8 points
15. A spaceship is moving in a straight line on its way to a planet. The pilot
sees that the planet is ahead and to the left. She claims that she does not
need to use the engines to push the ship toward the planet. Explain why
the pilot is correct or incorrect.

In a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. what should be the radius of curvature of the cornea such that the image of an object 40.0 cm from the cornea’s vertex is focused on the retina?

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?