Is the center of each galaxy a black hole containing new galaxy?

Suppose a cyclist travels 15 kilometers during the first hour. Then the cyclist travels 33 kilometers during the next 2 hours. What is the cyclist's average speed?

If the ball increases from 1 m/s to 2 m/s, by how much would kinetic energy increase

Which of the following is not biomass? A-Corn B-Cow manure C-evergreen tree D-Rusted iron railing

Which one of the following statement does not accurately describe the diatonic scale as it corresponds to the setup on a piano keyboatd

One major advantage of alternating current over direct current is that you can use alternating current with a device known as a transformer. The reason why alternating current works in transformers but direct current does not is?

A large balloon is initially filled to a volume of 1.96 l at 318.44 k and a pressure of 2.89 atm. what volume of gas will the balloon contain at 1.77 atm and 336.33 k?

How to calculate kinetic energy? (physics/physical science)

What's the difference between the offspring of an asexual organism and a sexual organism

The contamination that results from the spread of bacteria from meat to vegetables is called

A rock has a mass of 5 kg on the moon. What is the mass of the rock on the earth