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A Bead with a mass 10g can slide without friction on a circular motion massless hoop that is in a vertical plane and has a radius of 5 cm. The hoop rotates at a constant rate of 4rev/s about a vertical diameter.Find
a) the distance from the bead to the axis of rotation in vertical equilibrium;b) the magnitude and direction of the bead's acceleration;c) what work should be done by friction in order to stop the hoop.
josh starts throwing his pitch we assume that his arm moves in a perfect circular arc and his arm is 0.7 m long. if he
What happens to the resistance of copper wire after dunking it in liquid nitrogen? and what happens to the resistance of a carbon resistor when you dunk it in liquid nitrogen.
A thin film of acetone (n = 1.25) coats a thick glass plate (n = 1.50). White light is incident normal to the film. In the reflections, fully destructive interference occurs at 600 nm and fully constructive interference is seen at 700 nm. No other de..
A railroad car of mass 24000 kg is moving with a speed of4.03m/s. It collides and couples with three other coupled railroadcars, each of the same mass as the single car and moving in thesame direction with an initial speed of 2.02m/s.
The Hamiltonian of a system of two (spin- 1/2) electron H= ?1?z1+?2?z2 where ?z is the Pauli Matrix, ? is an energy parameter and our subscripts represent the two electrons 1 and 2. What is the basis where this Hamiltonian is diagonal and what is the..
The speed of the fastest pitched baseball was 45 m/s and the ball's mass was 145g. how many joules of kinetic energy did it have
the engine of a model rocket accelerates the rocket vertically upward for 2.0 s as follows at t 0 the rockets speed is
The famous horse & cart physics scenario is explained. This scenario is used to describe why many people have a common misconception about what Newton’s 3rd Law says & does not say.
The Doppler effect using ultrasonic waves of frequency 2.27×10^6hz is used to monitor the heartbeat of a fetus. calculate the maximum velocity of the surface of the beating heart
A solenoid is made of 302 turns of wire, wrapped around a hollow cylinder of radius 1.25 cm, What is the self-inductance of the solenoid
The longest recorded pass in an NFL game traveled 83 yards in theair from the quarterback to the receiver. Assuming that thepass was thrown at the optimal 45 degree angle, what was the speedat which the ball left the quarterbacks hand?
An incompressible fluid flows steadily through a pipe that has a change in diameter. The fluid speed at a location where the pipe diameter is 8 cm is 1.28 m/s. What is the fluid speed at a location where the diameter has narrowed to 4.00 cm.
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