3 Question 1 (1 point)
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The paths of the planets across the celestial sphere are very close to the ecliptic,
because:

the planets take one year to orbit the Sun.

the planets are fixed in the sky on the ecliptic.
the planets all orbit in almost the same plane.

An ideal polarizer with its transmission axis rotated 30 degrees to the vertical is placed in a beam of unpolarized light of intensity 10w/m^2. after passing through the polarizer, what is the intensity of the beam? a. 8.7 w/m^2 b. 7.5 w/m^2 c. 5.0 w/m^2 d. 10 w/m^2 e. 2.5 w/m^2

Acar travels 40m in 8 seconds find the car speed

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?