PHYSICS 165 MODULE 9 EXAM SCRIPT 2026
UPDATED QUESTIONS WITH DETAILED
ANSWERS GRADED A+
⩥ amplitude. Answer: (A) the maximum distance of an object in SHM
from the equilibrium position. The amplitude is measured in meters.
⩥ pendulum. Answer: an object that will exhibit SHM, consists of a
mass (m) at the end of a string or rod of length, L, which is pivoted at
the other end, allowing the pendulum to swing back and forth.
⩥ period of a pendulum. Answer: (T) the time it takes to repeat its
motion once.
⩥ . Answer: T = 1/f = 2pi (square root(L/g)) - T is the period of the
pendulum in seconds, is the frequency of the pendulum in hertz, L is the
length of the pendulum in meters, and g is the acceleration due to gravity
in ms2. Usually, g is 9.80 ms2
⩥ A mass bouncing on a spring equation. Answer: T = 1/f = 2pi (square
root(m/k)) - the value m is the mass of the object bouncing on the spring
in kilograms, and k is the spring constant of the spring
,⩥ Dampened oscillations. Answer: occur when an outside force takes
energy away from the oscillating object, The process of dampening takes
energy out of the system and only changes the amplitude of the motion.
⩥ force that is usually responsible for damping oscillations?. Answer:
friction
⩥ Resonance. Answer: occurs when the frequency of one oscillation
matches the natural frequency of another object and that second object
starts oscillating as well.
⩥ waves. Answer: periodic disturbance of a medium that transfers
energy from one place to another without transferring matter (sound,
light, surf)
⩥ medium. Answer: material through which a wave moves and that is
disturbed by the wave.
⩥ what is the difference between a mechanical wave and an
electromagnetic wave?. Answer: Mechanical waves (sound) need a
medium to move through, while electromagnetic (light) waves do not
⩥ three types of waves. Answer: 1. transverse waves - medium is
disturbed in a direction that is perpendicular to the direction of travel of
the wave
, 2. longitudinal waves - disturbance of the medium and the direction of
motion of the wave parallel to each other.
3. surface waves - wave disturbs the medium in both parallel and
perpendicular motions, making it a combination of the other two types
of waves
⩥ wavelength. Answer: the distance from one crest to the next crest or
the distance from one compression to the next compression, the symbol
for wavelength is the Greek letter lambda, λ, and it is measured in
meters.
⩥ wave equation. Answer: v = fλ
⩥ reflection. Answer: the bouncing of a wave off a boundary between
two mediums
⩥ Law of Reflection. Answer: states that the incident ray, the reflected
ray, and the normal all lie in the same plane and that the angle of
incidence equals the angle of reflection.
⩥ what are the two types of reflection?. Answer: 1. Specular reflection is
reflection off a smooth surface where an image of the object can be seen
- occurs in mirrors
2. Diffuse reflection occurs when light bounces off a rough surface
UPDATED QUESTIONS WITH DETAILED
ANSWERS GRADED A+
⩥ amplitude. Answer: (A) the maximum distance of an object in SHM
from the equilibrium position. The amplitude is measured in meters.
⩥ pendulum. Answer: an object that will exhibit SHM, consists of a
mass (m) at the end of a string or rod of length, L, which is pivoted at
the other end, allowing the pendulum to swing back and forth.
⩥ period of a pendulum. Answer: (T) the time it takes to repeat its
motion once.
⩥ . Answer: T = 1/f = 2pi (square root(L/g)) - T is the period of the
pendulum in seconds, is the frequency of the pendulum in hertz, L is the
length of the pendulum in meters, and g is the acceleration due to gravity
in ms2. Usually, g is 9.80 ms2
⩥ A mass bouncing on a spring equation. Answer: T = 1/f = 2pi (square
root(m/k)) - the value m is the mass of the object bouncing on the spring
in kilograms, and k is the spring constant of the spring
,⩥ Dampened oscillations. Answer: occur when an outside force takes
energy away from the oscillating object, The process of dampening takes
energy out of the system and only changes the amplitude of the motion.
⩥ force that is usually responsible for damping oscillations?. Answer:
friction
⩥ Resonance. Answer: occurs when the frequency of one oscillation
matches the natural frequency of another object and that second object
starts oscillating as well.
⩥ waves. Answer: periodic disturbance of a medium that transfers
energy from one place to another without transferring matter (sound,
light, surf)
⩥ medium. Answer: material through which a wave moves and that is
disturbed by the wave.
⩥ what is the difference between a mechanical wave and an
electromagnetic wave?. Answer: Mechanical waves (sound) need a
medium to move through, while electromagnetic (light) waves do not
⩥ three types of waves. Answer: 1. transverse waves - medium is
disturbed in a direction that is perpendicular to the direction of travel of
the wave
, 2. longitudinal waves - disturbance of the medium and the direction of
motion of the wave parallel to each other.
3. surface waves - wave disturbs the medium in both parallel and
perpendicular motions, making it a combination of the other two types
of waves
⩥ wavelength. Answer: the distance from one crest to the next crest or
the distance from one compression to the next compression, the symbol
for wavelength is the Greek letter lambda, λ, and it is measured in
meters.
⩥ wave equation. Answer: v = fλ
⩥ reflection. Answer: the bouncing of a wave off a boundary between
two mediums
⩥ Law of Reflection. Answer: states that the incident ray, the reflected
ray, and the normal all lie in the same plane and that the angle of
incidence equals the angle of reflection.
⩥ what are the two types of reflection?. Answer: 1. Specular reflection is
reflection off a smooth surface where an image of the object can be seen
- occurs in mirrors
2. Diffuse reflection occurs when light bounces off a rough surface
