Period and frequency
Define the term period
A period is the amount of time it takes an object to do one cycle. The equation is T= loops/time
When an object is traveling in circular motion which way does the acceleration vector point? (Which way is the object accelerating ?)
Towards the center of the circle
What is the acceleration of an object that has a velocity of 15.0 m/s and is moving in a circle of radius 20.0 m?
a = v2/r = (15.0m/s)2/20.0 m = 11.3 m/s2
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What is the relationship between period and frequency ?
They are inverses of each other
Increasing the mass of an object traveling in UCM will effect the period in what way?
It will decrease the period. (the amount of time to do 1 circle will decrease )
An object is experiencing an acceleration of 2.0 m/s2 while traveling in a circle at a velocity of 4.0 m/s. What is the radius of its motion?
r = v2/a = (4.0m/s)2/2.0m/s2 = 8 m
What organelle is the "powerhouse of the cell?"
Mitochondria
A pendulum completes one cycle in 0.4 s.
What is the frequency?
2.5 Hz
When an object is traveling in circular motion which way does the force vector point?
towards the center of the circle
An object is experiencing an acceleration of 0.5 m/s2 while traveling in a circle of radius 50 m. What is its velocity?
5 m/s
Name a greenhouse gas
water, co2, methane, co ect.
A runner completes 6 laps around a circular track in 420 s.
What is the period?
70 s
When an object is traveling in circular motion which way does the velocity vector point?
What is the net force acting on a 2.0 kg object that has a velocity of 8.0 m/s and is moving in a circle of radius 1.5 m?
85 N
What is Jupiter's largest moon?
A) Europa
B)Callisto
C)Ganymede
D)IO
Ganymede
An object is spun in a circle of radius 1.5 m with a frequency of 4.0 Hz. What is its velocity?
37.68
An object travels in a circular path of radius r at a constant speed v. What happens to the object’s acceleration if the radius of the circle is doubled and the speed stays unchanged?
It is cut to a half
A 0.02 kg ball spins in a horizontal circle of radius 1.5 m with a frequency of 3.0 Hz. What is the tension force in the string?
F=m4^2 rf^2=(0.02kg)(4)(〖π^2〗^ )(1.5m)(3.0Hz^2=10.6 N
What was Plattel's undergraduate degree in ?
Environmental science, the best science !