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The flywheel of a steam engine runs with a constant angular speedof 150 rev/min. When steam is shut off,the friction of the bearings stops the wheel in 2.7 h.
a) What is the constant angular acceleration,in revolutions per minute-squared, of the wheel during theslowdown?
b) How many rotations does the wheel make before stopping?
c) At the instant the flywheel is turning at 75 rev/min, what isthe tangential component of the linear acceleration of a flywheelparticle that is 50 cm from the axis of rotation?
d) What is the magnitude of the net linear acceleration of theparticle in (c)?
When at rest a proton experiences a net electro magnetic force of magnitude 8.8 multiplied by 10-13 N pointing in the positivex direction. When the proton moves with a speed of1.4 multiplied by 106 m/s in the positivey direction the net electromagnet..
A source of sound waves of frequency 0.4 kHz is stationary. What is the observed frequency if the observer moves toward the source
Suppose you slowly, and at constant speed, lift a book of mass of 1 kg from the floor to a shelf 2 m above the floor. What is the workd by you done on the book
an elevator is moving downward when someone presses the emergency stop button. the elevator comes to rest a short time
A pitcher throws a 0.140 kg baseball, and it approaches the bat at a speed of 35.0 m/s. The bat does Wnc = 75.0 J of work on the ball in hitting it. find the speed of the ball after the ball leaves the bat
The length of the ice block is L1 = 0.00484 m and its temperature is T1 = -11.0 °C. The aluminum block is L2 = 0.00139 m long, Calculate the heat per second per square meter
When a resistor is connected across the terminals of an acgenerator (107 V) that has a fixedfrequency, there is a current of 0.495 Ain the resistor. When an inductor is connected across the terminals of this same generator, there is a current of 0..
suppose the original experiment is done on the Moon, where g, the acceleration due to gravity, how will the graph compare to the original graph
The person in Figure P5.35 weighs 165 lb. As seen from the front, each light crutch makes an angle of 24.0° with the vertical. Determine the magnitude of the compression force in each crutch
A flashlight on the bottom of a 4-m deep swimming pool sends a ray upward and at an angle so that the ray strikes the surface of the water 1.70-m from the point directly above the flashlight. What angle (in air) does the emerging ray make with wat..
Starting from the top left corner and moving clockwise the charges are -10 uC, -10 uC, 5 uC, and 5 uC. What is the electric field at the center of the square array of charges
You cool a 130.0g slug of red-hot iron (temperature 745 ?C) by dropping it into an insulated cup of negligible mass containing 70.0g of water at 20.0 ?C. What is the final mass of the iron and the remaining water
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