Why isn't the atomic mass always a whole number

Work is the product of ___ _ and an object's displacement.

Suppose you were asked to demonstrate electromagnetic induction. Which of the following situations will result in an electric current? A. A magnet is moving toward a wire loop. B. A wire loop is moving away from a magnet. C.

Venus has about the same mass as Earth and is about the same distance from the Sun. Yet Venus does not support life. An important difference between Earth and Venus is that Venus lacks A) an atmosphere. B) gravity and water.

If the electronic structure of a solid substance consists of a valence band that is completely filled with electrons and there is a large energy gap to the next set of orbitals, then this substance will be a (n

A student squeezes several oranges to make a glass of orange juice. The juice contains pieces of orange pulp mixed with the juice. Explain why this drink can be considered a combination of a suspension and a solution.

The coloring of the blue morpho butterfly is protective. As the butterfly flaps its wings, the angle at which light strikes the wings changes. This causes the butterfly's color to change and makes it difficult for a predator to follow.

What lunar phase would be observed from the earth, if the moon were at a 90° angle with the earth and sun?

Unbalanced contact forces between several objects would result in A. one of the objects moving B. all of the objects moving C. at least one of the objects moving and possibly all of them moving D. none of the objects moving

A heat pump absorbs heat from the atmosphere at a rate of 30 kW. If work is being done to run this heat pump at a rate of 7.7 kW, what is the coefficient of performance (COP) of the heat pump? A) 2.9B) 22C) 0.26D) 3.9E) 4.9

How do astronomers think the sun may have begun