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Two tugboats pull a disabled super tanker. Each tug exerts a constant force of 2.00×106N, one at an angle 11.0 east of north, and the other at an angle 11.0 west of north, as they pull the tanker a distance 0.890km toward the north. What is the total work done with the two tugboats on the super tanker?
A 5-A current is maintained in a simple circuit that consistsof a resistor between the terminals of an idealbattery. how large is the resistance
A hydrogen atom is in its second excited state, n=3. Find the total energy of the atom
A 82 kg ice hockey player standing on a frictionless sheet ofice throws a bowling ball horizontally with a speed of 2.3m/s. With what speed does the hockey player recoil
Two electric charges q1 = +10 ?C and q2 = -20 ?C are located 0.35 m apart. How much work is required to double the distance between the charges
A certain refrigerator is rated as being 33% as efficient as a Carnot refrigerator. To remove 107 J of heat from the interior at 0 °C and eject it to the outside at 24 °C, how much work must the refrigerator motor do?
Would a plucked guitar sting vibrate for a longer time or a shorter time if the instrument had no sounding board? explain.
consider a piston-cylinder device that contains nitrogen gas as the system. initially the system is at 1 mpa and
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.65 x104 m/s, and the radius of the orbit is5.05 x 106 m. Asecond satellite also has a circular orbit around this same planet. The orbit of this second satell..
1. an aluminum block weighs 12n in air and 8n in water. what is the mass of the block?2. how much energy would it take
A 2.0 kg rock that is originally at rest loses 407j of potential energy while falling to the ground. Compute the kinetic energy that the rock gains while falling. What is the rock speed now before it strikes the ground?
A box of mass M=500 kilogram hangs by a rope from a beam with dimensions a=2.0 meter and b=3.0 meter. find the magnitude of the net force F exerted on the beam by the hinge
For comparison, what is the magnitude of the acceleration a test tube would experience if dropped from a height of 1.0 m and stopped in a 2.0-ms-long encounter with a hard floor
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