Does gas have as definite or indefinite volume

When a comet comes close to the Sun, what happens to it that makes it bright and easier to see?

What is the efficient functioning of working memory increased by

Heating gas to create plasma can yield A) neutrons. B) elements. C) molecules. D) free electrons.

4 The temperature at the center of the sun is 1.55 x 10' K. Express this in degrees Fahrenheit. OA (2.33 x 106 °F 0 B (1.01 * 109°F OC (3.22 x 108, °F OD (2.79 x 107°F

If cats always land on their feet, how do they get hurt when they fall?

Ethylene (C2H4) reacts with oxygen gas to produce carbon dioxide and water. 45.0 grams of ethylene reacts, how many grams of carbon dioxide gas will be produced?

What causes ice to melt and water to boil

A block of mass 3.5 kg slides down a frictionless inclined plane of length 6.4 m that makes an angle of 30 degrees with the horizontal. if the block is released from rest at the top of the incline, what is its speed at the bottom

What is the wavelength of an earthquake wave if it has a speed of 5 km/s and a frequency of 10 Hz?

The gamma ray released by each decay carries 140kev of energy. find the total energy e released by decays in the 2 hours.