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A 9.5 V battery supplies a 1.5 mA current to a circuit for 7.0 h. How much charge has been transferred from the negative to the positive terminal?
How much electric potential energy has been gained by the charges that passed through the battery?
A solenoid used in a plasma physics experiment is 10 cm in diameter, is 1 m long, and carries a 35 A current to produce a 100 mT magnetic field. How many turns are in the solenoid?
Why do Polaroid sunglasses reduce glare, whereas non-polarized sunglasses simply cut down the total amount of light reaching the eyes?
The kinetic energy of an electron emitted from a 32P nucleus that beta decays into a 32S nucleus is observed to be 1.35MeV. What is the energy of the accompanying neutrino of the decay process
A circuit containing a 3.9H inductor has an alternating current applied to it. If Irms is 4.4 A and Vp is 45V, find the frequency of the signal
A convex spherical mirror has a radius of curvature of 10.6cm. Calculate the size of the image
Assuming that a spacecraft lands on an asteroid and bores a hole perpendicular to its surface; it is noticed that the sun shines straight down to the bottom of the hole. what is the circumference and radius of that asteriod
The average speed of a nitrogen molecule in air is about 6.70 ? 102 m/s, and its mass is about 4.68 ? 10-26 kg, What average force does the molecule exert on the wall
Starting from rest, a crate of mass is pushed up a frictionless slope of angle by a horizontal force of magnitude. What is the speed of the crate at the top of the slope
The force stretching the D string on a certain guitar is 6400N. The string's linear mass density is 0.01kg/m. What is the speed of waves on the string?
When a pin of mass 0.140 g is dropped from a height of 0.50 m, 0.05% of its energy is converted into a sound pulse by duration of 0.1 s. For both questions below, suppose that the intensity is I=P/4pir^2.
A uniform disk of mass 4m is rotating an a plane parallel to the ground with angular frequency of 12 rad/sec. What fraction of kinetic energy was lost
1. Given the value for the universal gravitational constant, the average value for the acceleration due to gravity at the surface of Earth
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