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Two stars, with masses m1 and m2 that are initially very far apart and at rest (and even farther from any other stars) are pulled together by their gravitational attraction. Determine their relative speed when they are a distance d apart from one another. Put your answer in terms of given quantities (m1, m2, d) and any relevant physical quantities.
q1. a loudspeaker is placed between two observers who are 120 m apart along line connecting them. if one observer
A block of mass M=0.20 kg is attached to a spring with force constant k=12.0 N/cm. Calculate the period the resulting oscillations and the total energy of the system assuming no damping
The threshold intensity for a human eye to sense the presence of light is 50 photons falling on the retina within a period of 0.1 s. Estimate how far away the star can be away
A straight filament 7.00 m in length that is uniformly charged has a total positive charge of 2.0 uC, calculate the electric field at the surface of the cylinder and the total electric flux through the cylinder
two 1 microcoulomb point charges are located on the x-axis at x 2m and at x -2m. find the magnitude of the electric
If 18.75 mol of helium gas is at 10.0*C and a gauge pressure of0.350 atm. calculate the volume of the helium gas under these conditions
typical household currents are on the order of a few amperes.a. if a 1.64 a current flows through the leads of an
A 208.3 gram pendulum bob on a 1.92 meter long string is pulled to a height above its lowest position such that it makes an angle of 19.0 degrees with the vertical. Determine the speed of the pendulum bob
two charged dust particles exert a force of 7.3times10-2n on each other. what will be the force if they are moved so
A playground merry-go-round has radius 2.10 m and moment of inertia 2000 kg · m2 about a vertical axle through its center, How much work did the child do on the merry-go-round
A 16 g rifle bullet traveling 180 m/s buries itself in a 3.5kg pendulum hanging on a 2.7 m long string, which makes the pendulum swing upward in an arc. find the horizontal component of the pendulum's maximum displacement.
A balloon is initially stationary and full of air. The air in the balloon has a mass of 2 g. What speed does the balloon have
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