Which two gases in the atmosphere are essential to life on Earth? *

Nitrogen and Helium

Oxygen and Carbon Dioxide

Neon and Argon

Hydrogen and Helium

Meter is the SI base unit for measuring length time mass volume

The density of a block of wood with a mass of 100 grams and a volume of 50 cubic centimeters is A. 2 g/cm3 B. 5,000 g/cm3 C. 500 g/cm3 D. 0.5 g/cm3

Static cling makes your clothes stick together. what causes this to happen? 1. external forces to the clothes 2. forces of nature 3. friction created by tumbling clothes 4. the nature of the material

A shell that is initially at rest explodes into two fragments, one fragment 25 times heavier than the other. If any gas from the explosion has negligible mass, then: a.

Seven seconds after a brilliant flash of lightning, thunder shakes the house. approximately how far was the lightning strike from the house?

Wick type of cloud is often taken to be a sign of fair weather

A body is a particular amount of matter. It can be a solid, liquid or gas. It can be described as existing in A. location and movement. B. size and shape. C. time and space. D. motion and force.

What is a result when the torques on each side of the fulcrum are equal? no motion rotate counterclockwise about the fulcrum rotate clockwise about the fulcrum iIt will teeter clockwise and counterclockwise about the fulcrum

Suppose a 58-turn coil lies in the plane of the page in a uniform magnetic field that is directed out of the page. The coil originally has an area of 0.175 m2. It is stretched to have no area in 0.100 s.

A yummy glazed doughnut is shown above. 1) where is the center of mass of this fantastic culinary delight? in the center of the hole. somewhere inside the solid part of the doughnut the center of mass is not defined in cases where mass is missing.