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A wheel, mass 30 kg, radius of gyration 420 mm, spins freely at 1600 RPM. Frictional torque is 2.3 Nm. Using both force and energy methods, determine the number of revolutions made by the wheel in coming to rest. Also determine the time taken (in minutes).
A weather balloon contains 12 m3 of hydrogen gas when it is released from a location at which the temperature is 22°C and the pressure is 101 kPa. evaluate the new volume of the balloon
The flywheel of a steam engine runs with a constant angular speed of 116 rev/min. What is the magnitude of the constant angular acceleration of the wheel
Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 60.0?. Dog A exerts a force of 272N , and dog B exerts a force of 346N. Find the magnitude of the resultant force
Develop a relationship which will the give the gravity field of a planet at any point beneath its surface which is distance r from the center.
Calculate the currents in each resistor of the figure. Calculate the current in 25Ω resistor. Calculate the current in 120Ω resistor.
Using the electric field described in the alpha cannon simulation, suppose that an alpha particle is fired upward from a height y = 0 m, What is the horizontal distance traveled by the particle
An AC generator has 80 rectangular loops on its armature. Each loop is 11 cm long and 10 cm wide. calculate the maximum output voltage of this generator
an office copier uses a lens to place an image of a document onto a rotating drum. the copy is made from this image. a
Two identical cars, one stationary and the other driving toward the stationary one at 45 m/s, what is the beat frequency each driver hears
In lacrosse, a ball is thrown from a net on the end of a stick by rotating the stick and forearm about the elbow. What is the velocity of the ball
A science student is riding on a flatcar of a train traveling along a straight, horizontal track at a constant speed of 12 m/s. How high does he see the ball rise
In 2000, NASA placed a satellite in orbit around an asteroid. Consider a spherical asteroid with a mass of 8.00×1015 and a radius of 8.10. What is the escape speed from the asteroid
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