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A disk of radius 40cm is spinning at a constant angular velocity of 30radian/s.
(A) Find the velocity of a point on the rim of the disk.
(B) Find the acceleration of a point on the rim of the disk.
A 300g bird flying along at 5.6 m/s sees a 10 g insect heading straight toward it with a speed of 33 m/s, What is the bird's speed immediately after swallowing
Suppose a spacecraft of mass 28000kg is accelerated to 0.25c, How much kinetic energy would it have
positive freedom is the ability to do what one should do. negative freedom is the ability to do what one should not
A vertical scale on a spring balance reads from 0 to 185N . The scale has a length of 13.0cm from the 0 to 185N reading. what is the mass of the fish
A fire hose 4.19 cm in diameter is capable of spraying water at a velocity of 16.3 m/s. what horizontal force should a fireman exert on the hose to keep it stationary
At point A , 5.0m from a small source of sound that is emitting uniformly in all directions, the intensity level is 56.0 dB, obtain the intensity of the sound
Meanwhile, Isaac is piloting his ship in the westward direction, also at 0.89, toward Albert's ship. With what speed does Isaac see Albert's light beam pass his ship.
A two-slit interference experiment is set up, and the fringes are displayed on a screen. How does the fringe pattern change
A loop of wire in the shape of a rectangle of width 8 cm and length 90 cm and a long, straight wire carrying acurrent I= 5t^1.4-3t^1.8 downward lie on a tabletop; What is the direction of the induced current
Two test charges are located in the x-y plane. If q1 = -2.30 nC and is located at x = 0.00 m, y = 1.040 m and the second test charge has magnitude of q2 = 4.00 nC and is located at x = 1.20 m, y = 0.750 m, calculate the x and y components
An object weighs 302 N in the air. When tied to a string, connected to a balance, and immersed in water, it weighs 220 N. When it is immersed in oil, it weighs 257 N. what is the density of the object.
A 0.500 kg length of copper wire is warmed 30.0°C by the passage of electrical current. How much heat was generated by the current flow
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