How does temperature influence the appearance of a

star? Give an example in your response.

This force occurs when ions create attractive and repulsive forces

The minimum energy needed to eject an electron from a sodium atom is 4.41 x 10-19 j. what is the maximum wavelength of light, in nanometers, that will show a photoelectric effect with sodium?

If i go to the moon what happens to my mass and weight

Romeo threw a small bundle toward Juliet on a balcony 10.0 m above him with a velocity of 5.0 m/s. The bundle stopped rising after 1.5 seconds. How high did the bundle travel? Was that high enough for her to catch it?

Correct Number Formats Numbers may be entered in several formats - including scientific notation and numerical expressions. WebAssign uses standard scientific or "e" notation for "times 10 raised to the power.

Total these measurements. Your answer should indicate the proper accuracy. Be sure to include the units in your answer.

What is vector quantities?

How does heat flow? A. Heat flows from all objects to all other objects. B. Heat flows from a warmer object to a colder object. C. Heat does not actually flow from one object to another.

Suppose you and a friend, each a mass of 60 kg, go to the park and get on a 4.0-m-diameter merry-go-round. You stand on the outside edge of the merry-go-round, while your friend pushes you so that you rotate once every 6.0 seconds.

What percent of Earth's surface is covered by land? 25 percent 50 percent 75 percent 90 percent