Explain reflection and refraction

In which of the following scenarios does object 1 do + 10 joules of work on object 2? a. Object 1 exerts a 10 newton force on object 2 in the direction of its 1 meter displacement. b.

Which of the following represents the protons on the periodic table? A family B group C atom number D atomic mass

A car's position in relation to time is plotted on the graph. What is the car's average velocity for segment C? A) - 4 m/s B) - 0.25 m/s C) 0.25 m/s D) 4 m/s

Which of the following terms best describes why a skier sliding down a hill eventually comes to a stop? A. acceleration B. inertia C. gravity D. friction

An object initially at rest experiences an acceleration of 0.281 m/s2 to the South for a time of 5.44 seconds. It then increases its acceleration to 1.43 m/s2 to the South for an additional 2.42 seconds.

How are mass and weight different? a. Mass is the space an object takes up and weight is the effect of gravity on mass. b. Mass is the amount of matter and weight is the effect of gravity on mass. c.

What were the discoveries of astronomers like Copernicus and Galileo?

A major obstacle to developing good human relations is that

4.) An apartment building is on fire and a guy is trapped on the fire escape ladder. There is a dumpster that is 6.3m away and is filled full of trash, and he is 7m above it.

Calculate the temperature of and power-per-area radiated from a blackbody if the spectral intensity density peaks at (a) gamma rays, λ = 1.50*10-14 m; (b) x rays, 1.50 nm; (c) red light, 640 nm; (d) broadcast television waves, 1.