A hot-air balloon is descending at a rate of 1.9 m/s when a passenger drops a camera.

If the camera is 49 m above the ground when it is dropped, how much time does it take for the camera to reach the ground?

What would be the effect on the annual march of the seasons if earth's axis were not inclined relative to the plane of the ecliptic?

Summarize the general theory of relativity.

A pitch of Middle D (first harmonic = 294 Hz) is sounded out by a vibrating guitar string. The length of the string is 70.0 cm. Calculate the speed of the standing wave in the guitar string.

Describe how you can tell how many harmonics there are.

What best explain the cirulation system within mammals

Which of these is NOT a reason why the geocentric model of the solar system was once commonly accepted as the correct model? A. The Sun and Moon appear to orbit Earth. B. Earth rotates on its axis once every 24 hours. C.

Atoms in a molecule are held together through shared

Why is it not a good idea to stick a metal fork in a plugged in toaster to remove a stuck piece of toast? In your explanation be sure to use the concepts of electrical conduction and voltage.

Two identical rocks are dropped from different heights. The higher one starts out four times as high as the lower one. How much faster is the higher one going just before they hit?

A kid on a playground swing makes 6 complete to-and-from swings each 30 seconds (a) the frequency of the swinging is? (b) the period of the swinging is?