What is the visible surface of the Sun called?

A. the radiative zone
B. the chromosphere
C. the photosphere
D. the corona


Answer: C

Physics & Space Science

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____________________ are great lava flows covering 17% of the lunar surface

Fill in the blank(s) with correct word

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From the South Pole, Polaris would appear directly overhead

Indicate whether the statement is true or false

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Which of the following diagrams shows the greatest magnitude net torque with a zero net force? All the rods, of length 2r, rotate about an axis that is perpendicular to the rod and fixed in the center of the rod. All the forces are of magnitude F or 2F and all distances from the axis are r or r/2

a.

b.

Physics & Space Science

A mass is suspended from a string in an airplane. As the plane is in the process of taking off, it is found that the string, instead of being vertical, hangs at an angle of 13° from the vertical. What is the acceleration of the plane at this time?

a. 2.3 m/s2 c. 9.1 m/s2 b. 3.8 m/s2 d. 3.5 m/s2

Physics & Space Science