Provided following are stages that occurred during the formation of our solar system. Rank these stages from left to right based on when they occurred, from first to last.
What will be an ideal response?
Answer:
large cloud of gas and dust
contraction of solar nebula
condensation of solid particles
accreition of planetesimals
clearing the solar nebula
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Young's Modulus: A steel wire, 3.2 m long, has a diameter of 1.2 mm. The wire stretches 1.6 mm when it bears a load. Young's modulus for steel is 2.0 × 1011 Pa. The mass of the load is closest to
A. 12 kg. B. 16 kg. C. 20 kg. D. 24 kg. E. 28 kg.
The equivalence principle says that a person in an elevator that is in free fall feels the same acceleration as:
A) a person in an elevator going up with an acceleration of g. B) a person in space, far from any gravitational source accelerating at g. C) a person in an elevator going down with an acceleration of g. D) a person in space, far away from any gravitational source with no acceleration. E) a person in orbit of Earth accelerating at g upward.
Which Mars orbiter has been measuring the escape of gases from the Martian atmosphere?
A) Mars Express B) Mars Reconnaissance Orbiter C) Mars Orbiter Mission D) MAVEN
To minimize heat loss it is best that a teapot be
A) black. B) silver. C) depends on size, not color