If element X has 78 protons, how many electrons does it have?

Discuss radio waves and gamma rays. Describe two ways that they are Alike

In what two ways can a machine be made to be more efficient?

Have a blessed day christains!

A 2.5m pendulum is pulled back at an angle of 15.0 degrees and released. it's speed at the bottom of the swing is, A) 1.29 m/s B) 1.67 m/s C) 6.88 m/s D) 7.00 m/s

In 1687, Isaac Newton published a book explaining his three laws of planetary motion and the law of gravity. The importance of these discoveries was his general theory that A. the behavior of nature is basically unpredictable. B.

If the energy stored in the fully charged battery is used to lift the battery with 100-percent efficiency, what height is attained? Assume that the acceleration due to gravity is 9.8 m/s2m/s2 and is constant with height

How does the mass of an astronaut change when she travels from earth to the moon? how does her weight change?

If an object has a mass of 20 grams and a volume of 40 cm3, what is its density in g/cm3?

Discuss how systematic and random errors influence the precision and accuracy of an experiment.

Matthew rolls a bowling ball with a speed of 2 meters/second. The ball hits the pins with 1.8 joules of kinetic energy. The mass of the bowling ball is kilograms. NextReset