In which of the following situations is an electric current not produced?
a. a loop of wire rotates in a steady magnetic field
b. a loop of wire is stationary in a steady magnetic field
c. the magnetic field through the loop is increasing
d. the magnetic field through the loop is decreasing...
I was wondering if anyone could tell me the formula for work?
I have to answer this question:
How much work does a 12-V battery do in pushing 2mC of charge through a circuit containing 1 light bulb.
A. .006 J
B. .012 J
C. .024 J
D. The answer depends on the type of bulb in the...
well if the center of mass changes as your shape changes, then the answer can't be that the center of mass is located at a fixed point in your body. Is there a way to find out where the center of mass is in an object?
Can someone explain how center of mass changes? We haven't actually learned about the center of mass, so I don't know how to even approach this homework question.
ok so here's the question:
If you stand with your back against a wall, you find you can not bend over to pick something up...
OHHH-ok my professor put the wrong answers with the wrong question and flipped it around but i didnt see that, so the question doesn't make sence...ignore my question...
Now I'm confused again...
What kind of motion does a constant, non-zero force produce on an object of constant mass?
a. constant speed
b. constant acceleration
c. increasing acceleration
d.it depends on the speed of the object
I know that if there's no friction, the force on the object...
thank you...good idea. I made the diagram, and it would have an unbalenced force without friction, so i think friction has to be 400 N.
do you think I'm right?
I was wondering if someone could help explain this. I don't understand how to calculate the friction force...
So here's the question I'm working on
You are applying a 400-Newton force to a freezer full of chocolate chip ice cream in an attempt to move it across the basement. It will not...
accelerating-but can acceleration also be slowing down? our professor used the term decceleration but that's not listed, and its not stopped the whole time, which is why i had a hard time answering the question. Thank you!
ok. I have to look at this strobe diagram of a ball (assuming it is moving from left to right)
o...o...o...o...o..o.oo
Which statement best describes the motion of the ball shown in the strobe diagram below? (assume the ball moves from left to right)
The ball is
a. moving with constant...
Ok the question I have is pretty simple
we claimed thatif the air resistance could be neglected all objects on hte moon wuld fall at
a. the same constant speed
b. an increasing acceleration
c. the same constant acceleration
d. a decreasing acceleration
Ok so i know its not the same...
does anyone know the answer to this?
If the mass of an object in free fall is doubled, its acceleration
a. doubles
b. increases by a factor of four
c. stays the same
d. is cut in half
Can anyone help me with this?
If we use plus and minus signs to indicate teh directions of velocity and acceleration, in which of the following situations does the object speed up?
a. positive velocity and negative acceleration
b. negative velocity and positive acceleration
c. positive...
Can anyone help me with this?
Assume that you are driving down a staight road at a constant speed. A small ball is tied on the end of a string hanging from the rear view mirror. Which way will the ball swing when you apply the breaks?
a. forward
b. backward
c. it will not swing
d...