How do astronomers know what conditions exist inside the Sun?

The lymphatic system produces eggs and protects the fetus.

How do fossils provide evidence that evolution has occurred?

What is the restoring force of a spring stretched 0.35 meters with a spring contact of 55 newtons?

A block weighing 15N rest on a flat surface and a horizontal force of 3N is exerted on it. Determine the frictional force on the block

Why do metals "give up" their valence electrons?

How long did the astronauts stay on the moon?

Brenda is standing on the beach; the sea is choppy. she observes that the crests of distant waves appear not only smaller, but also closer together than do the crests of waves nearer the beach. this example illustrates a depth cue known as:

If two waves in the same space interfere completely destructively, which of the following occurs? A. The amplitude decreases. B. The amplitude increases. C. The wave speed increases. D. The wave speed decreases.

An electric force exists between which pair of objects? Check all that apply. A) a neutral object and a negative object two negative objects B) a neutral object and a positive object C) two positive objects D) a negative object and a positive object

A person jogs 40 km in 32 minutes then 20 km in 22 minutes and finally 10 km in 16 minutes what is his average speed in in per minute