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A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually increases, the turbine experiences a constant angular acceleration o f0.100 rad/s2. After making 2854 revolutions, its angular speed is 138 rad/s.
(a) What is the initial angular velocity of the turbine?
(b) How much time elapses while the turbine is speeding up?
A thin 7.3-m metal rod sustanins a longitudinal standing wave with vibration antinodes at each end of the rod. What is the frequency of the rod's vibration
What is the maximum tension. The gastrocnemius muscle, in the back of the leg, has two portions, known as the medial and lateral heads. Assume that they attach to Achilles tendon. The cross-sectional area of each of these two muscles is typically f..
q1. a stone is dropped into a deep canyon and is heard to strike the base 6.8 s after release. how deep is the canyon?
An ostrich lays the largest bird egg. A typical diameter for an ostrich egg at its widest part is 12 cm. What is the tangential speed of that part of the shell
The trustee made distributions of $8,400 to Linda and $16,000 to Lucy. The trust and both beneficiaries are cash basis, calendar year taxpayers. Calculate the trust's accounting income.
A husband and wife take turns pulling their child in a wagon along a horizontal sidewalk. find the magnitude of the pulling force exerted by his wife
A high diver leaves the end of a 5-m-high diving board, and strikes the water 1.3 s later, 3 m beyond the end of the board. determine the velocity with which she enters the water
A 4.9 kg particle and a 2.7 kg particle have a gravitational attraction with a magnitude of 2.6 ? 10-12 N. What is the gravitational potential energy of the two-particle system
A heat engine operates in a Carnot cycle between 84.0°C and 345°C. It absorbs 20,800 J of energy per cycle from the hot reservoir. How much energy does it expel in each cycle by heat
A small telescope has a concave mirror with a 4.00-m radius of curvature for its objective. Its eyepiece is a 4.25-cm focal length lens. What is the angle of its telescopic image?
A tennis player standing 10.2 m from the net hits the ball at 3.60° above the horizontal. To clear the net, the ball must rise at least 0.322 m. how fast was the ball moving when it left the racquet
Two identical aluminium objects are insulated from their surroundings. Object A has a net charge of excess electrons. Object B is grounded. Which object is at the higher potential.
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