What is the number at end of an isotopes name

What does the doppler effect tell astronomers about the universe

Which statement best compares these two waves

Alligators and other reptiles don't use enough metabolic energy to keep their body temperatures constant. They cool off at night and must warm up in the sun in the morning.

Which earthquake scale is based mostly on human opinion and perception of recent events? richter scale moment magnitude scale modified mercalli scale fujita scale saffir-simpson scale?

Dina has a mass of 50 kilograms and is waiting at the top of a ski slope that's 5.0 meters high. The maximum velocity she can reach when she skis to the bottom of the slope is meters/second. Use PE = m * g * h, g = 9.8 m/s2, and.

Why are glass fibers stronger than bulk glass?

1. A 2000kg truck at rest accelerates to 45m/s in 7 seconds. What is its change in kinetic energy?

The speed with which force is developed by skeletal muscles is determined by the

What aviation first is paul maccready credited with

Why is the use of an international system of measurement important for science?