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Finger [1]
3 years ago
7

Which vector below goes from (0, 0) to (-2, 3)?

Physics
1 answer:
TEA [102]3 years ago
8 0
Here is the answer!!!!!!!

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Kinetic energy of an object is equal to
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Choice-'b' says the formula for kinetic energy in words.

     KE = (1/2) · (M) · (S²)
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An object kept in front of lens, which is thick at the edges, produces a _________,
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B

Explanation:

A diverging lens forms a virtual image that is as the same size as the object

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Homeostasis can require the control of many different variables in organisms. Homeostasis regarding internal body temperature is
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idk

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An engine absorbs 1749 J from a hot reservoir and expels 539 J to a cold reservoir in each cycle. a. What is the engine’s effici
Masja [62]

Answer:

a)η = 69.18 %

b)W= 1210 J

c)P=3967.21 W

Explanation:

Given that

Q₁ = 1749 J

Q₂ = 539  J

From first law of thermodynamics

Q₁   = Q₂ +W

W=Work out put

Q₂=Heat rejected to the cold reservoir

Q₁ =heat absorb by hot  reservoir

W= Q₁- Q₂

W= 1210 J

The efficiency given as

\eta=\dfrac{W}{Q_1}

\eta=\dfrac{1210}{1749}

\eta=0.6918

η = 69.18 %

We know that rate of work done is known as power

P=\dfrac{W}{t}

P=\dfrac{1210}{0.305}\ W

P=3967.21 W

8 0
3 years ago
A block is being pulled upward along an inclined surface at a constant speed. Which of the following statements is correct? Grou
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Answer:The net force on the block is zero.

Explanation:

Given

Block is being pulled upward along an inclined surface at a constant speed

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