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Alex73 [517]
4 years ago
6

The problem is in the picture.Frictional forces are neglected.We know the alpha angle and the constant value of velocity v.Then

find the value of speed "u" when the thread makes angle alpha with horizontal

Physics
1 answer:
I am Lyosha [343]4 years ago
5 0

Answer:

u = v * cos α

Explanation:

The velocity u is the horizontal component of the velocity v.

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Which of the following factors will negatively impact the rate of diffusion of a molecule?
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Answer:

A low difference in the concentration of the molecule across the media

Explanation:

Diffusion is a type of passive transport where the molecules move in the influence of concentration gradient of diffusing molecules i.e. from the higher concentration region to the lower concentration region. There are some factors which affect the rate of diffusion, these are written below -

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Looking at these factors we can conclude that the second statement in the question tells about a negative impact regarding the diffusion because due to low difference in concentration across the two media, the rate of diffusion will be lower.

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A spelunker is surveying a cave. She follows a passage 140 m straight west, then 290 m in a direction 45? east of south, and the
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Sum up in a few sentences what did Cavendish discover and how did he do it?
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What will happen if a car experiences a 300 N force to the right from the engine and a separate 150 N force due to friction and
gayaneshka [121]

Force applied on the car due to engine is given as

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Also there is a force on the car towards left due to air drag

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now the net force on the car will be given as

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now we can say that since the two forces are here opposite in direction so here the vector sum of two forces will be the algebraic difference of the two forces.

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F_{net} = F_1 - F_2

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