What happens during the fall in September? The Sun is at its highest point in the sky.
The northern end of Earth’s axis is tilted toward the Sun.
The Northern Hemisphere receives minimal daylight hours.
The Sun’s rays are not as concentrated as in summer.

Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.

Ais not a mixture. colloid compound suspension solution