Practice Exam Answers

4 verified answers

Based on the tug of war picture, what is the net force?

190 cap n

10 cap n

negative 10 cap n

negative 190 cap n

Which statement best compares light passing through the two blocks?

Light is only refracted once as it passes in and out of Object Y.

Light is refracted less when it passes through Object Y.

Light moves faster as it moves within Object X.

Light is not separated by wavelength as it exits Object X.

How would this change affect the electric circuit?

A switch is opened, so the circuit would be complete and unbroken and the lights in the circuit would shine.

A switch is closed, so the circuit would be complete and unbroken and the lights in the circuit would shine.

A switch is opened, so the circuit would be incomplete and broken and the lights in the circuit would not shine.

A switch is closed, so the circuit would be incomplete and broken and the lights in the circuit would not shine.

Which machine has the greatest output force?

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