A box with a mass of 15 kg is pushed with a net force of 180 N. What magnitude of acceleration will the box experience?

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

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

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted