If light travels 300,000 km/s how long does light reflected from mars take to reach earth when mars is 65,000,000 km away

What does an atomic number describe? The number of nuclei The number of protons The number of neutrons The number of electrons

Explain why the feet of camels and wadding birds have the shapes that they have.

This law states that oppositely charged objects will exert an attractive force on each other while two objects that have like charges will repel each other.

1. Tariff of 1828 John C. Fremont 2. abolitionist who led the raid on Harper's Ferry John Brown 3. published The Liberator Santa Anna 4. Underground Railroad Harriet Tubman 5. died at the Alamo William Lloyd Garrison 6.

2. Which of the following is an example of consideration?

According to Newton's second law of motion acceleration or an object depends upon the ___ of the object and the ___ Acting on it. I'm confused on what the blanks are. I can't find them.

What is the concentration of H + ions at a pH = 7?

Suppose that Paul D. Trigger fires a bullet from a gun. Will the speed of the bullet leaving the muzzle will be the same as the speed of the recoiling gun? Explain.

A certain rock contains large jagged pieces of other rocks cemented by fine particles what type of rock is this explain

Could a nucleus that has one proton but no neutrons exist?