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Question: Pelicans tuck their wings and free fall straight down when diving for fish. Suppose a pelican starts its dive from a height of 16.0 m and cannot change its path once committed.
Part A: If it takes a fish 0.20 s to perform evasive action, at what minimum height must it spot the pelican to escape? Assume the fish is at the surface of the water.
Please show how you obtained the answer for above question.
The threshold of dark-adapted (scotopic) vision is 6 multiplied by 10-11 W/m2 at a central wavelength of 550 nm. If light with this intensity and wavelength enters the eye when the pupil is open to its maximum diameter of 7.5mm, how many photons p..
A specific engine has a output power of 6.00 kW and an efficiency of 29.0 percent. Suppose the engine expels 8000 Joule of energy in every cycle. Evaluate the energy absorbed in each cycle
What is the distance of closest approach of the two particles? (Assume that the gold nucleus remains stationary
What is the angle of total internal reflection (critical angle) for a glass-to-water interface
a charge of q 1.50e-8 lies on an isolated metal sphere of radius 16.0 cm. with v0 at infinity what is the electric
A ball is launched from the top edge of a building 32.8 m high at a speed of 23.7 m/s at an angle of 15.0 degrees above the horizontal. Find the horizontal distance from the building at which the ball lands
If Jessica can accelerate at a speed of 5-m/s^2, how long will it take for her to reach a speed of 30.0 m/s.
A 4m long wire with thickness 5mm carries a current 0.4 A. A second identical wire of equal length and thickness is parallel and carries 0.6 A in the same direction. The two wires are separated by 12 cm as measured from the outside of the wire.
The froghopper, Philaenus spumarius, holds the world record for insect jumps. When leaping at an angle of 58.0^\circ above the horizontal, some of the tiny critters have reached a maximum height of 52.7cm above the level ground.
A shot-putter accelerates a 7.3kg shot from rest to 17m/s, If this motion takes 1.3s , what average power was developed
A 315-g model boat floats on a pond. The wind on its sail provides a force of 1.6 N that points 20° north of east. The drag force of the water on the boat is 0.65 N, toward the west. If the boat starts from rest and heads east for a distance of 2.7 m..
An electron is orbiting a proton under the Coulomb force in a hydrogen atom at a radius of 0.52 × 10-10 m
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