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An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. The asteroid has amass of 5.7×104 kg, and the force causes itsspeed to change from 7400 to 5900 m/s. (a) What is the work done by the force? (b) If the asteroidslows down over a distance of 1.4×106 m determine the magnitude of the force.
a solid sphere of radius a10cm is concentric with a spherical conducting shell of inner radius b20cm and outer radius
Is the center of the mass of the pendulum-ball system at the center of the ball? If not, where and how is the center of mass located
A heat engine uses a diatomic gas in a Brayton cycle. What is the engine's thermal efficiency if the gas volume is halved during the compression?
Suppose a hanging 1 kg lab mass is attached to a 4.0 kg block on the table. If the coefficient of kinectic friction, mu is 0.20, what is the acceleration of the block.
Two very large parallel plates are oppositesly and uniformly charged. if the field between the plates is 1.7 x 10^6 N/C, How dense is the charge in each plate in muC/m^2
A heat engine operates in a Carnot cycle between 82.0°C and 345°C. It absorbs 20,000 J of energy per cycle from the hot reservoir, What is the mechanical power output of this engine
what is the speed of the proton in the beam.define the spread in these values.
A space traveller weighs herself on Earth, at a location where the acceleration due to gravity is 9.82 m/s2, and finds a value of 599 N. What is the traveller\'s mass on the planet
A Capacitor and resistor are connected in series forming an RC circuit. If the resistance in the circuit is set at 700 OHMS, What amount of the charge is on the capacitor
a carnot refrigerator is operated between two heat reservoirs at temperatures of 320 k and 265 k.if in each cycle the
A 200-m-wide river flows due east at a uniform speed of 4.5m/s. A boat with a speed of 9.0m/s relative to the water leaves the south bank pointed in a direction 28o west of north. How long does it take for the boat to cross the river
a square loop of wire with sides of length 40 cm is in a uniform magnetic field perpendicular to its area if the
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