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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 fix angular acceleration 0.162 rad/s2. After making 2550 revolutions, its angular speed is 131 rad/s.
(a) Estimate the initial angular velocity of the turbine?
(b) Compute how much time elapses while turbine is speeding up?
The bullet first passes through the left disk and then through the right disk. It is found that the angular displacement between the two bullet holes is θ = 0.320 rad. From these data, evaluate the speed of the bullet.
A 0.20 kg aluminium plate with an initial temperature of 20 degrees c slides down a 15.00m long surface that is inclined at 30 degrees to the horizontal.
(1) A circular wheel has a radius R = 0.45 + or - 0.02 m. The wheel is observed to be rotating uniformly with period T = 2.00 +or- 0.05 s. (i) Compute the frequency with which the wheel spins (ii) Compute the angular speed of the wheel. (iii) Comp..
Which of these systems are made of identical particles? Explain
a point particle with charge q 52 microc is placed at a corner of a cube of edge a 7.8 cm. what is the flux through a
a spherical body of mass m and charge q moves through a viscous medium at a constant speed a q ex under the influence
A person with a near-point distance of 29 cm is able to get a usable magnification of 12 with a particular magnifying glass. What is the friend's near-point distance
The index of refraction for red light in water is 1.331, and thatfor blue light is 1.340. If a ray of white light enters the waterat an angle of incidence of 88.20°, what are the under water angles ofrefraction for the blue and red components of the ..
A 150 ohm resistor is connected in series with a 0.250 H inductor. The voltage across the resistor is VR = 3.80 cos (720t) Volts. Derive an expression for the voltage VL across the inductor
a car starts from rest at a stop sign. it accelerates at 2.0 ms2 for 6.0 seconds coasts for 2.0 s and then slows down
Draw or describe the free body diagram for the vehicle, showing all forces. Calculate these forces and list them with magnitude and direction
A playground merry-go-round (uniform disk with mass M=150kg and radius R=2m) rotates on a frictionless axle through its center. What is the kinetic energy of the child-merry-go-round-system
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