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jeka94
2 years ago
7

Select all the correct answers.

Physics
1 answer:
sdas [7]2 years ago
5 0
I believe there are two correct answers, and those answers are A and D
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what is the acceleration of an object that moves at a constant velocity of 2.0 meters per second for 5 seconds?
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Constant velocity means moving in a straight line at a speed that doesn't change. If the object is moving with constant velocity then its acceleration is zero. Acceleration is the rate at which velocity is changing.
3 0
3 years ago
You are planning to make an open rectangular box from an 8-inch by 15-inch piece of cardboard by cutting congruent squares from
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Let us say that x is the cut that we will make on the sides to make a box, therefore the new dimensions are:

l = 15 – 2x

w = 8 – 2x

It is 2x since we cut on two sides.

 

We know that volume is:

V = l w x

V = (15 – 2x) (8 – 2x) x

V = 120x – 30x^2 – 16x^2 + 4x^3

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Taking the 1st derivative:

dV/dx = 120 – 92x + 12x^2

 

Set dV/dx = 0 to get maxima:

120 – 92x + 12x^2 = 0

 

Divide by 12:

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(x – (92/24))^2 = -10 + (92/24)^2

x - 92/24 = ±2.17

x = 1.66, 6

We cannot have x = 6 because that will make our w negative, so:

x = 1.66 inches

 

So the largest volume is:

V = 120x – 46x^2 + 4x^3

V = 120(1.66) – 46(1.66)^2 + 4(1.66)^3

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4 0
3 years ago
Which nervous system consist of the brain and spine
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3 years ago
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Answer:

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5 0
2 years ago
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