An effective way to passively cool a house is to _______

a. open all the windows
b. use a light colored roofing material
c. use concentrating collectors to provide air conditioning
d. add more insulation on the south side of the house
e. use thermal storage mass


b

Physics & Space Science

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That the Moon has no magnetic field implies that

a. the Moon is spinning too slowly to produce a magnetic field. b. the interior of the Moon is too hot to produce a magnetic field. c. the crust of the Moon is so thick that the magnetic field cannot get out of the interior. d. the Moon's core contains little if any molten iron. e. the Moon is moving further from Earth.

Physics & Space Science

The ________ Belt bodies orbit beyond Neptune, but like the planets stay close to the ecliptic plane and in fairly circular orbits

Fill in the blank(s) with correct word

Physics & Space Science

Ultrasonic sound that travels at 1530 m/s in ocean water is bounced off the ocean floor and returns to the ship above. If the round trip takes 3 s, the depth of the water is

A) 1530 m. B) 2295 m. C) 3060 m. D) 4590 m.

Physics & Space Science

Identical point charges (+50 ?C) are placed at the corners of a square with sides of 2.0-m length. How much external energy is required to bring a fifth identical charge from infinity to the geometric center of the square?

a. 41 J b. 16 J c. 64 J d. 10 J e. 80 J

Physics & Space Science