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The angular displacement of a rotating wheel is given by theta=18t^2+3t-2+(12/t^3). Find the angular acceleration and angular velocity.
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You throw two balls of equal masses ( m =0.992 kg) vertically upward at an interval of Δ t = 1.41 seconds with the same initial speed of v i=35.3 m/s from the same height. At what height will they collide, measured rel ...
A hiker measures the angle of elevation to the top of a cliff as 16.0o. She walks 1.20 km further away from the cliff on level ground, she finds the angle to be 11.0 o. a) Draw a diagram of the problem - you may ignore t ...
Problem: The orbital speed of the Sun relative to the center of the Milky Way is about 250 km/s. By what fraction do the relativistic and Newtonian values differ for (a) the Sun's momentum and (b) the Sun's kinetic energ ...
Question: An object of mass m attached to a spring of force constant k oscillates with simple harmonic motion. The maximum displacement from equilibrium is A and the total mechanical energy of the system is E. What is th ...
Question: A superball with mass m equal to 50 grams is dropped from a height of hi = 1.5 m . It collides with a table, then bounces up to a height of hf= 1.0m. The duration of the collision (the time during which the sup ...
Question: Part A: Calculate the period of a satellite orbiting the Moon, 91km above the Moon's surface. Ignore effects of the Earth. The radius of the Moon is 1740 km. Express your answer using three significant figures ...
Question: Why does a satellite in a circular orbit travel at a constant speed? a. There is no component of force acting along the direction of motion of the satellite. b. The net force acting on the satellite is zero. c. ...
Question: A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235m below. If the plane is traveling horizontally with a speed of 250 km/h (69.4 m/s), (a) how far in advance of the recipie ...
Question: A parallel-plate air capacitor has a capacitance of 920 pF. The charge on each plate is 3.90 μC. A) What is the potential difference between the plates? Express your answer in kV. B) If the charge is kept cons ...
Question: (a) Is the magnetic field created by a current loop uniform?Explain. (b) Does a wire connected to the terminals of abattery emit electromagnetic waves? Explain. (c) Why do astronomers looking at distant galaxie ...
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