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Science
Oscillations And Waves
Quiz 2
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Q.1
a=−ω2xmcos(ωt+ϕ)a=−ω2xm\cos(ωt+ϕ)a=−ω2xmcos(ωt+ϕ) the aim of the above formula is to find?
disntance
displacement
velocity
acceleration
angular velocity
Q.2
x=xmcos(ωt+ϕ)x=xm\cos(ωt+ϕ)x=xmcos(ωt+ϕ) the aim of the above formula is to find?
distance
displacement
velocity
acceleration
angular velocity
Q.3
ω=kmω=\sqrt{\frac{k}{m}}ω=mk the aim of the above formula is to find?
distance
displacement
velocity
acceleration
angular frequency
Q.4
T=2πmkT=2π\sqrt{\frac{m}{k}}T=2πkm the aim of the above formula is to find?
distance
period
acceleration
angular frequency
Time
Q.5
The value of xmxmxm determines how far the particle moves in its oscillations and is called the amplitude of what?
oscillations
simple harmonic motion
freeze-frames
velocity
distance
Q.6
F=−kxF=−kxF=−kx for the force acting on the block, the formula can now relate the spring constant k (a measure of the stiffness of the spring) to the mass of the block and the resulting angular frequency of what formula?
k=mω2k=mω^2k=mω2
k=mvk=\frac{m}{v}k=vm
k=ωmk=\frac{ω}{m}k=mω
m=kωm=kωm=kω
m=kω2m=kω^2m=kω2
Q.7
A student in a band notices that a drum vibrates when another instrument emits a certain frequency note. This phenomenon illustrates
reflection
refraction
resonance
doppler effect
Q.8
Sound is an example of a
transverse wave
longitudinal wave
focal wave
electromagnetic wave
Q.9
What is common with all electromagnetic and mechanical waves?
They travel at the same speed
They transfer energy
They are all longitudinal waves
They are all transverse waves
Q.10
The number of wavelengths that pass a point each per second is:
frequency
period
longitudinal
transverse wave
Q.11
A truck with bad shock absorbers bounces up and down after hitting a bump. The truck has a mass ofkg and is supported by four springs, each having a spring constant ofN/m. What is the period for each spring?
0.26 sec
1.645 sec
0.26 hz
1.645 hz
Q.12
An object attached to one end of a spring makescomplete vibrations in 10s. Its period is:
0.50 s
2 s
0.5 Hz
2 Hz
Q.13
A pair of trapeze performers at the circus is swinging from ropes attached to a large elevated platform. Suppose that the performers can be treated as a simple pendulum with a length ofm. Determine the period for one complete back and forth cycle.
2 sec
12 sec
8 sec
10 sec
Q.14
An object is attached to a vertical spring and bobs up and down between points A and B. Where is the object located when its kinetic energy is a maximum?
at either A or B
midway between A and B
one-third of the way between A and B
one-fourth of the way between A and B
Q.15
Which material does sound travel the fastest?
solid
liquid
gases
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