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1: A bolt on a car engine is to be tightened with a torque of 35 Newton meters. If you have a 25 cm long wrench, what force should you exert?
1.4 N
1.4 x 102 N
8.8 N
8.8 x 10-1 N


2: Two disks have the same mass, but one (designated as D) has twice the diameter of the other (designated as d). Which would be harder to start rotating?
D
d
They are equally hard to rotate
Not enough information given


3: Angular acceleration is the rate of change of:
Linear displacement
Angular displacement
Linear velocity
Angular velocity


4: What is the angular velocity in rad/sec of the tip of a second hand of a watch?
1 rad/sec
6 rad/s
0.60 rad/sec
0.10 rad/sec


5: The direction of the rotation of a spinning object can be changed only by applying a(n) ______.
Force
Torque
Velocity
None of the Above


6: To relate the Angular momentum of a particle with its linear momentum, you need the particle’s:
Displacement from the origin
Distance from the origin
Velocity vector
Torque


7: Mass is an analogous linear quantity to the angular form of:
Weight
Torque
Inertia
Acceleration


8: As a gyroscope slows down due to friction, the rate of precession increases due to:
The direct relationship between angular momentum and precession
The inverse relationship between inertia and angular acceleration
The direct relationship between torque and angular acceleration
The inverse relationship between angular momentum and precession


9: The heavy rim around a Frisbee is useful because it gives it:
A large moment of inertia
A small moment of inertia
A decrease in the gyroscopic effect
An increase in it’s precession


10: An object moving in a circle at constant speed has:
No acceleration
Acceleration tangent to the circle
Acceleration towards the center of the circle
Acceleration away from the center of the circle

2007-12-13 06:50:35 · 2 answers · asked by Anonymous in Science & Mathematics Physics

2 answers

1)F*d=T
F*0.25=35
F=140

2) D, since I=m*R^2/2 for a uniform disk

3) Angular velocity

4) 2*pi rad/minute
or 0.1 rad/sec

5) Torque

6) Distance from the center of rotation or radius

7) Inertia

8)

9) Large moment of inertia

10) No angular acceleration

j

2007-12-13 07:42:08 · answer #1 · answered by odu83 7 · 0 0

It is very possible you are psychic, if not that, a very strong intuition. But let me just advise you not to take advantage of this gift. This is a gift that can be rewarding, or lead to spiritual darkness. I have a psychic person in my family, and at first, she went the wrong way, turning to tarot cards and other sources of practical magic to heighten her psychic ability. Sophist it to say, a curse came back to haunt the family from centuries ago, and it was fully realized the mistake of delving into the supernatural world. The supernatural world is not to be messed with. Though, I think there is great credibility to horoscopes and numerology, I think it is a territory to be careful in. Take this from a person who is NOT a religious zealot by the way, and don't be sucked into "white magic" either. Magic is never a good thing. I hope in the future you can work as a honest to God psychic. My mother attended a psychic who could just look at the person and tell them their future, in a very cryptic, but correct fashion not using any sort of tool to guide him. I hope you can be like that some day, but as said before, be careful spiritually, because being psychic is a door that can open up to a lot of dark things when taken advantage of.

2016-04-09 01:05:19 · answer #2 · answered by Anonymous · 0 0

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