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A 5.00-N salmon swims 20.0m upstream against a current thatprovides a resistance of 1.50N. This portion of the stream rises atan angle of 10.0 degrees with respect to the horizontal.
a.) Howmuch work is done by the salmon against the current?
b.) What isthe gain in PE by the salmon?
c.) What is the total work that mustbe done by the salmon?
d.) If the salmon takes 40.0s to swim the distance, what power doesit exert in doing so?
In the Bohr model, as it is known today, the electron is imagined to move in a circular orbit about a stationary proton. what would be the corresponding orbital radius
a cross-sectional area of wire so as to produce a steady current of 5.00 mA, How many electrons passed this cross-sectional area in that amount of time
A 7.4- g piece of silver undergoes isochoric heating, By how many joules does the internal energy change
A person fishing from a pier observes that four wave crests pass by in 7.0 s and estimates that the distance between two successive crests is 4.0 m. What is the speed of the wave
A block is suspended from a string connected to a balance. While in air, the scale reads 350 N. What is the buoyancy force on the object when immersed in water
A 2kg hanging block pulls a 3kg block along a very smooth table. Compute for the acceleration of the system and the tension of the cord
For a demonstration, a professor uses a razor blade to cut a thin slit in a piece of aluminum foil, What is the width of the slit
A 2.00m -long, 550g rope pulls a 13.0kg block of ice across a horizontal, frictionless surface. The block accelerates at 2.20m/s2 . How much force pulls forward on (a) the ice, (b) the rope?
Three charged particles are placed at each of three corners of an equilateral triangle whose sides are of length 2.8 . Two of the particles have a negative charge: = -6.7 and = -13.4 . The remaining particle has a positive charge, = 8.0 . What is ..
A multicylinder gasoline engine in an airplane, operating at 2.35 103 rev/min, takes in energy 7.83 103 J and exhausts 4.57 103 J for each revolution of the crankshaft. What is the torque exerted by the crankshaft on the load?
Expand 1.046 mole of an ideal monatomic gas initially at 5.26 kPa and 605 K from initial volume Vi = 1.00 m3 to final volume Vf = 2.00 m3. What is the final pressure of the gas
instructions for ?nding a buried treasure include the following go 304.2 paces at 209? turn to 183? and walk 275 paces
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