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A stone isdropped off a 30m high cliff. How long does it take to reach the ground?
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Question: Suppose you have a block resting on a horizontal smooth surface. the block (mass m) is attached to a horizontak spring (spring constant k) which is fixed at one end. the mass is pulled to one side and released. ...
Question: A stationary boat in the ocean is experiencing waves from a storm. The waves move at 55 km/h and have a wavelength of 160 m. The boat is at a crest of a wave. How much time elapses until the boat is first at th ...
Question: An object is 40 cm in front of a concave mirror with a focal length of 20 cm. Use ray tracing to locate the image. Is the image upright or inverted? The response must be typed, single spaced, must be in times n ...
Question: An old-fashioned single-play vinyl record rotates on a turntable at 38.0rpm . What are (a) the angular velocity in rad/s and (b) the period of the motion? The response must be typed, single spaced, must be in t ...
Question: Suppose the emf generated by a coil rotating in a magnetic field is zero at t=0, and increases to its first peak at t0=0.11ms. A) What is the angular velocity of the coil in rad/s? B) At what time (relative to ...
A mass m is projected vertically upwards at t = 0 from y = 0 with initial velocity v0 > 0 along the y-axis. (+y is upwards) The mass moves under the constant force of gravity, and also a force of air resistance with magn ...
Question: A point source of light illuminates an aperture 2.00 away. A 14.0 -wide bright patch of light appears on a screen 1.00 behind the aperture. How wide is the aperture (in cm)? The response must be typed, single s ...
Question: A regulation table tennis ball has a mass of 2.7g and is 40mm in diameter. What is its moment of inertia about an axis that passes through its center? The response must be typed, single spaced, must be in times ...
Question: A point charge with charge q1 is held stationary at the origin. A second point charge with charge q2moves from the point (x1, 0) to the point (x2, y2). Please use k for Coulomb's constant rather than writing it ...
Question: The position of a 2.75 x 10 5 N training helicopter under test is given by r? = (0.020 m/s3) t3i^ + (2.2m/s)tj^ ?(0.060m/s2)t2k^. Part A: Find the net force on the helicopter at t = 5.0s. Express your answer in ...
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