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The force of attraction between a -40 micro C and + 108 microC charge is 4 N. What is the separation between these two charges?
A double concanve lens has equal radii of curvature 15.1 cm. What is the index of refraction of the lens material
Unpolarized light with an average intensity of 845 W/m2 enters a polarizer with a vertical transmission axis. What is the orientation angle of the second polarizer relative to the first one
What is the Acceleration of an object moving on a circular track
An 88? resistor has a current of 0.70A and is connected in series with a 130? resistor. What is the emf of the battery to which the resistors are connected
An object moves with constant acceleration 3.55 m/s2 and over a time interval reaches a final velocity of 12.8 m/s. What is the distance it travels during this interval
Explain the phenomenon of resonance. Use the phase of the interfering waves to determine the conditions for and location of constructive and destructive resonance
A horizontal disk of mass 0.12kg and radius of 013m rotates freely about a vertical axis through its center with an angular speed of 5rad/s. What is the angular speed of the disk immediately after the material sticks to it
By how much does the ball clear the net. How far below top surface would the medallion appear if the observer (not wearing goggles) and the block were under water.
A uniform electric field of magnitude 415 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 3.00 cm. What is the work done by the field on the electron
A 0.500-kg particle has a speed of 2.30 m/s at point A and kinetic energy of 7.40 J at point B a) what is its kinetic energy at pt A. b) what is its speed at pt B.
The Doppler effect using ultrasonic waves of frequency 2.21×106 is used to monitor the heartbeat of a fetus. calculate the maximum velocity of the surface of the beating heart
An 8-kg ball hanging from the ceiling by a light wire 135cm long is struck in an elastic collision by a 2 kg ball moving horizontally at 5.00 m/s just before the collision. Find the tension in the wire just after collision.
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