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A pulley, with a rotational inertia of 3.2×10-3kg m2 about its axleand a radius of 8.0 cm, is acted on by a force applied tangentially at its rim. The force magnitude varies in time as F =0.46t + 0.32t2, where F is in newtons if t is given in seconds. The pulley is initially at rest. At t = 3.4 s what is its angular acceleration? At t=3.4s what is the angular velocity.
A mass attached to a spring experiences a displacement x =3cos(t) + 4sin(t). What is the amplitude of the simple harmonic motion
A covex lens of focal length 10 cm placed 40 cm in front of aconcave lens of focal length 25 cm.A small object is placed 20 cmin front of the convex lens calculate the location of the finalimage relative to the second lens. Include a ray diagram
A resistor with 325? and an inductor are connected in series across an ac source that has voltage amplitude 520V . The rate at which electrical energy is dissipated in the resistor is 234W. What is the amplitude of the voltage across the inductor
A 80.1-kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity of 1.77 rad/s. Find the angular velocity of the platform with its load
A 52 {rm kg} ice skater spins about a vertical axis through her body with her arms horizontally outstretched, making 2.50 turns each second. The distance from one hand to the other is 1.5 {rm m}. Biometric measurements indicate that each hand typi..
Determine the density of the proton.
a wrecking yard inventor wants to pick up cars by charging a 0.400 m diameter ball and inducing an equal and opposite
During a physics experiment, helium gas is cooled to a temperature of 19.0K at a pressure of 0.140 atm. What are the average energy per atom
a single conducting loop of wire has an area of .2 x 10-2 m2 and a resistant of 110o. perpendicular to the plan of the
An electron of mass, m, collides with an atom of mass M. The atom is initially at rest, What is the minimum speed of the electron in order to excite the atom
A reflecting, spherical Christmas tree ornament has a diameter of 6.0 cm. Where is the image located
A circuit consists of a resistor and a capacitor in series with an ac source that supplies an rms voltage of 240 V. What is the average power supplied by the source
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