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A satellite in a circular orbit around the earth with a radius 1.021 times the mean radius of the earth is hit by an incoming meteorite. A large fragment (m = 64.0 kg) is ejected in the backwards direction so that it is stationary with respect to the earth and falls directly to the ground. Its speed just before it hits the ground is 357.0 m/s. Find the total work done by gravity on the satellite fragment. RE 6.37·103 km; Mass of the earth= ME 5.98·1024 kg.
B) Calculate the amount of that work converted to heat.
A 180 g wire is held under a tension of 216 N with one end at x = 0 and the other at x = 15.0 m. At time t = 0, pulse 1 is sent along the wire from the end at x = 15.0 m. At time t = 37.9 ms, pulse 2 is sent along the wire from the end at x = 0. A..
A car drives west on sw 8th street at a speed of 30.7 mph. The driver hits the brakes and the car slows down with a constant acceleration of 4.8 m/s^2
If the maximum acceleration that is tolerable for passengers in a subway train is 2.45 m/s2 and subway stations are located 840 m apart, What is the travel time between stations
a 2.0 nc charge is placed on the x-axis at x=-3.0cm another 2.0nc charge is placed on the x-axis at x=3.0cm, What is the potential at the origin
A line of charge with uniform density of 28.0 nC/m lies along the line y = -15.0 cm, between the points with coordinates x = 0 and x = 32.0 cm
A potential difference of ?V = 12.0 V is found to produce a current of 0.40 A in a 3.2 m length of wire with a uniform radius of 0.40 cm, What is the resistivity of the wire
suppose there are 500 billion stars in the galaxy. How does your answer change if there are only 110 civilizations instead of 1.2×10^4.
A particle of charge +14 µC and mass 3.54 10-5 kg is released from rest in a region where there is a constant electric field of +490 N/C
As part of the safety investigation, two 1400 {rm kg} cars travelling at 23 {rm m/s} are crashed into different barriers. Find the average forces exerted on (a) car that hits a line of water barrels and takes 1.7 {rm s} to stop, and (b) car that hits..
Electrons accelerated by a potential difference of 12.43 V pass through a gas of hydrogen atoms at room temperature. Calculate the wavelength of light emitted with the shortest possible wavelength
A proton in the upper atmosphere moves at 8.6×105m/s , perpendicular to Earth's magnetic field, Find the curvature radius of the proton's trajectory
A rocket is fired from the ground but at 30m it runs out of fuel, How fast is it going when it comes back down to earth
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