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An electric dipole consists of charges +2e and -2e separated by 1.0 nm. It is in an electric field of strength 4.0 x 106 N/C. Calculate the magnitude of the torque on the dipole when the dipole moment is (a) parallel to, (b) perpendicular to, and (c) antiparallel to the electric field.
A capacitor is completely charged with 670 nC by a voltage source that had 275 V. It's capacitance is 2.44nF. What is the stored energy if the air gap is now 4 mm
A cosmic-ray proton in interstellar space has an energy of 17.0 MeV and executes a circular orbit having a radius equal to that of Earth's orbit around the Sun, What is the magnetic field in that region of space
For an atom (mythical), there are three possible energy levels between which an electron can jump
A rocket is launched at an angle of 59° above the horizontal with an initial speed of 97 m/s. The rocket moves for 3s along its initial line of motion with an acceleration of 28m/s2.
A light string is wrapped around a 0.160-kg hollow 0.080-m-radius hoop. The hoop is released from rest and the fee end of the string is held in place. What is tension in the string while the hoop falls
Starting from rest, a basketball rolls from the top to the bottom of a hill, reaching a translational speed of 5.2 m/s. Ignore frictional losses. What is the translational speed of the frozen juice can when it reaches the bottom
A 60kg woman balances on the heel of her right shoe, whosearea is 0.5cm2. How many times atmospheric pressure is this
How many 95W light bulbs can you use in a 120V circuit without tripping a 17A circuit breaker? (The bulbs are connected in parallel, which means that the potential difference across each light bulb is V.)
Light hits the surface of water (n = 1.33) at an incident angle of 25.0 degrees with respect to the normal line. What is the angle between the reflected ray and the refracted ray? The answer is 136.5 but I'm getting 18.5.
Nerve propagation in your body occurs when large electric field in the cell membranes on neurons (?1.0×107 N/C) cause ions to move through the cell walls. What is the acceleration that the ion can get from this electric force
A light train is travelling on a straight section of track at a constant speed of 15 rm m/s. As it approaches next station, it starts to slow down at a rate of 5 rm m/s^2 until it stops at the station.
Calculate the escape velocity for a planet that has twice the mass of Earth and is half the size of Earth
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