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Suppose a charge +Q is placed on Earth, and another charge +Q isplaced on the Moon.
a) Find the value of Q needed to "balance" the gravitationattraction between the Earth and the Moon.b) How would your answer to part (a) change if the distancebetween the Earth and the Moon were doubled? Explain.
Plot the probability distributions for the simple harmonic oscillator's ground state wave functions. Change the parameter that governs the ''width'' of the position distribution and see what happens to the width of the momentum distribution.
When a uniform electric field directed horizontally (from left to right) is introduced, equilibrium is eventually established with the mass hanging at an angle
An airplane flies eastward and accelerates uniformly. At one position along its path it has a velocity of 26.7 m/s. Find the airplane\'s acceleration
If the frequencies are swept over a plusminus.gif2.00% range centered on 86.0 MHz, what is the range of wavelengths broadcast
A 4900 kg lunar lander is in orbit 60 km above the surface of the moon. How much work must the thrusters do
A bullet of mass 13 g is fired with an initial speed of 289 m/s into a wooden block that is initially at rest. what is the mass of the block
Jimmy and his cart (with a combined mass of 200 kg) are moving along with a velocity v1 = 20 m/s i. What is the velocity of the combined system of two carts plus occupants after the collision
A child\'s top is held in place, upright on a frictionless surface. The axle has a radius of r = 3.96 mm. Two strings are wrapped around the axle, and the top is set spinning by applying T = 3.15 N of constant tension to each string
A regulation table tennis ball has a mass of 2.8g and is 40mm in diameter. What is its moment of inertia about an axis that passes through its center
A person walks 25.0 north of east for 3.10 km. explain how far would another person walk due north and due east to arrive at the same location?
A flat circular coil with 107 turns, a radius of 4.32 10-2 m, and a resistance of 0.472 ? is exposed to an external magnetic field that is directed perpendicular to the plane of the coil.
A spring has a force constant of 100 N/m and an unstretched length of .07 m. What is the centripetal force on the disc
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