If the angle of incidence shown in the illustration is 30 degrees, the angle of reflection is

What occurred while the surface rocks of the Moon were impacted, creating a fine dust?

Which of the following nations had a command economy?

Is the force of gravity stronger on a piece of paper when it is crumpled? is the force of gravity stronger on a piece of iron than it is on a piece of wood, if they both have the same mass?

A scientist is trying to determine the identity of an element. It is highly reactive to water and forms an ionic bond with chlorine. It is also very shiny. The element is likely A. from Group 17. B. from Group 1. C. from Group 15. D. a noble gas.

East-West orbits are best for: military observation radio and television environmental studies remote sensing

What uses electricity

How do invasive species spread? identify three methods. Why do invasive species pose such a threat?

If earth somehow expanded to a larger radius, with no change in mass, how would you're weight be affected? How would it be affected if earth shrunk?

Consider a helium balloon on a string tied to the seat of your stationary car. The windows are closed, so there is no air motion within the car. The car begins to accelerate forward. Which way will the balloon lean, forward or backward

The force of gravity acts upon meteors from the rocky asteroid belt between mars and Jupiter. Where is the force of gravity most likely to pull these meteors