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A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 2.00 105 N. In being launched from rest it moves through a distance of 87 m and has a kinetic energy of 4.40 107 J at lift-off. What is the work done on the jet by the catapult?
The sun radiates energy at a rate of 3.86*10^26 W. Its radius is 7.0*10^8m. what is the intensity of solar radiation at the top of the earths atmosphere
a 0.5 kg block of aluminum is heated to 200 degrees C. The block is then quickly placed in an air insulated tub of cold water at 0 degrees C and sealed. compute the final temperature of the water and block
A freezer of resistance 9.6 is connected to a 123.3 V source. What is the power delivered when this freezer is on
a rifle with a mass of 2.5 kg fires a bullet with a mass of 0.0045kg. the bullet moves with a muzzle velocity of 350m/s after the rifle is fired
The steel I-beam in the drawing has a weight of 3.51 × 103 N and is being lifted at a constant velocity. What is the tension in each cable attached to its ends
A 0.174kg softball is pitched horizontally at 26m/s. the ball moves in the opposite direction at 38m/s after it is hit by the bat.
Two mass-spring systems have the same mass and the same total energy. The amplitude of system 1 is three-fourths that of system 2. How do their maximum accelerations compare
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 7.70 m/s at an angle of 21.0° below the horizontal. Find the height from which the ball was thrown
A 10 m long conductor is formed into a circle in the xy-plane. Find the magnetic flux through the looped conductor
An atom is ionized so that it has only one electron. When the electron drops from the n = 4 shell to the n = 1 shell, What is the atomic number
A laser used in a holography experiment has an average output power of 4.93 mW. Calculate the energy (in joules) radiated with each pulse
A satellite viewing a surface location under cloud free conditions measures a 12um radiance of 6.2 W m^-2um^-1sr^-1. Compute the brightness temp Tb.
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