A horizontal uniform meter stick supported at the 50-cm mark has a mass of 0.50 kg hanging from it at the 20-cm mark and a 0.30 kg mass hanging from it at the 60-cm mark. Determine the position on the meter stick at which one would hang a third mass of 0.60 kg to keep the meter stick balanced
a. 74 cm
b. 70 cm
c. 65 cm
d. 86 cm
e. 62 cm
B
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Most terrestrial planets have portions of their surface that appear to be significantly older than other portions of their surface. What evidence suggests that the surface of Venus is all of the same age?
a. Photos taken by probes that landed on Venus showed that all of the rocks were of the same age. b. The craters on Venus are randomly distributed in size and number across the surface. c. The volcanoes on Venus are not found in isolated groups, but are scattered around the planet. d. a and b e. all of the above
The most common type of star is a(n) ____
a. white dwarf b. lower-main-sequence star c. upper-main-sequence star d. giant e. supergiant
Rocks solidified from molten material below ground are classified as ______________ igneous rocks
a. extrusive b. intrusive c. superior d. inferior
What is the reason cities buy water rights from farmers? Is this a good or a poor way to address the problems?
What will be an ideal response?