makes it move forward. what can be said about the forces acting on the toy car at the moment anne applies the force?

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

Can anybody me with this? ? (picture included.)