Blow on your hand with your mouth open. Then do the same with your lips puckered and you'll find
A) a difference in temperatures.
B) the breath from puckered lips is cooler.
C) both of these
D) neither of these
Answer: C
You might also like to view...
The energy released from a nuclear reaction is equal to:
a. energy associated with momentum conservation. b. the exothermic endothermy. c. energy associated with the change in mass. d. the total charge involved.
What does the prefix pico- stand for?
What will be an ideal response?
If the momentum of an electron is 1.95 × 10-27 kg ? m/s, what is its de Broglie wavelength? (h = 6.626 × 10-34 J ? s)
A) 340 nm B) 210 nm C) 170 nm D) 420 nm E) 520 nm
A 10-m plank is being moved by rolling it over two cylindrical logs with a radius of 20 cm, placed 2 m from either end of the plank. As the plank is pushed, the logs roll on the ground without slipping, and they do not slip with respect to the plank
Through what angle will the logs have rotated when the plank has moved 2 m?