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A satellite is in a ciecular orbit 21000 km above the Earth's surface; it moves on a circular path nder the influence of nothing but the Earth's gravity.
Find the speed of the satellite. The radius of the Earth is 6.37m, and the acceleration of gravity at the satellite's altitude is 0.532655m/s square. Answer in units of km/s.
Find the time it takes to complete one orbit around the Earth. Answer in units of s.
A current of 2.45 A flows along the length of a long solid cylindrical conductor. The radius of the cylinder is 8.5 cm. The current is uniformly distributed through the conductor. Calculate the magnitude of the magnetic field 2.4 cm from the cente..
A gear system uses 300 joules of energy to move a 20-newton mass 10 meters to the right. How much energy was converted to heat
Suppose you are climbing up stairs, gaining 10 meters of height per minute. In order to do that, your body has to do some work, using energy, at a given rate. What is the power produced by your body? Ignore energy losses.
An artificial satellite circles the Earth in a circular orbit at a location where the acceleration due to gravity is 5.84 m/s2
Comet Halley has an orbital perios of 75 years and when it enters the inner Solar System, it passes within a few AU of the Sun. Determine the average distance of Comet Halley
A sailboat race course consists of four legs, defined by the displacement vectors , , , and , as the drawing indicates. find the distance of the fourth leg and the angle
Jason is practicing his tennis stroke by hitting balls against a wall. The ball leaves his racquet at a height of 60 cm above the ground at an angle of 80' with respect to the vertical. Is ball on its way-up or down when the ball strikes the wall?
What is the acceleration of a rising hot-air balloon if the ratio of the air density outside the balloon to that inside is 1.39? Neglect the mass of the balloon fabric and the basket.
Light of wavelength 550nm in a vacuum is found to travel at 1.96*10^8m/s in a certain liquid. Determine the index of refraction of the liquid
A standing wave pattern is created on a string with mass density = 0.00035 kg/m . A wave generator with frequency f = 62 Hz is attached to one end of the string and the other end goes over a pulley and is connected to a mass (ignore the weight of ..
The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. What is the weight of the heaviest bear that the ice can support without sinking completely beneath the water
A 0.058 kg aluminum bullet traveling at 481 m/s strikes an armor plate and comes to a stop. what is the bullet's temperature change in degrees Celsius
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