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A river is flowing with a constant speed of 2.00 km/h. A swimmer starts at a dock, swims upstream to another dock that is 550 m away, and then swims downstream back to the dock at which she started. If the swimmer can manage to swim a constant 5.00 km/h relative to the water, how long does her round trip take?
A copper wire, whose cross-sectional area is 5.22 x 10-6 m2, has a linear density of 5.86 x 10-3 kg/m and is strung between two walls. At the ambient temperature, a transverse wave travels with a speed of 43.1 m/s on this wire. The coefficient of ..
In the system shown in the figure, suppose the block has a mass of 3.3 , the spring has a force constant of 450 , and the coefficient of kinetic friction between the block and the floor is 0.19. Find the work done on the block by the spring
A 4.50{kg} ornament is hanging by a 1.00{m} wire when it is suddenly hit by a 3.00kg missile traveling horizontally at 12.0{m}/{s} . The missile embeds itself in the ornament during the collision.
Find out the magnitude of the amount by which the potential difference across the plates changes.
The electric potential in a certain region is given by the equation V(x,y,z) = 3?x2y3 - 2?x2y4z2, Calculate the magnitude of the electric field at the point (x1,y1,z1) = (-5.0, 2.0, 1.5) m in units of N/C
Steam enters a turbine at 1240 ?C and is exhausted at 82 ?C. What is the maximum eficiency of this turbine
Three people pull simultaneously on a stubborn donkey. Jack pulls directly ahead of the donkey with a force of 81.7 N, Find the magnitude of the net force the people exert on the donkey
A uniform diving board, of length 5.21 m and mass 50.4 kg, is supported at two points; What is the force acting on the board due to the right support when a diver of mass 62.9 kg stands at the end of the board over the water
Four equal positive point charges, each of charge 5.7?C , are at the corners of a square of side 9.2 cm. What charge should be placed at the center of the square
Jupiter has a radius of 71,492km and a mass of 1.9x10^27 kg. Jupiter's moon has a mass of 9x10^22kg and orbits at a distance of 422x10^3km
Charge Q = 10E-8 C is placed in the origin. Location A is -3.00m from the charge while location B is 2.00m from the charge. Which point is at the higher potential
A swimmer looks upward from the bottom of a 3.5-m-deep swimming pool. How far from the swimmer does the board appear to be
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