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A satellite circles the earth in an orbit whose radius is twice theearth's radius. The earth's mass is 5.98 x 10 24 kg, and itsradius is 6.38 x 10 6 m. What is the period of the satellite.
A helium balloon ride lifts up passengers in a basket. Assume the density of air is 1.28 kg/m3 and the density of helium in the balloon is 0.18 kg/m3. What is the magnitude of the buoyant force on each person
An FM transmitter delivers 30 KW into a 50 ohm antenna. Calculate the modulation index, the sensitivity of the transmitter's modulator and write the equation of the FM signal
A home run just clears a fence 105 m from home plate. The fence is 4.00 m higher than the height at which the batter struck the ball, At what speed did the ball leave the bat
A 4.90-g lead bullet traveling at 550 m/s is stopped by a large tree, what is the increase in temperature of the bullet
Solar cells generate a potential difference when exposed to sunlight. In an experiment, you wish to charge a rechargeable battery by connecting it in series to an array of solar cells. What is the area of the array of solar cells
Mary applies a force of 79N to push a box with an acceleration of 0.56 m/s. When she increases the pushing force to 90 N, What is the mass of the box
An object of height 5 cm is placed 30 cm in front of spherical concave mirror. If the image is real and 10 cm high, what is the radius of curvature of the mirror
A runner traveling with an initial velocity of 1.5 m/s accelerates at a constant rate of 1.6 m/s^2 for a time of 3 seconds. What distance does the runner cover during this process
Two joggers run at a constant velocity of 7.5 m/s toward the east. At time t=0, one is 15m east of the origin and te other is 15m west.
Carol and Robin share a house. To get to work Carol walks north 2.5{\rm km} , while Robin drives west 8.0{\rm km} . how far apart are there two workplaces
A magnetic field of 1.1 T is perpendicular to a square coil of 14 turns. The length of each side of the coil is 5 cm. Find the magnetic flux through the coil
Care for the coffee as though it were pure water and neglect energy exchanges with environment.
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