Third class levers are best described as follows:a) The muscle force and resistive force act on opposite sides of the fulcrum, and the effort required tomove the load is at a mechanical advantageb) The muscle force and resistive force act on opposite sides of the fulcrum, but the effort required tomove the load is at a mechanical disadvantagec) The muscle force and resistive force act on the same side of the fulcrum, with a longer moment arm forthe effort than for the loadd) The muscle force and resistive force act on the same side of the fulcrum, with a longer moment arm forthe load than for the effor

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

There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?