A hot air balloon is acted on by two forces. One force is its weight, equal to 2448 newtons. The second force is a buoyant force acting straight up,
equal to 2448 newtons. What change in the motion of the balloon will
result from the action of these two forces?
no change
rising
falling

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

Describe the function of the endomembrane system? what organelles are involved?

Suppose an objects initial velocity is 10m/s and it’s final velocity is 4 m/s. mass is constant. what can best be concluded about the object based in the work-energy theorem