Which of the following statements is true about solar eclipses?

There is a solar eclipse every month.

All solar eclipses are total.

Some solar eclipses are not total.

There can be 12 solar eclipses in a single year.

What happens to gravity when someone jumps up?

A 2-kW resistance heater in a water heater runs for 3 hours to raise the water temperature to the desired level. Determine the amount of electric energy used in both kWh and kJ.

Which of the following is not a type of galaxy? a. irregular b. spiral c. elliptical d. oval

How does the vertical component of a pro - jectile's motion compare with the motion of vertical free fall when air resistance is negligi - ble?

How fast must a 3.0 kg object be traveling to have the same momentum as a 500 kg object traveling at 2.5 m/s?

A golf ball is hit with an initial velocity of 155 ft/s at an angle of 23 degrees with the horizontal. After 1.4 seconds, how far has the golf ball traveled horizontally and vertically?. a. 199.7 feet horizontally and 75.2 feet vertically. b. 60.

What is the kinetic energy (in joules) of a. 2 kg softball thrown at a speed of 40 m/sec? (answer should be in correct units)

How is the information sent back to earth by the robots?

During which change of state do atoms lose energy? sublimation freezing boiling melting

Why does the rotation of earth require people to establish times zones?