A95.00 kg man on ice skates catches a moving ball at 18 m/s. the man is initially at rest. the man and ball move together after the collision. the ball's mass is 0.14 kg. what is the final velocity?

Asample of a gaseous substance changes into a liquid

What type of nuclear decay causes the atomic number of an element to increase by 1?

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