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rosijanka [135]
3 years ago
14

Now, consider whether the following statements are true or false:_____________________________________.

Physics
1 answer:
Igoryamba3 years ago
7 0

Answer:

A)F

B)F

C)T

Explanation:

A)

This is not always true that the product of the two vector's always non-negative .It may be positive or negative.

That is why this statement is false.

B)

The unit vectors in three perpendicular direction is i ,j and k.

We know that for unit vectors

i.i=j.j=k.k= 1

i .j= j.k=k.i=0

Therefore only  parallel component of the force will contribute in the integral part instead of perpendicular component of the force.

That is why this statement is false.

C)

This statement is True.

A)F

B)F

C)T

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Ask Your Teacher A trough is 16 ft long and its ends have the shape of isosceles triangles that are 2 ft across at the top and h
zloy xaker [14]

Answer:0.210 ft/min

Explanation:

Given

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width of base b=2 ft

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From Similar triangles property

\frac{4}{2x}=\frac{1}{y}

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V=\frac{1}{2}\times (2x\cdot y)\cdot

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differentiating

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at y=8 in.\approx 0.667 ft

9=64\times 0.667\times \frac{\mathrm{d} y}{\mathrm{d} t}

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6 0
4 years ago
A research submarine has a 30-cm-diameter window that is 8.6 cm thick. The manufacturer says the window can withstand forces up
slega [8]

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Using the formala

P = pgh

Where p is the density of water

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3 0
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Why is kinetic friction less than static?
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A kettle does 1 J of work in 1 second. What is the power of the kettle?
iris [78.8K]

Answer:

The power of the kettle is P = 1 watt.

Explanation:

The definition of power is:

Power equals the quotient between work and time, or:

P = w/t.

In this case, we know that the work is:

w = 1J

And the time is:

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