Which of these substances is a compound?

a.) chlorine

b.) nitrogen

c.) uranium

d.) ammonia

A neutral atom may contain 8 protons

A brand of a lightbulb has a power of 55w and an efficiency of 1.6% how much power is wasted as heat by this lightbulb

Oppositely charged objects attract each other this attraction holds electrons in Adams and hold on to one another in many compounds however ernest rutherfords model of the atoms failed to explain why electrons were not pulled into the aromic nicleus

If one object has a large redshift and another object has a small redshift, what can we conclude about these two objects? a. The one with the large redshift is moving toward us faster than the one with the small redshift. b.

An object carries a charge of - 6.1 µC, while another carries a charge of - 2.0 µC. How many electrons must be transferred from the first to the second object so that both objects have the same charge?

Which physical quantities has the unit kg·m·s-1?

Can an object travel at the speed of light? Why or why not?

Determine the amount of potential energy of a 5 Newton's book that is moved to three different shelves on a bookcase. The height of the shelves is 1.0 meter, 1.5 meter, and 2.0 meter

Which atom is involved in giving your heart energy to beat? carbon gold oxygen iron

Which of the following is the most accurate statement concerning the properties of matter? a. they can be written as symbols b. they can be observed and measured c. they cannot be tested or verified d. they change with the amount of matter present