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Jet fighter planes are launched from aircraft carriers with the aid of their own engines and a catapult. If in the process of being launched from rest, the thrust of a jet's engines is 2.50 x 105 Newton and after moving through a distance of 90 meter the plane lifts off with a kinetic energy of 5.40 x 107 Joule, determine the work done on the jet by the catapult?
A lamp is designed to operate at a temperature of 3100K. what will be the fractional increase in radiant energy
During an adiabatic expansion the temperature of 0.430 moles of argon (Ar) drops from 54 C to 15 C. How much work does the gas do
Two pole-vaulters just clear the bar at the same height. The first lands at a speed of 7.84 m/s, while the second lands at a speed of 8.32 m/s. find the speed at which the second vaulter clears the bar
If an object is 30 cm in front of a convex mirror that has a focal length of 60 m, how far behind the mirror will the image appear to an observer? How tall will the image be?
A 72 kg man in a 5.0 kg chair tilts back so that all the weight isbalanced on two legs of the chair. find the pressure exertedby each leg on the floor
A cyclotron designed to accelerate protons has a magnetic field of magnitude0.260T over a region of radius2.40m. What is the cyclotron frequency?
A rocket of mass kg is in flight. Its thrust is directed at an angle of 60 degrees above the horizontal and has a magnitude of. Find the magnitude and direction of the rockets acceleration.
A cockroach of mass m lies on the rim of a uniform disk of mass 8m that can rotate freely about its center like a merry-go-round. at first the cockroach and disk rotate together with an angular velocity of 0.200 rad/s. Then the cockroach walks half..
A 25.0 kg child on a 2.00 m long swing is released from rest when the ropes of the swing make an angle of 60.0 degrees with the vertical. determine the childs speed at the lowest position
In 2010, the men's record for the 26.22 miles Boston Marathon was 2 hours 5 minutes and 52 seconds. What was the average speed of the runner in units of m/s
a charge of -2.205muc is located at 3.055m 4.501m and a charge of 1.800 muc is located at -2.533m 0.a find the electric
Solar Energy Reaches the earth at the rate of about 1400 watts per sqaure meter of surface perpendicular to the direction of the sun. By how much does the mass of the sun decrease
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