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A 475 kg concrete beam should be raised by a 10.0 m from the ground. How much power is needed to do the job in 24 s?
The velocity of a 621-kg auto is changed from 10.0 m/s to 44.0 m/s in 70.2 s by an external, constant force. What is the resulting change in momentum of the car
W hat is the velocity of the gasoline in the tube
The diagram below shows a block (B) resting in equilibrium on a spring of stiffness k [N/m] and damper of damping constant c [Ns/m]. What is the steady-state deflection d of the system
A grindstone of a radius 4 m is firstly spinning with a radius of 8 rad/s. The angular speed is then increased to 12 rad/s over next 4.0 seconds. Suppose that the angular acceleration is constant. What is the average angular speed of grindstone.
A concave mirrior is to form an image of the filament of a headlight lamp on a screen 8.00 m from the mirrior. The filament is 6.00 mm tall, Is the image upright or inverted
A pencil, 15.7 cm long, is released from a vertical position with the eraser end resting on a table. What is the angular speed of the pencil
A woman holds a tube of lipstick 5.7 cm from a spherical mirror and notices that the image of the tube is upright and one eighth its normal size. Determine the position of the image. Is it in front of or behind the mirror
A sample containing beryllium (atomic mass 9 u), aluminum (27 u), and an unknown element is placed in a mass spectrometer. What is the mass of the unknown element
A jet airplane is in level flight. The mass of the airplane is m = 8830 kg. find the magnitude of the lift force acting on the plane
Two satellites, A and B, are in different circular orbits about the earth. The orbital speed of satellite A is thirty-six times that of satellite B
The first controlled, sustained flight in a heavier-than-air craft was made by Orville Wright on December 17, 1903. The plane took off at the end of a rail that was 60 feet long, and landed 12 seconds later, 180 feet away from the beginning of the..
A projectile of mass 0.950 kg is shot straight up with an initial speed of 24.0 m/s, If the projectile rises to a maximum height of only 19.7 m, determine the magnitude of the average force due to air resistance
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