You and your dog are walking along a pond. Your dog looks into the still water and is startled to see its reflection. Which phenomenon is responsible for the appearance of the dog's reflection on the water's surface?
А. diffraction of water waves
B. reflection of lightwaves
C. refraction of lightwaves
D. reflection of water waves
E. refraction of water waves

The earth remains in orbit around the sun due to the force of gravity. how does the force of gravity exerted by the sun on the earth compare to the force of gravity exerted by the earth on the sun?

Arocket starts from rest and moves upward from the surface of the earth. for the first 10.0 s of its motion, the vertical acceleration of the rocket is given by ay = 12.80 m/s32t, where the +y-direction is upward. (a) what is the height of the rocket above the surface of the earth at t = 10.0 s? b) what is the speed of the rocket when it is 325 m above the surface of the earth?

The mass of the sun is 1.99×1030kg and its distance to the earth is 1.50×1011m. what is the gravitational force of the sun on the earth?