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Geosynchronous satellites orbit the Earth at a distance of 4.217 × 107 m from the Earth's center. Their angular speed at this height is the same as the rotation rate of the Earth, so they appear stationary at certain locations in the sky. What is the weight of a 1750-kg satellite at this distance? (The period of Earth's rotation is 23 days 56 minutes and 4 seconds.)
Light of wavelength 624 nm is incident perpendicularly on a soap film suspended in air. Assume the soap film has n = 1.33. What are the smallest two thicknesses of the film for which reflections from the film undergo fully constructive interference?
A solid puck with radius R1 = 0.9 m and mass M = 1.4 kg is sitting on a frictionless table. What is the angular acceleration of the puck in rad/s2
A laser pulse has an energy of 15 J and a beam radius of 2 mm. The pulse duration is 11 ns and the energy density is constant within the pulse. What is the spatial length of the pulse
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. What is the net charge of all these electrons
Certain sharks can detect an electric field as weak as 1.1 mu V/m . To grasp how weak this field is, how far apart would the plates have to be
In a car lift, the output plunger has a radius of 9cm. the weight of the plunger and the car is 21600N. What is the gauge pressure of the hydraulic oil used in the operating lift.
A bottle rocket is launched at an angle of 30 degrees from the ground with a speed of 200m/s. What is the range of the rocket if it lands on level ground
Use Equation m
a rocket takes off at an angle of 20deg from vertical. two observers are standing 20 miles away from the lunch site so
A simple gaussmeter for measuring horizontal magnetic fields consists of a stiff 42 cm wire that hangs from a conducting pivot, What is the equilibrium angular displacement of the wire from vertical if the horizontal magnetic field is 0.04 T and the..
For a safe re-entry into the Earth's atmosphere, the pilots of a space capsule had to reduce their speed from 2.76 E 4 m/s to 1.02 E 4 m/s. For how long did they have to fire their engine
A Federation starship (7.5 multiplied by 106 kg) uses its tractor beam to pull a shuttlecraft (5.0 multiplied by 104 kg ) aboard from the distance of 12 km away.
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