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The Flywheel of a steam engine runs with a constant angular velocity of150 rev/min. When steam is shut off, the friction of the bearings and of the air stops the wheel in 2.2 hour.
a) Find the constant angular acceleration, in rev/m2, of the wheel during the slowdown?
b) Obtain how many revolutions does wheel make before stopping?
c) At the instant the flywheel is turning at 75 rev/min, obtain the tangential component of the linear acceleration of a flywheel particle that is 50 centimeter from the axis of rotation?
d) Find the magnitude of the net linear acceleration of the particle in (c)?
A deep-space vehicle moves away from the Earth with a speed of 0.735c. An astronaut on the vehicle measures a time interval of 3.05 s to rotate her body through 1.00 rev as she floats in the vehicle. What time interval is required for this rotation a..
a 3 kg mass attached to a spring oscillates with a period of 0.5 seconds and amplitude of 1/4 meter. find the maximum speed of the mass
A small solid ball is released from rest while fully submerged in a liquid and then its kinetic energy is measured when it has moved 5 cm in the liquid. What is the density of the ball
A glass sphere has radius R = 6.4 cm and index ofrefraction 1.7. A paperweight is constructed by slicing through thesphere along a plane that is 2.0 cm from the center of the sphere,leaving height h = 4.4 cm.
a. find the magnitude of the force required to keep a 280 lb barrel from sliding down a ramp inclined at 12.5 degrees
a 7.0-kg block is at rest on a horizontal floor. if you push horizontally on the 7.0-kg block with a force of 21.0 n it
A satellite with a mass of 310 kg moves in a circular orbit 7.00 107 m above the Earth's surface. What is the gravitational force on the satellite
A point source of light is 145.0 cm below the surface of a body of water. Discover the diameter of the circle at the surface through which light emerges from the water in meters.
water is moving with a speed of 2.3 ms through a perfectly sealed long pipe with a cross sectional area of 5 cm2. the
In a student experiment, a constant-volume gas thermometer is calibrated in liquid nitrogen (?196°C ) and in boiling pentane (36.1°C). The separate pressures are 0.349 atm and 1.442 atm. What value of absolute zero does the calibration yield?
A cell membrane is composed of lipid molecules and approximately 10.48 nm thick. If the dielectric constant of the lipid is k = 5, what is the approximate capacitance of a spherical cell that has a diameter of 10.48 mu m?
What is the average kinetic energy of helium atoms in a region of the solar corona where the temperature is 5.10 ? 105 K
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