Why isn't the atomic mass always a whole number

The starting materials in a nuclear change have a total mass of 2.3465 * 10-27 kg. After the change, the resulting materials have a mass of 2.3148 * 10-27 kg. How much energy was released during the change?

Why might two places at the same distance from the equator have different climates

A uniform thin rod of length 0.60 m and mass 3.5 kg can rotate in a horizontal plane about a vertical axis through its center. The rod is at rest when a 3.0 g bullet traveling in the rotation plane is fired into one end of the rod.

When a projecting load extends to the rear four or more feet beyond the bed or body of a vehicle in the daytime, the extreme rear and sides of the load must be marked by four?

A student waiting at a stoplight notices that her turn signal, which has a period of 0.80 s, makes one blink exactly in sync with the turn signal of the car in front of her.

A worker stands still on a roof sloped at an angle of 35° above the horizontal. He is prevented from slipping by static frictional force of 560 N. Find the mass of the worker.

A bowling ball is far from uniform. Lightweight bowling balls are made of a relatively low-density core surrounded by a thin shell with much higher density. A 7.0 lb (3.2 kg) bowling ball has a diameter of 0.216 m; 0.196 m of this is a 1.

Argument changes meaning because of an ambiguous word or phrase. A. equivocation B. fallacy of division C. amphiboly D. fallacy of accent

Is a method used by different animal species for navigation, communication, and finding food.

Which state of matter exist in an extreme high temperature found on stars A) liquid B) gas C) solid D) plasma