A "supermoon" is when the Moon is larger in the sky because it is closer to Earth in its elliptical orbit. This point is called ________________?
a. aphelion b. perihelion
c. apogee d. perigee
c
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4.00 moles of a monatomic ideal gas at a temperature of 340 K are compressed adiabatically from an initial volume of 70.0 L to a final volume of 30.0 L. What is the final pressure in the gas?
A) 663 kPa B) 581 kPa C) 106 kPa D) 42.1 MPa E) 2.17 MPa
A fish appears to be 2.00 m below the surface of a pond when viewed almost directly above by a fisherman. What is the actual depth of the fish? (nwater = 1.33)
A) 2.66 m B) 0.67 m C) 1.5 m D) 0.38 m
A girl is sitting on the edge of a pier with her legs dangling over the water. Her soles are 80.0 cm above the surface of the water. A boy in the water looks up at her feet and wants to touch them with a reed. (nwater = 1.333.) He will see her soles as being
a. right at the water surface. b. 53.3 cm above the water surface. c. exactly 80.0 cm above the water surface. d. 107 cm above the water surface. e. an infinite distance above the water surface.
Vision Problems: A farsighted person cannot see clearly objects that are closer to her eyes than 60.0 cm. Which one of the following combinations represents the correct focal length and the refractive power of the contact lenses that will enable her to comfortably see the objects at a distance of 25.0 cm from her eyes?
A. -42.9 cm, +2.33 diopters B. -42.9 cm, -2.33 diopters C. +42.9 cm, +2.33 diopters D. +42.9 cm, -2.33 diopters E. +60 cm, +42.9 diopters