Answer:
3rd class lever
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Answer:
so that each component has the same voltage.
Explanation:
Answer:
When the image distance is positive, the image is on the same side of the mirror as the object, and it is real and inverted. When the image distance is negative, the image is behind the mirror, so the image is virtual and upright.
Explanation:
Answer:
30 m/s
Explanation:
Vf = ?
Vi = 0 m/s
a = 20 m/s^2
t = 1.5 s
Plug those values into the equation: Vf = Vi + at
Vf = 0 + (20)(1.5)
Vf = 30 m/s
<h2>
Answer: Paths of the planets follow an elliptical orbit around the sun</h2>
Explanation:
Copernicus's model of the universe (heliocentric theory) was refuting the long life geocentric theory (the Earth as the center of the universe) proposed by Ptolemy and accepted by the Catholic Church.
However, the heliocentric theory did not explain why planets orbit the Sun at different speeds at different times, because<u> this model used only circular orbits. </u>
Years later, the astronomer Johannes Kepler refined the Copernicus' heliocentric theory with the introduction of <u>elliptical orbits</u> with the formulation of his three laws of planetary motion.
Where Kepler’s 1st Law is a clear example:
<em>The orbit of a planet around the Sun, is in the form of an ellipse with the Sun at one of the two foci of that ellipse. </em>
