Answer:
The speed of the flow of water in the river is 4 m/s.
Explanation:
Given that,
Speed of man = 5 m/s
If this man swims crosses a specific river his speed is 3 m/s.
If he takes the minimum time to cross the river
Let the speed of flow of water be
We need to calculate the speed of the flow of water in the river
Using formula for velocity
Where, = velocity of swimmer
= relative velocity
= velocity of river
Put the value into the formula
Hence, The speed of the flow of water in the river is 4 m/s.
Newton first law of motion
<span>Newton's First Law states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force</span>
So first things first its c. because when two plates collide it causes a earthquake so u can rule those out and of course no not volcano so that's it u only have c left as your answer choice.
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In order to compare the two temperatures, we need to convert 20°F into Celsius. The formula we need to use is:
Substituting 20°F, we find
And this is less than 0°C, so the answer is
20°F is colder than 0°C.
Answer:
Height of mirror 0.075 m
width of mirror 0.325 m
Explanation:
given data
wide = 1.3 m
high = 0.30 m
driver’s eyes = 0.50 m
rear window = 1.50 m
solution
we take here height / width of the mirror is
height / width = .................1
and
height /width of the window is
height /width = .................2
and
distance of eye / window by the mirror is
distance of eye / window = .................3
so here
θ = θi = θr ....................4
and tanθ for vertical is
tanθ =
tanθ = ....................5
so
h = ....................6
put here value and we get
h = 0.075 m
and
when we take here tanθ for horizontal than it will be
tanθ =
tanθ = .......................7
so
....................8
put here value and we get
w = 0.325 m