5) A projectile has a kinetic energy of 1566 joules. If it is traveling through the air with a velocity of 50.0 m/s, what is its mass?

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

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

In a good thermo flask the main cause of heat loss is