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A communications satellite with a mass of 180 kg is in a circular orbit about the Earth. The radius of the orbit is 45900km as measured from the center of the Earth. What is the weight of the satellite on the surface of the Earth? What is the gravitational force exerted on the satellite by the Earth when in orbit?
What is Kepler's First Law and in this experiment, there are eight pairs of photographs. In each pair, what things are the same in each? What things are different?
The beam emerging from a ruby laser (wavelength 694.3 nm) passes through a circular aperture 2.4 mm in diameter. what is the angular spread of the beam
A magician pulls a tablecloth from under a 200 g mug located 30.0 cm from the edge of the cloth. The cloth exerts a friction force of 0.100 N on the mug, and the cloth is pulled with a constant acceleration of 3.50 m/s2.
A loud speaker is playing rock music. Consider the sound from it as a spherical wave. what is the sound intensity level
A 3.0 kg mass is supported by a steel wire of diameter 0.60 mm and length 1.4 m. How much will the wire stretch under this load
A generator delivers an AC voltage of the form ?v = (90 V) sin (95?t) to a capacitor. The maximum current in the circuit is 1.50 A. Find the following. (a) rms voltage of the generator V (b) frequency of the generator Hz (c) rms current A (d) reactan..
suppose 1.7 mol of a monatomic ideal gas initially at 7.8 l and 290 k is heated at constant volume to 550 k allowed to
We all know that your homes have primary voltage Vp 120V that comes to them, What type of transformer is needed to reduce the voltage
A turn on a racetrack has a radius of curvature of 2000 ft and a bank angle theta. If cars travel at 140 mph through the turn find a) the minimum bank angle so the cars won't slip sideways during the turn.
Calculate the acceleration due to gravity on Neptune. The radius of Neptune is about 2.21 x 107 m and its mass is 1.03 x 1026 kg. m/s2 (downward)
a disk of radius 1.2 cm has a surface charge density of 7.0 microcm2 on its upper face. what is the magnitude of the
A container of water begins with a heat capacity of 500J/K (constant) and a temperature of 70?C. What is the change in the entropy of the water
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