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Three point charges are located at the corners of an equilateral triangle as in the figure below. Find the magnitude and direction of the net electric force on the 1.75 μC charge. (Let A = 1.75 μC, B = 7.10 μC, and C = -3.84 μC.)
A 280-kg cylindrical piece of concrete pipe 1.0 m in diameter, 1.3 m long, and 3 cm thick is rolling toward you at a speed of 5 m/s. What is its approximate rotational angular momentum
X rays diffract from a crystal in which the spacing between atomic planes is 0.200nm. What is the angle of the first-order diffraction
Planet-X has a mass of 3.79×1024 kg and a radius of 5640 km. What is the First Cosmic Speed i.e. the speed of a satellite on a low lying circular orbit around this planet, what is the radius of the synchronous orbit of a satellite
A grinding wheel of radius 0.340m rotating on a frictionless axle is brought to rest by applying a constant friction force tangential to its rim. The constant torque produced by this force is 64.5 N • m. Find out the magnitude of the friction forc..
a particle with mass m is confined on a line with length l. with uncertainty principle estimate the minimum energy of
a pair of speakers connected to the same sound system face each other one at x 0 and the other at x 4.40 m. if they
question 1 silver has a resistance of 0.00198 ohms. what voltage would produce a current of 100 a?question 2 find the
Consider an event by space-time coordinates t=2.0s x=2.5*10^8 m/s relative to frame S. Find the value γ that will be required to transform coordinates among frames S and S'. Use c=3*10^8 m/s for the speed of light in vacuum
Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 60.7 degrees. Find the the angle the resultant force makes with dog A's rope
A guy is jumping a 800m wide river. He starts 120m above the river and the landing is 110m above the river. What speed should he take off in order to clear the river
A double speed trap is set up on a freeway. One police cruiser is hidden behind a billboard, and another is some distance away under a bridge. How far apart are the two cruisers
Light of wavelength 500.0nm appears to have a wavelength of 500.2nm when it reaches Earth from a distant star. Discover the velocity of the star if the speed of light is 3.00 x 10^8 m/s.
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