Jon's bathtub is rectangular and its base is 18 ft2. How fast is the water level rising if Jon is filling the tub at a rate of 0
1 answer:
To solve this problem we will use the concepts related to the volumetric flow rate, which describes the amount of volume per unit of time, through the Area of the section and the speed of the fluid over it. Mathematically this is:
Where,
Q = Discharge
A= Cross sectional Area
V = Velocity
Our values are given as,
Replacing,
Therefore the water level rises to a velocity of 0.038ft/min
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Answer:
Force=35 N
Explanation:
Given data
mass m=10.0 kg
Gravitational field E=3.50 N/kg
To find
Force
Solution
From definition of gravitational field intensity.
<h2>Right answer: acceleration due to gravity is always the same </h2><h2 />
According to the experiments done and currently verified, in vacuum (this means there is not air or any fluid), all objects in free fall experience the same acceleration, which is <u>the acceleration of gravity</u>.
Now, in this case we are on Earth, so the gravity value is
Note the objects experience the acceleration of gravity regardless of their mass.
Nevertheless, on Earth we have air, hence <u>air resistance</u>, so the afirmation <em>"Free fall is a situation in which the only force acting upon an object is gravity" </em>is not completely true on Earth, unless the following condition is fulfiled:
If the air resistance is <u>too small</u> that we can approximate it to <u>zero</u> in the calculations, then in free fall the objects will accelerate downwards at and hit the ground at approximately the same time.