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A stationary proton (q=1.60*10^6 c) is located among the poles of a horseshoe magnet. Where the magnetic field strength is 0.15 T. What is the magnitude of the magnetic force acting on the proton?
four standing wave segments or loops are observed on a string fixed at both ends as it vibrates at a frequency of 140
A 2.31?102g piece of copper at a temperature of 401.K and a 1.07?102g piece of aluminum at a temperature of 2.17?102K, What is the equilibrium temperature of the mixture
A cube of ice is taken from the freezer at -8.5°C and placed in a 97 g aluminum calorimeter filled with 292 g of water at room temperature of 20°C. The final situation is observed to be all water at 18°C. What was the mass of the ice cube?
the displacement of a standing wave on a string is given by D = 2.8sin(0.70x)cos(55 t), Find the speed of a particle of the string
Under favourable circumstances the human eye can detect 1.0e-18 J of electromagnetic energy. How many 600-nm photons does this represent.
A wire carrying a current of 8.00 A is to be formed into a circular loop of one turn. If the required value of the magnetic field at the center of the loop is 10.0 µT, what is the required radius?
describe the enery transformations that take place as you swing on a swing.why do you have to keep pumping to keep swinging as high? what happens if you stop pumping
Your car's fan belt turns a pulley at 3.00 rev/s . When you step on the gas for 1.25s , the rate increases steadily to 5.60 rev/s. Through what angle did the pulley turn while accelerating
When at rest, two trains have sirens that emit a frequency of 300 Hz. The trains travel toward one another and toward an observer stationed between them. What is the speed of the second train
Intelligent beings in a distant galaxy send a signal to earth in the form of an electromagnetic wave. What is the speed vrel of the galaxy relative to the earth
An object attached to a horizontal spring is oscillating back and forth along a frictionless surface. The maximum speed of the object is 1.75 m/s, and its maximum acceleration is 7.79 m/s2. How much time elapses betwen an instant when the object's sp..
A 27-cm-long wire with a linear density of 25 passes across the open end of an 83-cm-long open-closed tube of air. What is the tension in the wire
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