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Three equal point charges, each with charge 2.00μC, are located at the vertices of an equilateral triangle whose sides are of length 0.700 meter. Obtain the electric potential energy U of the system? (Take as zero the potential energy of the three charges when they are infinitely far apart.)
At rest, a car's horn sounds the note A (440 Hz). The horn is sounded while the car is moving down the street. find Is the cyclist ahead of or behind the car
A person pulls a toboggan for a distance of 40.1 m along the snow with a rope directed 21.3 ° above the snow. How much work is done on the toboggan by the tension force
Light from an argon laser strikes a diffraction grating that has 6600 grooves per centimeter. The central and first-order principal maxima are separated by 0.320 m on a wall 1.00 m from the grating. Determine the wavelength of the laser light.
on a hot day a house is kept cool by an air conditioner. The outside temperature is 32 degrees celsius and the inside temperature is 21 degree celsius. what is the mechanical power that it requires to hold the inside temperature constant
A spring of force constant 205 N/m and unstretched length 0.260 m is stretched by two forces, How long will the spring now be
A ball of mass 0.9 kilogram and attaching it to the top of the door. Compute how high does the ball now rise on the side with the rod
Two charges, q1 = −3.00 mC and q2 = 4.50 mC, are located at −2.00 cm and 3.00 cm on the x axis, respectively. What are the magnitude and direction of the resulting field at (a) x = −3.00 cm? (b) x = 0 cm? (c) x = 5.00 cm?
A loudspeaker sounds a 600 Hz tone. Find the difference in the wavelength of the sound waves produced in air at -5°C and at 36°C
Assume that the masses of the chains, pulleys, and ropes are negligible and the crate is rising with an acceleration of 2.9 m/s2. Determine the force also examine the tension in the upper chain.
Some mass spectrometers use an electric field to give the incoming ions a certain known kinetic energy as they enter the magnetic field. What is the final kinetic energy of the ion just before it reaches the ion detector
A spacecraft approaching the earth launches an exploration vehicle. After the launch, an observer on earth sees the spacecraft approaching at a speed of 0.58c and the exploration vehicle approaching at a speed of 0.73c. What is the speed of the explo..
A small magnet of length 7.1 cm is placed at an angle of 80 degree to the direction of uniform magnetic field of magnitude 0.01 T. The observed torque has a magnitude of 0.07 N m. Find the magnetic moment of the magnet.
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