This table shows the acceleration due to gravity on four planets. Planet Gravity (m/s2) Earth 9.8 Mercury 3.7 Neptune 11.2 Uranu
2 answers:
Answer:
Explanation:
Earth ⇒ 9.8 m/s²
Mercury ⇒ 3.7 m/s²
Neptune ⇒ 11.2 m/s²
Uranus ⇒ 8.9 m/s²
The weight of a person can differ on different planets, but the mass stays the same. The greater the acceleration due to gravity, the greater the weight.
Arranging the planets in increasing order based on a person’s weight on the planet:
Mercury, Uranus, Earth, Neptune
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Answer:
0.08 ft/min
Explanation:
To get the speed at witch the water raising at a given point we need to know the area it needs to fill at that point in the trough (the longitudinal section), which is given by the height at that point.
So we need to get the lenght of the sides for a height of 1 foot. Given the geometry of the trough, one side is the depth <em>d</em> and the other (lets call it <em>l</em>) is given by:
since the difference between the upper and lower base is the increase in the base and we are only at halft the height.
Now we can calculate the longitudinal section <em>A</em> at that point:
And the raising speed <em>v </em>of the water is given by:
where <em>q</em> is the water flow (1 cubic foot per minute).
<h2>Option A is the correct answer.</h2>
Explanation:
Acceleration due to gravity
G = 6.67 × 10⁻¹¹ m² kg⁻¹ s⁻²
Let mass of earth be M and radius of earth be r.
We have
Now
A hypothetical planet has a mass of one-half that of the earth and a radius of twice that of the earth.
Mass of hypothetical planet, M' = M/2
Radius of hypothetical planet, r' = 2r
Substituting
Option A is the correct answer.