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The turbine and associated rotating parts of a jet engine have a total moment of inertia of 29 kg m2. The turbine is accelerated uniformly from rest to an angular speed of 140 rad/s in a time of 32 s.
(a) Find the angular acceleration.(b) Find the net torque required.(c) Find the angle turned through in 32 s.(d) Find the work done by the net torque.(e) Find the kinetic energy of the turbine at the end of the 32 s.
An electron is constrained to the central axis of a ring of charge 1 coulomb and of radius 1 meter. Find the frequency of oscillation of the electron in Hertz
A wire of initial length L0 and radius r0 has a measured resistance of 2.0 . The wire is drawn under tensile stress to a new uniform radius of r = 0.45r0. What is the new resistance of the wire
An object is accelerated by a force. If the force is increased by a factor of 3 and the mass is increased by a factor of 4, by what factor will the acceleration change
A compressed spring shoots the block radically outward along a frictionless groove in the surface of the turntable. Illustrate what is the turntable's rotation angular velocity when the block reaches the outer edge?
Suppose the force acting on a tennis ball (mass 0.040 kg) points in the +x direction and is given by the graph of Fig. 7-30 as a function of time. a) Use a graphical method to estimate the total impulse given the ball.
Green light (555 nm) is normally incident on a pair of slits which are 12mircometers apart. How many interference fringes will there be
When point charges q1 = +2.1 ?C and q2 = +8.1 ?C are brought near each other, each experiences a repulsive force of magnitude 0.66 N. Determine the distance between the charges.
q1. what would be the equilibrium temperature when a 256 g block of copper at 314 degc is placed in a 140 g aluminium
You find an unlabeled box of fine needles, and want to determine how thick they are. What is the diameter of the needle
define the magnitude of the acceleration of the elevator. A 300 kg piano slides 4.1m down a 30 degree incline and is kept from accelerating by the man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction ..
A light plane attains an airspeed of 370 km/h. The pilot sets out for a destination 800 km to the north but discovers that the plane must be headed 10° east of north to fly there directly. What was the j-component of the wind velocity vector
Four equal charges of +4.9×10-6 C are placed on the corners of one face of a cube of edge length 7.0 cm. calculate the magnitude of the force on the charge
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