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An electron and a anti-electron (Positron) circle eachother at a distance of 1.00x10^-19m. What is the electrostatic force between the particles? What is the potential energy of the system? Is this energy positive or negative?
The height of the haystack is 1 meter. You press down on topof the stack and discover that to compress the stack by 25cm, What is the haystack's spring constant
There is an electric field of 113N/C directed along the + x axis. If the string makes an angle 26 degrees with the y axis when the sphere is in stability, what is the charge on the sphere.
A 8760-kg car is travelling at 29.7 m/s when the driver decides to exit the freeway by going up a ramp, What is the magnitude of the average drag force exerted on the car
Flight to Mars. To send a satellite from Earth to Mars, a rocket must accelerate the satellite until it is in the correct elliptical orbit around the sun. What is the semimajor axis of the satellite's orbit
A tire of an automobile has a gauge pressure of 30 psi at the top of a mountain, and the air temperature inside the tire is 300K. The atmospheric pressure at the top of the mountain is 1.7 atm.
three resistors of 75, 50 , 100 ohms are connected to a 9 volt source. determine the power dissipated by the circuit
A cue stick hits a cue ball with an average force of 23.8 N for a duration of 0.0246 s. how fast is it moving after being struck
You bring a 350-g wrench into the house from your car. The house is 15 C warmer than the car, and it takes 2.52 kJ of energy to warm the wrench by this amount. Find (a) heat capacity of the wrench and (b) specic heat of the metal it's made from.
Because of the Earth's rotation, a plumb bob does not hang exactly along a line directed to the center of the Earth. How much does the plumb bob deviate from a radial line
Transcranial magnetic stimulation (TMS) is a noninvasive technique used to stimulate regions of the human brain. Determine the induced emf within a circle of tissue of radius 1.9 mm
find a horizontal force needed to pull a mass of 500 gram at constant velocity on a level surface and µk = 0.3?
As the temperature of ice is increased, it changes first into a liquid and then into a vapor. How might one produce liquid carbon dioxide
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