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The balance wheel of a watch oscillates with angular amplitude 0.90? rad and period 0.68 s. Find
(a) the maximum angular speed of the wheel,
(b) the angular speed of the wheel at displacement 0.90?/2 rad, and
(c) the magnitude of the angular acceleration at displacement 0.90?/4 rad.
Calculate Louise's AMT adjustment for circulation expenses for 2011, 2012, 2013, and 2014. Advise Louise on explain how she could reduce or eliminate the AMT adjustment in 2011.
A tuning fork vibrates at a frequency of 530 Hz. An out-of-tune piano string vibrates at 535 Hz. How much time separates successive beats
What is the IMA of the jack.
Once a traffic light turns green, a car speeds up from rest to 50 mi/h with constant acceleration 9 mi/h • s. In the adjoining bike lane, a cyclist speeds up from rest to 20mi/h with constant acceleration 13mi/h.
A straight, stiff wire of length 1.00 m and mass 21g is suspended in a magnetic field B = 0.58T. The wire is connected to an emf. How much current must flow in the wire and in what direction so that the wire is suspended and the tension in the sup..
If the coefficient of static friction is 0.500, what minimum force magnitude is required from the rope to start the crate moving
A bat strikes a 182g ball with a force of 109-N at an angle of 57° above the horizontal. What is the ball's vertical acceleration (positive for upward, negative for downward).
A sealed tank containing seawater to the height of 11.10 m also contains air above the water at a gauge pressure of 3.20 atm. Water flows out from the bottom throughout a small hole.
A child on a freely rotating merry-go-round moves from near the center to the edge. Will the rotational velocity of the merry-go-round increase, decrease, or not change at all? Explain.
Speedboat A negotiates a curve whose radius is 115 m. Speedboat B negotiates a curve whose radius is 194 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
What is the maximum positive potential energy. Write down an expression for U as a function of x, with U in joules and x in meters.
Many chemical reactions release energy. Suppose that at the beginning of a reaction, How much electric potential energy was lost in this reaction (in units of eV)
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