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A block mass of 4.00 kg is pulled 13.7 m along a frictionless horizontal table by a constant 15.8 N force direction 43 degrees above the horizontal. Find the work done by the applied force.
an electrical conductor designed to carry large currents has a circular cross section 2.30 in diameter and is 14.9
When a 2.10-kg object is hungvertically on a certain light spring described by Hooke's law, thespring stretches 2.84 cm. What is the force constant of the spring
A parallel-plate capacitor with circular plates of radius 80 mm is being discharged by a current of 7.0 A. At what radius (a) inside and (b) outside the capacitor gap is the magnitude of the induced magnetic field equal to 70% of its maximum value? (..
a chain that can support 2000 n is suspended between two trees. a 200 kg motor hangs from the middle. the slack in the
A 7.55-g bullet from a 9-mm pistol has a velocity of 389.0 m/s. It strikes the 0.745-kg block of a ballistic pendulum, what was the velocity of the bullet as it emerged from the block
question for a certain transverse wave the distance between two successive crests is 1.20 m and eight crests pass a
A simple model of the Earth includes a dense spherical core of radius 4200 km and a less dense spherical shell of thickness 2180 km, determine the rotational kinetic energy of Earth
When two unknown resistors are connected in series with a battery, the battery delivers 235 W and carries a total current of 5.00 A. Determine the values of the two resistors
Sam (85 kg) takes off up a 50-m-high, 10° frictionless slope on his jet-powered skis. The skis have a thrust of 240 N. He keeps his skis tilted at 10° after becoming airborne. How far does Sam land from the base of the cliff.
The crankshaft in a race car goes from rest to 3060rpm in 2.1s. What is the crankshaft's angular acceleration
A bat at rest sends out ultrasonic sound waves at 52.3 kHz and receives them returned from an object moving directly away from it at 29.7 m/s. What is the received sound frequency
A driver traveling at 59 km/h sees a chicken dash out onto the road and slams on the brakes. Accelerating at -7 m/s2, the car stops just in time 24.3 m down the road. What was the driver's reaction time (i.e., the time that elapsed before he engag..
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