Consider a book that remains at rest on an incline. Draw a free-body diagram that shows the directions of the forces acting on the book Are they opposite in direction?
a) No; the normal force acts perpendicular to the surface of the inclined plane.
b) No; the normal force acts up the incline to keep the book from sliding down.
c) Yes; the normal force always acts opposite the weight force. Otherwise, the book would fall through the inclined plane.
d) Yes; the normal force acts opposite to the weight force because the book is stationary.

If a negatively charged particle is placed at rest in an electric potential field that increases in the positive x-direction, what will the particle do? a. accelerate in the positive x-direction b. remain at rest c. accelerate in the negative x-direction

Which of the the following are examples of projectile motion of both projectile motion and two dimensional motion

Use the library or internet to research each planet. make a chart comparing the following: approximate surface temperature relative surface gravity compared to earth atmospheric gases water in any form: solid, gas, or liquid when you have completed your chart, use the information you have collected to answer the following questions: which is the hottest planet? which is the coldest planet? which planet's temperature is closest to that of earth? (note: water boils at 100°c/212°f. water freezes at 0°c/32°f) which planet has the greatest gravitational attraction? which planet has the least gravitational attraction? which planet's gravitational pull is closest to that of earth? do any of the planets have oxygen in their atmosphere? which planet's atmosphere most resembles that of earth? do any of the planets have flowing water? which planet's water resources (solid, gas, or liquid) might be close to the amount on earth? which planet most resembles earth in terms of all of the factors: temperature, gravity, atmosphere, and water? if earth became an uninhabitable planet, which planet do you think would be the next best to live on? explain your answer.