angular velocity help!
Hi, I need help with the following 2 questions. My answers have *********
next to them. Any help is appreciated. Thank you.
1. A disk is rotating at a constant rate about a vertical axis through its center. Point Q is twice as far from the center of the disk as...
i agree with you. on question 1 and believe that only momentum is conserved. As for question 2, since it asks for inelastic collisions, i guess we have to assume that kinetic energy is not conserved at all.
Hi, I need help witht these 2 questions. My answers have *********** next to them. Any help is appreciated. Thanks.
1. A rocket is propelled forward by ejecting gas at high speed. The forward motion is a consequence of
Choices:
a) conservation of energy.
b) conservation of...
I see you point, then since the
The car's kinetic energy decreases. And The energy of the car/road/air system is constant, Can we say that Heat is also generated, since like you said that "energy doesn't just disappear. It is transformed into other forms, such as thermal energy." So heat in...
In question 4 I think that A) is true, but i don't think that C) is true because i don't believe that "The energy of the car/road/air system is constant," since the question specifies that the car slows down as a result of air friction. Due to air friction i think that choice C) is FALSE.
My answers have ******** next to them.
1. A woman holds a bowling ball in a fixed position. The work she does on the ball
Choices:
a) depends on the weight of the ball.
b) cannot be calculated without more information.
c) is equal to zero. ************************
2. When...
I need help with these 2 force questions. My answers have ***** next to them.
1) An object in equilibrium
Choices:
a) does not move.
b) has no forces acting on it.
c) has 0 accelleration. ***************
d) two of the above
e) all of the above
An object in equilibrium...