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A 40-N crate starting at rest slides down a rough 6.0-M long ramp, inclined at 25 degrees with the horizontal. 30J of energy is lost to friction. What will be the speed of the crate at the bottom of the incline?
A uniformly charged sphere has a potential on its surface of 460 V. At a radial distance of 24 cm from this surface, the potential is 190 V. What is the radius of the sphere
A certain airplane has a speed of 250.0 km/h and is diving at an angle of 30.0° below the horizontal when the pilot releases a radar decoy. The horizontal distance between the release point and the point where the decoy strikes the ground is 700 m..
A disk, initially rotating at 106 rad/s, is slowed down with a constant angular acceleration of magnitude 2.24 rad/s2. How much time does the disk take to stop
The potential difference between the accelerating plates of a TVset is about 30 kV. If the distancebetween the plates is 1.0 cm, find the magnitude of the uniform electric field in the region between the plates.
In a series L-R-C circuit, the components have the following values: = 21.5 , = 165 , and = 400 . The generator has an rms voltage of 120 and a frequency of 1.25 .Determine the average power supplied by the generator. Determine the average power diss..
A cardiac pacemaker can be affected by a static magneticfield as small as 1.7 mT. How close can a pacemaker wearer come toa long, straight wire carrying 18 A?
1. a 2.0-m rope is lying on a table. you pick up one end and start raising it. how high above the table is the center
A 300 hp car engine can deliver that maximum power at 6000 rpm. What is the engine's torque at that speed
q 1. the highest musical note on a piano has a frequency of 4286 hz. why would a tape of piano music sound terrible if
Two steel guitar strings have the same length. String A has a diameter of 0.55 and is under 440.0 of tension. Find the ratio of the wave speeds in these two strings
Two Skaters collide and hold on to each other on a frictionless floor. find direction of the velocity of these skaters after the collision
A thin steel beam 8.0 m long is suspended from a crane and is undergoing tensional oscillations. Two75 kg steelworkers leap onto opposite ends of the beam, as shown in Fig. 13.29. If the frequency of torsionaloscillations diminishes by 30%, what is t..
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