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A jet plane starts from rest on the runway and accelerates for takeoff at 2.30 m/s^2 ( = 7.55 ft/s^2). It has two jet engines, each of which exerts a thrust of 1.40 X 10^5 N (= 15.7 tons). Determine what is the weight of the plane?
A bat at rest sends out ultrasonic sound waves at 50,000 Hz and receives them returned from an object moving directly away from it at 33.0 m/s. What is the received sound frequency
A high-pressure gas cylinder contains 40.0 L of toxic gas at a pressure of 1.70 ? 107 N/m2 and a temperature of 18.0°C. What is the final pressure in the tank, assuming a negligible amount of gas leaks while being cooled
the relatively high resistivity of dry skin about 1 x 106 ohms - m can safely limit the flow of current into deeper
In the old west, a marshal riding on a train traveling 50 m/s seesa duel between two men standing on the Earth 50 m apart parallel tothe train. Who was struck first
The electric potential at x = 3.0 m is 120 V, and the electric potential at x = 5.0 m is 190 V. What is the electric field in this region, assuming it's constant? -140 N/C 140 N/C -35 N/C 35 N/C 75 N/C.
While messing around with billiard balls, you roll the 8-ball into another ball of the same mass and initially at rest. After the collision, Find the original speed of the cue ball
Suppose a monatomic ideal gas is contained within a verticalcylinder that is fitted with a movable piston. Through what distance does the piston drop
An astronaut is being tested in a centrifuge. The centrifuge has a radius of 9.6 m and, in starting, rotates according to ? = 0.34t^2, find the magnitudes of the astronaut's angular velocity
Two cylindrical rods have the same mass. One is made of silver (density = 10 500 kg/m3), What is the ratio (silver-to-iron) of the lengths
An ideal gas is brought through an isothermal compression process, what are the temperature T of the gas and the final pressure, Pf
A pencil is held perpendicular to the optical axis of a concave spherical mirror. The pencil is 91 cm from the center of the mirror, What is the magnification of the pencil's image
A cube of ice is taken from the freezer at -8.0 and placed in a 113 aluminium calorimeter filled with 306 of water at room temperature of 20.0. The final situation is observed to be all water at 15.0.
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