3 years ago

Can i get help on question 7 please?

Mathematics

1 answer:

CaHeK987 [17]3 years ago

3 0

Do you have notes so I can look at them to help you? Cause I pretty good at math but I need the notes.

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In a hydroelectricity production, water falls from a dam into a turbine wheel 49 m below. What is the velocity of water at the t

ozzi

Answer:

C: 31 m/s

Step-by-step explanation:

It falls from a dam.

Thus;

Initial velocity; u = 0 m/s

Height; h = 49 m

Acceleration due to gravity is 9.8 m/s²

To solve for the final velocity this, we will use Newton's third equation of motion;

v² = u² + 2gh

v² = 0² + 2(9.8 × 49)

v = √960.5

v ≈ 31 m/s

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3 years ago

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faust18 [17]

We know that :

$\sf{\bigstar \ \ Cos\theta = \dfrac{Adjacent \ Side}{Hypotenuse}}$

From the figure, We can notice that :

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$\sf{\implies x^{\circ} = Cos^{-1}\bigg(\dfrac{8}{11}\bigg)}$

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3 years ago

-2.7+17.8+29.5+8.9=?

BARSIC [14]

Answer:

64.5

Step-by-step explanation:

64.5

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2 years ago

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Angles 1 and 3 are alternate interior angles which is why they are congruent

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Anyone know the answer ?

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It I c because it just the answer

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