What is the second largest ocean on Earth?
a. Atlantic
b. Indian
c. Antarctic
d. Mediterranean
e. Pacific
a
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Which of the following best describes the greatest known value for index of refraction?
A. 1.732 B. 1.999.... (just shy of 2) C. 2.000... (2 exactly) D. a value greater than 2 but not greater than 3 E. a value greater than 3
NASA uses the famous "Vomit Comet," a KC-135 cargo plane, to provide astronauts and scientiest a simulated zero-gravity environment. The plane flies in a parabolic arc, at the top of which a passenger feels "weightless." This is because
A. the acceleration of the passenger is nearly zero at the top of the arc B. the gravitational force exerted by Earth on the passenger is nearly zero at the top of the arc C. the force exerted by the floor of the plane on the passenger is nearly zero at the top of the arc D. a and b
A wrench is acting on a nut. The length of the wrench lies directly to the east of the nut. A force 150 N acts on the wrench at a position 15.0 cm from the center of the nut in a direction 30.0° north of east
What is the torque about the center of the nut? A) 22.5 N?m B) 11.3 N?m C) 19.5 N?m D) 2250 N?m E) 1949 N?m
Process of Science: Since scientists can't follow the stellar formation process of a single star from start to finish, how do they study solar life cycles?
What will be an ideal response?