I'm getting conflicting information on about this question. It's either fly-by or GPS satellites... What constitute the most common way that images of space are captured?

A. Fly-by missions

B. Drones landing on planets

C. GPS satellites in Earth's orbit

D. Astronauts visiting the
international space center

Find the momentum for a 2.6-kg brick parachuting straight downward at a constant speed of 8.4 m/s .

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

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen