Question

1. Four springs are stretched to the same distance from the equilibrium position. The spring constants are listed in the table.

Which lists the springs based on the amount of elastic potential energy, from greatest to least?

a. X, Y, W, Z

b. X, W, Y, Z

c. Z, W, Y, X

d. Z, Y, W, X


2.

Which fields would most likely make use of spectroscopy techniques? Check all that apply.

a. food production

b. medical research

c. scientific research

d. space research

e. weather forecasting



3.

Which changes in an electric motor will make the motor stronger? Check all that apply.

a. using a stronger permanent magnet

b. using a weaker permanent magnet

c. increasing current in the electromagnet

d. decreasing current in the electromagnet

e. increasing the distance between the magnets

f. decreasing the distance between the magnets