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3 years ago

Make V the subject of the formula E=mv2/2

Mathematics

1 answer:

Dima020 [189]3 years ago

5 0

Answer:

v = ± $\sqrt{\frac{2E}{m} }$

Step-by-step explanation:

Given

E = $\frac{mv^2}{2}$ ( multiply both sides by 2 to clear the fraction )

2E = mv² ( divide both sides by m )

$\frac{2E}{m}$ = v² ( take the square root of both sides )

v = ± $\sqrt{\frac{2E}{m} }$

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3 years ago

Explain how you can finding 4 384

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3 years ago

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Where does Pythagorean identities and also how it relates to the right triangles

Ostrovityanka [42]

Answer:

A pythagorean identity means that for any angle $\theta$ , $sin^2\theta+cos^2\theta=1$ .

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Step-by-step explanation:

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2 years ago

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Ira Lisetskai [31]

Answer:

(0, -1)

Step-by-step explanation:

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3 years ago

A game involves drawing a single card from a standard deck. One receives 60 cents for an ace, 30 cents for a king, and 5 cents f

professor190 [17]

Answer:

The expected game value is -1 cent

Step-by-step explanation:

Here, we want to calculate the expected value of the game

We have 4 aces and 4 kings, including 26 red cards

The number of aces is 4

Probability of drawing an ace is 4/52 = 1/13

Probability of drawing a king is also 4/52 = 1/13

There are 26 red cards

The number of red cards that are neither ace nor king

There are 2 red aces and 2 red kings

So the number of cards that are red but are not

aces nor kings are 26-2-2 = 22

The probability of selecting this is 22/52 = 11/26

So the expected value is simply the probability multiplied by the amount

Thus, we have;

(60 * 1/13) + (30 * 1/13) + (5 * 11/26)

= 60/13 + 30/13 + 55/26

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we subtract this from the 10 cents we are playing with, thus we are left with 9-10 = -1 cent

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3 years ago