Homework Statement
Two point charges, q1 and q2, are placed 0.30m apart on the x-axis, as shown in the figure(http://hiviz.org/apb89/ap/problems/2006-3.jpg" . Charge q1 has a value of -3.0x10^-9 C. The net electric field at point P is zero.
A) What is charge of q2 (Positive/Negative)
B)...
Homework Statement
A balloon is released from the bottom of a deep lake where the temperature is always 4 degC and rises to the top, where the pressure is standard atmospheric pressure. Assume that the balloon rises slowly enough that the temperature of the gas inside adjusts to its...
Just for future reference, this page helps a lot in pendulum problems
http://www.rowan.edu/colleges/lasold/PhysicsAndAstronomy/LabManual/labs/EnergyInAPendulum.pdf
Homework Statement
I have to calculate the speed of a bullet, based on the amount of displacement created when the bullet becomes lodged in the log.
I have the horizontal displacement, the weight of the log, and the length of the string.
Homework Equations
I'm not sure how to set this...
Homework Statement
A certain amount of work Wo is required to accelerate a car from rest to a speed v. How much work is required to accelerate the car from rest to v/2?
Homework Equations
W = Fd
The Attempt at a Solution
I know that if we were finding the distance instead of...
Homework Statement
A force of magnitude 9.00 N pushes three boxes with masses m1 = 1.30 kg, m2 = 2.80 kg, and m3 = 4.90 kg
Find the magnitude of the contact force between boxes 1 and 2.
Homework Equations
Fnet,x = ma?
The Attempt at a Solution
I thought that it would be 9.00 N...