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The angular speed of a propeller on a boat increases with constantacceleration from 10.9 rad/s to 24.0 rad/s in 2.20 revolutions. What is the acceleration of the propeller?
In a period of 1.4 s, 5.0 1023 nitrogen molecules strike a wall of area 8.9 cm2. find the pressure exerted on the wall
Cosider a series RLC circuit. Thw applied voltage has a maximum value of 160V ans ocscillates at a frq. of 74 Hz. Determine the value of the capacitor
The security alarm on a parked car goes off and produces a frequency of 1200 Hz. The speed of sound is 343 m/s. At what speed are you driving
A 2 liter aluminum cylinder at 5 °C is filled to the brim with gasoline at the same temperature. If the aluminum and gasoline are warmed to 60 °C, how much gasoline spills out.
A whale swims due east for a distance of 1.5 km, turns around and goes due west for 5.7 km, and finally turns around again and heads 4.5 km due east. What is the total distance traveled by the whale
Light from an argon laser strikes a diffraction grating that has 5306 lines per centimeter. Determine the wavelength of the laser light
A current of 17.0 mA passes through a circular cable of 2.0m of circumference. A magnetic field of 0.8T passes parallel to the plane of the "loop". calculate what is the magnetic moment of the loop
A board of mass 20 kg and length 4 m is supported by two scales, one a t the left end of the board, and the other at 3 m from that end. What is the reading on the scale at the left end
In a tape recorder, the magnetic tape moves at a constant linear speed of 5.6 cm/s. What is the angular speed of the take-up spool when it is empty, with radius r1 = 0.64 cm
A hydraulic lift consists of two pistons that connect to each other by an incompressible fluid. If one piston has an area of 0.49 m^2 and the other an area of 6.2m^2, how big a mass can be raised by a force of 220N exerted on the smaller piston.
Under some circumstances, a star can collapse into an extremely dense object made mostly of neutrons and called a neutron star. If the original star rotated once in 35 days, find the angular speed of the neutron star
Two balls are moving in the same direction. Ball A has half the mass of ball B, and is moving at twice its speed. Which ball has greater kinetic energy
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