An auto accelerates forward from 7.0 m/s at a uniform 0.71 m/s2. It travels a distance of 1.033 km while accelerating. (a) How fast is the auto moving just as it is traveled the 1.033 km? (b) How many seconds did it take to travel the 1.033 km?
What will be an ideal response?
(a) 39 m/s (b) 45 s
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The purpose of using epicycles and deferents to explain the motion of the planets in the night sky was to account for
a. prograde motion.
b. Mercury's and Venus's limited angular distance from the Sun.
c. retrograde motion.
d. non-uniform speed of the planets in their orbits.
e. precession of the equinoxes.
According to the law of Malus, the transmitted intensity of a polarized beam of light passing through a polarizer is unchanged for an angle of 90°
Indicate whether the statement is true or false
How do high mass stars transport newly formed elements into the interstellar medium?
A) supernova explosions B) stellar winds C) formation of planetary nebula D) A and B E) A and C
The solar winds blow outward from
A) coronal holes. B) sunspots. C) flares. D) the entire photosphere. E) the Sun's poles only.