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1) The star Sirius is a distance of 8 light years from the earth. If Sirius suddenly stopped shining, how much longer would it be seen on earth? The answer is 8 years. Please explain how to get this answer.
Please helps me out for determining the following if the capacitor in the circuit below is initially uncharged.
The intensity of the light that reaches Earth from the star is 3.94 x 10-21 W/m2. At what rate does the star radiate EM energy
A helicopter is ascending vertically with the speed of 8 m/s. At a height of 65m above the Earth, a package is dropped from a window.
A 68kg woman stands on a very light, rigid board that rests on a bathroom scale at each end. She is standing 1.5m from one scale, and, 0.5m from the other. What is the reading on each of the scales.
A newly discovered planet has a mass of 7.88 x1026 kg, and has a satellite whose mass is 6.44 x 1011 kg. what is the gravitational attraction between them
The loop, having rotated by 45°, rotates clockwise another 30°, so that the normal to the plane points at an angle of 75° with respect to the direction of the magnetic field. Find the magnetic flux through the loop
Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of -0.6020 N when separated by 50 cm, center-to-center.
A uniform disk of radius 0.459 m and unknown mass is constrained to rotate about a perpendicular axis through its center. Find the mass of the disk
An engine absorbs 1.67 kJ from a hot reservoir at 277°C and expels 1.18 kJ to a cold reservoir at 27°C in each cycle, How much work is done by the engine in each cycle
The mass of the nuclide 16/8 O is 15.994 915 u. Determine its average binding energy per nucleon
A rifle bullet of mass 8.6 g is fired into a 1.23 kg block where it becomes embedded. what was the initial speed of the bullet
An airplane, capable of flying at a speed of 500 miles/hr in still air (i.e., the airplane can fly with a speed of 500 miles/he relative to the air), How long does it take the plane to fly over the river
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