If a laser beam is shot straight up from the bottom of a pool so that it intersects the pools surface in a perpendicular fashion, what will the angle of refraction be in the air? A) 0

B) 45

C) 90

D) This cannot ve measured

If the direction of earth's rotation reversed, the most predictable effect would be

What is the relationship between the planets and other astronomical bodies?

If 25 mL of each of the liquids in the answer choices below were poured into a 100 mL beaker, which would form the top layer? A. sea water - density of 1.024 g/mL B. mineral oil - density of 0.910 g/mL C. distilled water - density of 1.0 g/mL D.

What causes the earths plates to move

The attraction between the Sun's gravity and Earth's gravity holds Earth in is?

Which of galileo's observations most strongly supported a heliocentric cosmology? the phases of venus?

How can scientists know for sure that the cell theory is true? What evidence do we have to prove it

Two frisky grasshoppers collide in midair at the top of their respective trajectories and grab onto each other, holding tight thereafter. One is a robust 250 g beast initially moving south at 15.

A 50 kg child runs off a dock at 2.0 ms (horizontally) and lands in a waiting rowboat of mass 150 kg. At what speed does the rowboat move away from the dock?

A force of 15 N acts upon a 3 kg block. Calculate the acceleration of the object. Question 2 options: A. 75 m/s^2 B. 5 m/s^2 C. 45 m/s^2 D. 18 m/s^2