PHYS 165 MODULE 6 ACTUAL TEST
QUESTIONS AND SOLUTIONS GRADED A+
PREMIUM RESOURCE
●● Of the following objects in motion, which one is exhibiting simple
harmonic motion?
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.
Answer: *True*
Shorter Period= increase acceleration
Longer Period= Increase the string length, decrease the acceleration due
to gravity by going to the moon.
●● 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
Answer: *False*
decrease =
increase =increase mass, decrease spring constant
●● True or False: Electromagnetic waves need a medium to disturb.
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?
Answer: Sound
- vibration (20- 20,000 hertz)
- parallel
- infrasonic = below our range
- ultrasonic = above our range
QUESTIONS AND SOLUTIONS GRADED A+
PREMIUM RESOURCE
●● Of the following objects in motion, which one is exhibiting simple
harmonic motion?
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.
Answer: *True*
Shorter Period= increase acceleration
Longer Period= Increase the string length, decrease the acceleration due
to gravity by going to the moon.
●● 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
Answer: *False*
decrease =
increase =increase mass, decrease spring constant
●● True or False: Electromagnetic waves need a medium to disturb.
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?
Answer: Sound
- vibration (20- 20,000 hertz)
- parallel
- infrasonic = below our range
- ultrasonic = above our range
