If you are facing north with the Sun directly overhead, the light coming to your eyes from the sky just above the horizon is

A. partially polarized east-west.
B. partially polarized north-south.
C. randomly polarized.
D. partially polarized up-down.


A. partially polarized east-west.

Physics & Space Science

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A spaceship with a mass of 20,000 kg is traveling in a straight line at a constant speed of 300 km/s in deep space. Its rockets engines must be: (A) off or (B) firing?

A. off B. firing

Physics & Space Science

A negative magnification for a mirror means

A) the image is inverted, and the mirror is concave. B) the image is inverted, and the mirror is convex. C) the image is inverted, and the mirror may be concave or convex. D) the image is upright, and the mirror may be concave or convex. E) the image is upright, and the mirror is convex.

Physics & Space Science

Contrast the Oort cloud and the Kuiper belt as possible origins for comets

What will be an ideal response?

Physics & Space Science

What is the equivalent resistance between points A and B in the figure when R = 18 ??



a.
48 ?

b.
64 ?

c.
80 ?

d.
96 ?

e.
110 ?

Physics & Space Science