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A large shoal of krill rises to the surface of the ocean. This provokes a feeding frenzy. A pod of dolphins swim towards the shoal from the south with a speed of 3.22 m/s. A flock of pelicans flies towards the shoal from the north with a speed of 25.4 m/s. A school of anchovy meanwhile approaches the shoal from the east with a speed of 0.622 m/s.
What is the relative speed of the pelicans as measured by the dolphins?
The water is 186 cm deep and the bottom of the pool is a large mirror. Where is the image of the light bulb when viewed from near normal incidence
A 78.3?kg bungee jumper is enjoying an afternoon of jumps. The jumper's first oscillation has an amplitude of 10.3m and a period of 4.75s. find the spring constant of the bungee cord
An infinitely long conducting cylindrical rod of radius1.73mm is surrounded by an infinitely long conducting cylindrical shell with an inner radius 3.21mm , and an outer radius 6.98mm . The figure gives you an idea of what it looks like. What is t..
As a bacterium swims through water it propels itself with its flagella so as to overcome the frictional drag forces and move at, more or less, constant velocity of 100 micrometers/s for periods of time. If the frictional drag force on a bacterium is ..
By what percentage does the density of a bowling ball change (assuming it is a uniform sphere) when it is taken from room temperature (68 µF) into the cold night air in Nome, Alaska (-40 µF)
A transverse wave on a string is described by the following equation, where x is in meters and t is in seconds. y = (0.130 m) sin ?(x/8 + 5t), What is its speed of propagation
A piece of metal is released under water. The volume of the metal is 37.0 cm3 and its specific gravity is 4.7. What is its initial acceleration
A rubber ball of mass 24.5 g is dropped from a height of 2.05 m onto a floor. The velocity of the ball is reversed by the collision with the floor,and the ball rebounds to a height of 1.30m. What impulse was applied to the ball during the collision?
A small steel ball bearing with a mass of 20.0 gram is on a short compressed spring. Find the horizontal distance the ball would travel
Identify and compare at least four to five factors (cost, shelf life, weather, etc.) that impact transportation needs. Determine appropriate logistics methods in various scenarios (local, out-of-state, regional, coast-to-coast, and global)
Work of 2 Joules is done in stretching a spring from its natural length to 17 cm beyond its natural length. What is the force (in Newton's) that holds the spring stretched at the same distance (17 cm)
A hoodlum throws a stone vertically downward with an initial speed v0 from the roof of a building, a height h above the ground. How long does it take the stone to reach the ground
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