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A satellite is in orbit 4.2*10^7 m from the center of Earth with a speed of 7,800 m/s. If the centripetal force on the satellite is 5,075 N, what is the mass of the satellite?
The stairs are 83 long and inclined at the angle of 31. If a player has a mass of 87, estimate his average power output on the way up. Overlook friction and air resistance.
An 11.70 kg weather rocket generates a thrust of 240 N. The rocket, pointing upward, is clamped to the top of a vertical spring. The bottom of the spring, whose spring steady is 470 N/m, is anchored to the ground.
The cord is after that pulled from below, shortening the radius of the circle in which block revolves to 0.15. Model the block as a particle.
A 94 g piece of ice at 0.0°C is placed in an insulated calorimeter of negligible heat capacity containing 100 g of water at 100°C, What is the final temperature of the water once thermal equilibrium is established
when it falls back it hits the ground with speed v1=50m/s. The mass of the ball is m=20g. Illustrate what is the total work done by the drag force while the ball is in the air?
An electric water heater operates at 66 A and 16 kilowatts, Calculate N (the total number of resistors) and the cost of manufacturing the heating element if in a pack of 100 resistors cost $0.50
A little cat, Bella, walks in a straight line, which we shall call the x axis, with positive direction to the right. As an observant scientist, you make measurements of her motion and construct a graph of the little feline's velocity as a function..
A 58-kg skater sliding due northeast at an initial speed of 1.5 m/s runs into a snow bank and comes to rest in a time interval of 0.38 s, What is change in the kinetic energy of the skater
A 87 g arrow is fired from a bow whose string exerts an average force of 105 N on the arrow over a distance of 76 cm. Illustrate what is the speed of the arrow as it leaves the bow?
A 2{rm kg} box rests on a plank that is inclined at an angle of 65 ^circ above the horizontal. The upper end of the box is attached to a spring with a force constant of 390 N/m.
Find out how far from the center of the earth this location is. The mass of the earth is 5.98x10^24 kg. The mass of the moon is 7.35x10^22kg. The mean distance between the moon and the earth is 3.85x10^8 m
2 radio antennas are 100m apart along a north-south line. Theybroadcast identical radio waves at a frequency of3.0MHz, what is the phase difference between the waves at this point
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