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A 55.0 kg ice skater is moving at 4.00 m/s when she grabs theloose end on a rope, the opposite end of which is tied to a pole. She then moves in a circle of radius 0.800 m around the pole
a) Determine the force exerted by the horizontal rope on her arms.
b) Compare this force with her weight.
In a mass spectrometer, a singly, negative charged ion having a particular velocity selected by using a magnetic field of .10 T perpendicular to an electric field of 1000 V/m. What is the mass of the ion
A uniform solid sphere of radius 0.503 m and mass 15.7 kg turns counter clockwise (when viewed from above) about the vertical axis through its center. Find its vector angular momentum when its angular speed is 3.08 rad/s. Wouldn't you use the formula..
A subway train starts from rest at a station and accelerates at a rate of 1.56m/s2 for 13.7s, Find the total distance covered
A damped mass-spring system oscillates at 265 -Hz. The time constant of the system is 2.0 s. At t = 0, the amplitude of oscillation is 6.1 cm and the energy of the oscillating system is then 61.00 J.
q1. the red giant betelgeuse has the surface temperature of 4000 rm k and is 500 times the diameter of our sun. if our
A UFO streaks across the sky at a speed of 0.90c relative to the earth. What length does the person measure for the UFO when it lands
If 1800J of heat are added to a 190-g object, its temperature increases by 10o C. What is the heat capacity of this object
A weight lifter raises a 972 N weight a vertical distance of 1.87 m. Compute the work done by the force exerted on the weight by the weight lifter
Find the charge-to-mass ratio of an unknown point charge that is repelled strongly enough from a single electron to be suspended motionless against its own weight
1.collect 10 resources other than your textbook from popular science magazines including discover scientific american
The Concorde is 62 m long when its temperature is 23°C. In flight, the outer skin of this supersonic aircraft can reach 106°C due to air friction. Find the amount by which the Concorde expands
A comet has a very elliptical orbit with a period of 121.0 y. what is its greatest distance from the Sun
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