1
PHYS 165 MODULE 6 EXAM QUESTIONS
AND CORRECT ANSWERS
What do we call *motion that is repeated as a function of time*? - correct-answer
-Periodic Motion
Of the following objects in motion, which one is exhibiting simple harmonic
motion? - correct-answer -Pendulum swinging back and forth, a mass bouncing on
a spring, a metronome
Periodic motion where the restoring force and acceleration of the object are both
directly proportional to the distance from the equilibrium position
True or False: A scientist wants to make the period of a pendulum *smaller*. One
way to accomplish this would be to *increase* the acceleration due to gravity. -
correct-answer -*True*
Shorter Period= increase acceleration
Longer Period= Increase the string length, decrease the acceleration due to gravity
by going to the moon.
, 2
True or False: A scientist is experimenting with an object bouncing on a spring. In
order to *decrease* the period of the object bouncing on the spring, the scientist
could do either of the following: *increase* the mass of the object or *decrease*
the spring constant of the spring - correct-answer -*False*
decrease =
increase =increase mass, decrease spring constant
True or False: Electromagnetic waves need a medium to disturb. - correct-answer -
*False*
- Electromagnetic waves have the ability to travel through a vacuum. They do not
need a medium in order to exist.
- Sinusoidal transverse waves.
- Electric and magnetic parts have proportional relationship with each other.
- Perpendicular to each other
Which of the following is a longitudinal wave? - correct-answer -Sound
- vibration (20- 20,000 hertz)
- parallel
- infrasonic = below our range
- ultrasonic = above our range
PHYS 165 MODULE 6 EXAM QUESTIONS
AND CORRECT ANSWERS
What do we call *motion that is repeated as a function of time*? - correct-answer
-Periodic Motion
Of the following objects in motion, which one is exhibiting simple harmonic
motion? - correct-answer -Pendulum swinging back and forth, a mass bouncing on
a spring, a metronome
Periodic motion where the restoring force and acceleration of the object are both
directly proportional to the distance from the equilibrium position
True or False: A scientist wants to make the period of a pendulum *smaller*. One
way to accomplish this would be to *increase* the acceleration due to gravity. -
correct-answer -*True*
Shorter Period= increase acceleration
Longer Period= Increase the string length, decrease the acceleration due to gravity
by going to the moon.
, 2
True or False: A scientist is experimenting with an object bouncing on a spring. In
order to *decrease* the period of the object bouncing on the spring, the scientist
could do either of the following: *increase* the mass of the object or *decrease*
the spring constant of the spring - correct-answer -*False*
decrease =
increase =increase mass, decrease spring constant
True or False: Electromagnetic waves need a medium to disturb. - correct-answer -
*False*
- Electromagnetic waves have the ability to travel through a vacuum. They do not
need a medium in order to exist.
- Sinusoidal transverse waves.
- Electric and magnetic parts have proportional relationship with each other.
- Perpendicular to each other
Which of the following is a longitudinal wave? - correct-answer -Sound
- vibration (20- 20,000 hertz)
- parallel
- infrasonic = below our range
- ultrasonic = above our range
