You are able to purchase goods with paper money because it acts as a

A. unit of account.

B. store of value.

C. certificate of debt

D. medium of exchange

How fast would you say the earth rotates near the equator?

Amy has a mass of 50kg she is riding a skateboard traveling 10m/s what is her momentum?

What part of the plant gives sugar

Electrons in excited hydrogen atoms are in the n = 3 energy level. How many different photon frequencies could be emitted as the atoms return to the ground state? (1) 1 (3) 3 (2) 2 (4) 4

A horse canters away from its trainer in a straight line, moving 37 m away in 9.1 s. It then turns abruptly and gallops halfway back in 1.8 s. Calculate its average speed for the entire trip. Express your answer using two significant figures.

Why is it necessary to evaluate an experiment

A positive charge Q1 = 34 nC is located at the origin. A negative charge Q2 = - 5.5 nC is located on the positive x-axis p = 15 cm from the origin. Calculate the location of x axis in cm where electric field is.

What scientific question does Isaac Asimov most clearly address with his story "Runaround"? A. Should robots be allowed to marry? B, should robots be treated as members of the family? C. Can robots be trained to follow a moral code? D.

The force generated by a single muscle fiber can be increased by increasing is called

Write an expression that results in a String consisting of the third through tenth characters of the String s.