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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.
if one micrometeorite a sphere with a diameter on the order of 1.7 x 10-6 m struck each square meter of the moon each
A 30 cm-diameter vertical cylinder is sealed at the top by a frictionless 15 kg piston. What will the height of the piston be
An asteroid is discovered heading straight toward Earth at 15km/s. An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 min, after which the asteroid is moving at 29degree to its original path at a..
A rifle with a mass of 2.5 kg fires a bullet with a mass of 5.5 g (0.0055 kg). The bullet moves with a muzzle velocity of 330 m/s after the rifle is fired. What is the momentum of the bullet after the rifle is fired
a 2 kg block is pushed from rest on a horizontal friction-less table at an angle of 37 degrees by a force of 15n. find
A cannon ball is shot straight upward with a velocity of 77.50 m/s. What is the maximum height attained by the cannon ball
A hypodermic syringe has a piston area of 0.5 cm^2 and a needle with circular opening of diameter 0.2 mm. What is the gauge pressure in the syringe while pushing the piston with 1 N of force
A small square loop carries a 48A current. The on-axis magnetic field strength 43cm from the loop is 6.8nT
A jogger accelerates from rest to 4.67 m/s in 3.48 s. A car accelerates from 19.0 to 32.7 m/s also in 3.48 s. Find the magnitude of the acceleration of the jogger
A 2.40cm × 2.40cm square loop of wire with resistance 1.10×10?2? has one edge parallel to a long straight wire. calculate the current in the loop
Estimate the wavelength of the light.
Three particles, each with a mass of 0.25 kg, are located at (- 4.0 m, 0), (2.0 m, 0), and (0, 3.0 m) and are acted on by forces, and respectively.
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