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A door has mass of 44,000 kg. A rotating inertia of 5.7 X 10^5 kg m^2 at the hinge. width is 3.1 m. Minimum force at the outer edge to make it move from rest through 90 degrees in 30 second.
Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 25 cm apart. The sound intensity decreases as the distance between the speakers is increased, reaching zero at a separation of 35 cm.
A chair of mass 11.5kg is sitting on the horizontal floor; the floor is not frictionless. calculate the normal force that the floor exerts on the chair
An F-18 jet fighter flies directly overhead at a height of 18000mat 5/3 the speed of sound. Make a diagram that adequately illustrates thesituation and shows the parameters used to calculate the angle ofthe shock wave.
A boy rolls a ball on a level floor 3.5 meter to another boy. If the ball makes 15.0 revolutions, evaluate what is its diameter
Assume the following situation. The kinetic energy stored in a moving car is found to be 530,895 J. The car has a mass of 884 kg, find the speed of the car
A yo-yo has a mass of 0.604 kilogram, a moment of inertia of 0.01 kgm2, and a string that is 0.592 meter in length. find its angular velocity just before it started up
two wires parallel to each other and seperated by a distance d carry different currents they exert a force with
An instrument utilized for measurement the depth of oceans sends ultrasonic signals to the bottom of the ocean. The signal is received in 0.75 sec after the reflection from the bottom of the ocean.
in this cycle air is first compressed in a piston-cylinder cylinder assembly in an adiabatic process. heat is then
An 85-kg jogger is heading due east at a speed of 1.9 m/s. A 55-kg jogger is heading 24° north of east at a speed of 3.8 m/s. Find the magnitude and direction of the sum of momenta of the two joggers.
A 1.5kg ball and a 3.0kg ball are connected by a 3.0m long rigid, massless rod. What torque will bring the balls to a halt
A bicycle wheel, 65 cm across, is half buried in dirt, standing on edge. What was the beetle's average velocity and speed from the time it started climbing until it hit the ground
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