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A halfback is initially running south at a speed of 9.90 m/s, quickly cuts to his right, and 0.505 s later is running 60.0° west of south at 9.10 m/s. Find his average acceleration and direction north of west.
A thin, uniform rod is hinged at its midpoint. To begin with, one-half of the rod is bent upward and is perpendicular to the other half. What is the angular velocity of the straight rod
how far did the last car travel before momentarily coming to a rest. A 3 kg block accelerates at a rate twice that of a 6 kg block. Is the net force acting on the 3kg block twice as large as that acting on 6kg block.
A weather vane initially at rest has a moment of inertia of 0.104 kg · m2 about its axis of rotation. Find the angular velocity of the weather vane just after it is struck
A 25-? resistance is connected in series with a 30-mH inductance and a 12-µF capacitor, obtain the power dissipated in the circuit
An airplane wishes to fly from new york to ottawa. from new york, ottawa is located 780km West23degreesNorth. there is a wind blowing from a bearing of 310 degrees and if the plane flies at 890km/h, what bearing should the pilot steer to fly direc..
A student sitting on a frictionless rotating stool has rotational inertia 0.92kg?m2 about a vertical axis through her center of mass, Ignoring her arm mass, what's her new rotational velocity
If it takes 2.25 minutes to heat water in a 250 gm copper kettle from 20 °C to 85 °C, using a 700 W burner, how much water must be in the kettle
An airplane traveling at 480 km/h needs to reverse its course. The pilot decides to accomplish this by banking the wings at an angle of 38o. Find the time needed to reverse course
A 690-kg elevator starts from rest and moves upward for 3.50 s with constant acceleration until it reaches its cruising speed, 1.85 m/s. What is the average power of the elevator motor during this period
A wire is formed into a circle having a diameter of 10.2 cm and is placed in a uniform magnetic field of 3.19 mT, Find the maximum torque on the wire
Calculate the force exerted on a rocket, given that the propelling gases are expelled at a rate of 1400kg/s with a speed of 7.1×104m/s
A 6.03-g bullet is moving horizontally with a velocity of +342 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). What is the velocity of the second block after the bullet imbeds itself
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