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An electron (mass of 9.110×10-31kg and charge of -1.602×10-19C is released at rest above the surface of the earth (where g = 9.81 m/s2). A second electron directly below it exerts an electrostatic force on the first electron that exactly cancels the gravitational force. What is the distance between the two?
A square coil (20.0 cm × 20.0 cm) that consists of 100 turns of wire rotates about a vertical axis at 1 500 rev/min. find the maximum emf induced in the coil by this field
At some distance from a point charge, the electric potential is 618.0 V and the magni- tude of the electric field is 160.0 N/C. Determine the distance from the charge
A parallel-plate capacitor has a capacitance of 19.0 µF. What charge on each plate would produce a voltage of 36.0 V between the plates? What is the voltage between the plates?
The speed of light in material A is 1.4 times as large as it is inmaterial B. What is the ratio of the refractive indices ,nA/nB, of these materials
An ideal transformer has 50 turns in its primary and 400 turns in its secondary. 8.0- ac is connected to the primary. What is voltage available at the secondary
It is possible to return the current in the bulb to the value calculated in part (a) by adding an inductor in series with the bulb and the capacitor. What is the value of the inductance of this inductor
If the mass of the child and sled is 40 {rm kg}, what average force do you need to apply to stop the sled? Use the concepts of impulse and momentum.
Two objects are connected by a string that passes over a frictionless pulley as shown in the figure. Assume the incline is frictionless and take m1=2.00kg, m2=6.00kg and theta=55.0 degrees. (a) Draw free-body diagrams of both objects (b) find the mag..
Explain the various thermodynamic principles behind solar refrigeration (Such as 1St law of thermodynamics, 2nd law of thermodynamics...) with equations
whose first two components are the polar coordinates of the horizontal displacement between the planes, and whose third coordinate is the vertical displacement between the planes. Consider east to be the positive x axis and north to be the positiv..
A circular surface with a radius of 0.057 m is exposed to a uniformexternal electric field of magnitude 1.44 × 104N/C. The electric flux through the surface is 78 N ·m2/C.
At a certain location, Earth's magnetic field of 53 µT is horizontal and directed due north. find the angle between the current direction and due north
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