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A telescope on earth uses a circular mirror of diameter 10 m (that is the aperture diameter). how close to each other could two stars, that are 20 light years away from the earth, be in order for the telescope to resolve them using a wavelength of 500 nm? Express your answer in meters. hint: A light year is the distance that light travels in a year.
A -10nC charge is located at (0,0) on the x-y axis. What are the magnitudes of the electric field vectors at positions: (5 cm, 5 cm) and (0 cm, 5 cm)?
Vanguard 1, launched in 1958, is the oldest human artefact/satellite in orbit. It weighs 1.47 kg and orbits the Earth every 134.2 minutes. At its closest distance it is 654 km from the surface of the Earth. Assume that it is in a circular orbit an..
A 500g particle has velocity vx = -5.0m/s at t = -2s. Force Fx = (4-t^2)N is exerted on the particle between t = -2s and t = 2s. What is the particle's velocity at t = 2s
a parallel-plate capacitor has an area of 5.50 cm2 and the plates are separated by 1.06 mm with air between them. it
An electron of mass 9.11x10^-31 kg has an initial speed of 3.00x10^5 m/s. Determine the magnitude of the force exerted on the electron
A bucket of mass 2.00 kg is whirled in a vertical circle of radius 1.10 m. At the lowest point of its motion the tension in the rope supporting the bucket is 25.0 N. Find the speed of the bucket
A pendulum consists of a point mass of 5 kilogram and is hanging from a mass less string of 2 m. Obtain the angular velocity of the pendulum when the point mass is exactly at the lowest point
klose outfitters inc. believes that its optimal capital structure consists of 55 common equity and 45 debt and its tax
Two sources of sound of equal loudness have frequencies of 448 Hertz and 452 Hertz. Determine how many beats per second would one hear
A light ray passes during a spherical raindrop, undergoing refraction as it enters the drop, than total internal reflection, and refraction as it leaves the drop. Show that the angle of the incident ray and exiting ray is 4 sin-1 (sin θ/n)-2θ
An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. What is the work done by the force
A satellite that weighs 4900 N on the launchpad travels around the earth's equator in a circular orbit with a period of 1.667 h. Calculate the magnitude of the earth's gravitational force on the satellite
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