Phys 165 Module 6 Exam Questions
With Complete Solutions
What do we call *motion that is repeated as a function of time*? CORRECT ANSWERS
Periodic Motion
Of the following objects in motion, which one is exhibiting simple harmonic motion?
CORRECT ANSWERS 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
ANSWERS *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 CORRECT ANSWERS *False*
decrease =
increase =increase mass, decrease spring constant
True or False: Electromagnetic waves need a medium to disturb. CORRECT
ANSWERS *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 ANSWERS Sound
- vibration (20- 20,000 hertz)
- parallel
- infrasonic = below our range
- ultrasonic = above our range
True or False: According to the Law of Reflection, the angle of incidence is the same
size as the angle of reflection. CORRECT ANSWERS *True*
With Complete Solutions
What do we call *motion that is repeated as a function of time*? CORRECT ANSWERS
Periodic Motion
Of the following objects in motion, which one is exhibiting simple harmonic motion?
CORRECT ANSWERS 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
ANSWERS *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 CORRECT ANSWERS *False*
decrease =
increase =increase mass, decrease spring constant
True or False: Electromagnetic waves need a medium to disturb. CORRECT
ANSWERS *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 ANSWERS Sound
- vibration (20- 20,000 hertz)
- parallel
- infrasonic = below our range
- ultrasonic = above our range
True or False: According to the Law of Reflection, the angle of incidence is the same
size as the angle of reflection. CORRECT ANSWERS *True*
