If an atom loses two electrons what charge will it have?

+1

-1

+2

-2

A radar gun can determine the speed of a moving automobile by measuring the difference in frequency between emitted and reflected radar waves.

In your second paragraph, state why erosion is a problem. Explain how erosion can harm an ecosystem and ruin the value of a natural resource.

Lilian has had enough of Tiffany's antics and high jinks and walks over to Tiffany's table. with an initial speed of 2 m/s, Lilian accelerates at a rate of 18 m/s/s for 1.5 seconds, what is her final speed?

A resistor is made by winding a very long thin metal wire, insulated so adjacent coils do not touch. At room temperature, the resistance is 100 ohms. If the resistor is then cooled to 77 K, the resistance: A. changes only slightly, if at all. B.

Think back to coulomb's law. two coins with identical charges are placed on a lab table 1.35 m apart. a. if each coin experiences a force of 2.0 n because of the presence of the other coin, calculate the charge on each coin.

Would you expect a hammer and a feather to land on the surface of the moon at the same time

Which of two factors influence the weight of an object due to gravitational pull?

What happens when a lamp plugged into an electrical outlet is turned on? A. Energy is gained. B. The form of energy changes, but the total energy remains the same. C. Energy is lost. D. The form of energy changes and the total energy increases.

How did the temperature structure of the solar nebula determine planetary composition?

The helicopter was deformed and destroyed in the __?___ collision.