The cones in the retina of the eye are

A) most densely packed at the center of vision.
B) uniformly spread along the visual field.
C) concentrated along the periphery of vision.


Answer: A

Physics & Space Science

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A 160 lb person has a mass of 160/32 = 5 slugs. A 160-lb person steps into an elevator and stands on a bathroom scale. Determine the scale reading for the given scenarios. After moving downwards at constant speed, the elevator is slowing down at 2 m/s2 as it is coming to rest

a. 150 lb b. 160 lb c. 170 lb d. none of the above

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Two spheres are cut from a certain uniform rock. One has radius 4.50 cm. The mass of the other is five times greater.

Find its radius.

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In the context of the excitation of atoms, jumps of electrons from one orbit to another are sometimes called__________

A) magnetic jumps B) transitional jumps C) filtered jumps D) quantum jumps

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Thermodynamic Devices: A reversible engine takes in heat at a rate of 555 W and exhausts heat at 482 W.(a) How much power does it produce?(b) What is its efficiency?(c) If operated in reverse as a refrigerator, what would be its performance coefficient (COP)?

What will be an ideal response?

Physics & Space Science