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Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.90×10^6 N, one at an angle 17.0 degrees west of north, and the other at an angle 17.0 degrees east of north, as they pull the tanker a distance 0.700km toward the north.
What is the total work done by the two tugboats on the supertanker?
An electron is released in a region where there is a varying electric potential. Will the electron move toward the lower potential region or the higher potential region
A sled weighs 10.0 kg. It is held in place on a frictionless 20.0-degree slope by a rope attached to a stake at the top of the slope. Find the tension in the rope if it is parallel to the slope
A closed auditorium of volume 25700 m3 is filled with 2050 people at the beginning of a show, and the air in the space is at a temperature of 291 K and a pressure of 1.013·10^5 Pa. by how much would the temperature (in K) of the air rise
A long coaxial cable length of L consists of a cylindrical metal sheath of radioys b surrounding a solid conducting wire with radious a. defining voltage to be zero at infinity
A superhero flies 272m from the top of a tall building at an angle of 32 below the horizontal. What is the vertical component of the superhero's displacement.
Power transmission lines often use a form of electric current called alternating current, but in many regions, such as the Province of Quebec, high-voltage direct-current lines are used instead, What is the power loss due to resistance in the line
An aluminum rod of length l has a resistance of .8 ohms. Half of the rod is machined down so that half of the rod now has half of the radius of the original radius. What will be the new resistance
Two long, parallel conductors carry currents I1 = 3.00 A and I2 = 2.50 A, both directed into the plane of the computer screen. Determine the magnitude and direction of the resultant magnetic field at P.
A 63 kg girl weighs herself by standing on a scale in an elevator. What is the force exerted by the scale while the elevator is descending at a constant speed of 10.0 m/s.
In alpha decay, an alpha particle (a helium nucleus consisting of two protons and two neutrons) escapes from a heavy nucleus, find the initial electric potential energy of the alpha particle
Five kilograms of liquid carbon tetrachloride undergo a mechanically reversible, isobaric change of state at 1 bar during which the temperature change from 0 C to 20 C.
A 1.5 {rm kg} block rests on top of a 7.5 {rm kg} block. The cord and pulley have negligible mass, and there is no significant friction anywhere. What force F should be applied to bottom block so the top block accelerates to the right at 2.60 m/s^..
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