Above information helps you bro.
Johannes Kepler contributed to the study of planets : He provided mathematical support for the heliocentric model.
<h3>What is Kepler's first law of planetary motion?</h3>
Kepler's first law of planetary motion states that the planets revolve around the Sun in orbits elliptical in shape with the Sun at its one of the focus.
As the planets rotate around the Sun, the relative distance between the Sun and planets increases and decreases.
The heliocentric model in which the Earth and planets revolve around the Sun at the center of the universe. Johannes gave the mathematical calculations of this model.
Thus, last option is correct.
Learn more about Kepler's first law of planetary motion.
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Answer:
C. Both A and B
Explanation:
Fuses are rated by the amperage they can carry before heat melts the element. The fuse is ideal for protection against short circuits. Short circuits produce enough amperage to vaporize a fuse element and break connection in one cycle of a 60-cycle system.
Specifically, the voltage rating determines the ability of the fuse to suppress the internal arcing that occurs after a fuse link melts and an arc is produced.
Answer:
Explanation:
Given that
Mass of ball=0.56kg
Initial speed=17m/s
Let g=9.81m/s²
Potential energy when the ball travel half way=?
Using equation of free fall to know the maximum height the ball will reach
v²=u²-2gH.
Upward direction i.e against gravity
The the velocity at the maximum height is zero because the body will momentary stop before coming downward , therefore v=0
Therefore,
v²=u²-2gH
0²=17²-2×9.81×H
0=289-19.62H
Then, 19.62H=289
H=289/19.62.
H=14.73m
Then,
The half way is distance is ½×H=½×14.73=7.36m
Then the potential energy at this point is given as
P.E=mgh
P.E=0.56×9.81×7.36
P.E=40.43J
The potential energy halfway is 40.43J
