Physics

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Which of the following correctly describes the concept of galactic recycling? A) New stars are ... Started by maychende	1 Replies 42 Views	Jul 27, 2018 by aidanmbrowne
What would happen if the Space Shuttle were launched with a speed greater than Earth's escape ... Started by berenicecastro	1 Replies 68 Views	Jul 27, 2018 by al
Suppose we imagine the Sun to be about the size of a grapefruit (about 10 cm across). How far away ... Started by bcretired	1 Replies 76 Views	Jul 27, 2018 by Animal_Goddess
The fact that Voyager 10 continues to speed out of the solar system, even though its rockets have no ... Started by soccerdreamer_17	3 Replies 93 Views	Jul 27, 2018 by ultraflyy23
Which of the following best describes the Milky Way Galaxy? A) a spiral galaxy with a disk about ... Started by storky111	1 Replies 94 Views	Jul 27, 2018 by bookworm410
On the scale of the cosmic calendar, in which the history of the universe is compressed to 1 year, ... Started by altibaby	1 Replies 50 Views	Jul 27, 2018 by millet
Approximately how fast is a person located at the Earth's equator traveling due to the rotation of ... Started by ahriuashd	1 Replies 68 Views	Jul 27, 2018 by bblaney
How long does it take our solar system to complete one orbit around the Milky Way Galaxy? A) 100 ... Started by altibaby	3 Replies 134 Views	Jul 27, 2018 by tranoy
The three principal sources of the internal heat of terrestrial planets are A) accretion, ... Started by ghost!	1 Replies 96 Views	Jul 27, 2018 by Qarqy
Where does the energy come from that your body uses to keep you alive? A) It comes from the foods ... Started by sammy	1 Replies 65 Views	Jul 27, 2018 by tennis14576
Which of the terrestrial worlds has the strongest magnetic field? A) the Moon B) Mercury C) Earth ... Started by mspears3	1 Replies 119 Views	Jul 27, 2018 by isabelt_18
Most of the mass in the Milky Way Galaxy is located A) in the gas and dust. B) in the halo ... Started by asd123	3 Replies 127 Views	Jul 27, 2018 by yuyiding
Which of the following has virtually no effect on the internal structure of a planet? A) its size ... Started by bcretired	1 Replies 93 Views	Jul 27, 2018 by Chou
How many seconds are in one year? (Calculate this, do not look it up.) A) about 86 thousand ... Started by cherise1989	1 Replies 48 Views	Jul 27, 2018 by ricroger
How deep is an impact crater compared to its width? A) 1-10 B) 50-100 C) 30-40 D) 10-20 E) ... Started by naturalchemist	1 Replies 95 Views	Jul 27, 2018 by wtf444
The relatively few craters that we see within the lunar maria A) were formed by impacts that ... Started by panfilo	3 Replies 176 Views	Jul 27, 2018 by Leostella20
What did Carl Sagan mean when he said that we are all star stuff? A) that the Earth formed at the ... Started by lindiwe	1 Replies 78 Views	Jul 27, 2018 by Silverbeard98
One light-hour is the distance light travels in one hour. The speed of light is about 300,000 km/s . ... Started by ahriuashd	1 Replies 286 Views	Jul 27, 2018 by courtney_bruh
What can trigger the gravitational collapse of an interstellar gas cloud? A) a decrease in ... Started by HCHenry	1 Replies 83 Views	Jul 27, 2018 by alexisweber49
One light-year is the distance light travels in one year. The speed of light is about 300,000 km/s . ... Started by SAVANNAHHOOPER23	3 Replies 307 Views	Jul 27, 2018 by dawsa925
What is the diameter of the galaxy, in km? A) about 1 billion trillion km (1021 km) B) about 10 ... Started by xclash	1 Replies 52 Views	Jul 27, 2018 by Eazy416
Which of the following describes erosion? A) the excavation of bowl-shaped depressions by ... Started by meagbuch	1 Replies 125 Views	Jul 27, 2018 by kristenb95
0 degrees Kelvin is A) meaningless, a temperature outside the range defined for the Kelvin scale. ... Started by bb	1 Replies 825 Views	Jul 27, 2018 by wilsonbho
Which of the following describes volcanism? A) the excavation of bowl-shaped depressions by ... Started by vicotolentino	3 Replies 129 Views	Jul 27, 2018 by beccamahon
Which of the following describes impact cratering? A) the excavation of bowl-shaped depressions ... Started by dmcintosh	1 Replies 91 Views	Jul 27, 2018 by sarahccccc