Four solid balls, each with a different mass, are moving at the same speed. which ball would require the most force to stop its motion? a ball with a mass of 5 kg b ball with a mass of 10 kg c ball with a mass of 15 kg d ball with a mass of 20 kg

Which transition by an electron will release the greatest amount of energy? oa ob oc od

Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?