The trade winds are winds that blow toward the Equator. Which of these is the main cause of the trade winds?
A.
seasonal changes in temperature
B.
the Earth's rotation on its axis
C.
global ocean currents
D.
differences in air pressure

Apulley with a mechanical advantage of 5 will require you to pull times the amount of rope. a. 1/5 b. 5 c. 10 d. 15

One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. you see that the patch of light seems to be a circular diffraction pattern. it appears that the central maximum is about 1 cm across and you estimate that the distance from the window shade to the wall is about 3 m. what is (a) the average wavelength of sunlight? (b) the diameter of the pinhole?

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds