3 years ago

What is the equation of the line that is perpendicular to y= -4x +5 and passes through the point (4,-3)?

Physics

1 answer:

Ostrovityanka [42]3 years ago

5 0

Y=4x-19

Perpendicular because it has an opposite reciprocal slope

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Which of the following examples show increasing potential energy?

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D. Riding a bike uphill
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2 years ago

As a summer intern assigned to the Olympics Kayaking committee, you need to determine the speed of water flowing through a rapid

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Answer:

11.56521 m/s

Explanation:

$A_1$ = Area of first section = $14\times 2$

$A_2$ = Area of second section = $5\times 0.92$

$V_1$ = Velocity in first section = 1.9 m/s

$V_2$ = Velocity in second section

From the continuity equation we get

$A_1V_1=A_2V_2\\\Rightarrow V_2=\dfrac{A_1V_1}{A_2}\\\Rightarrow V_2=\dfrac{14\times 2\times 1.9}{5\times 0.92}\\\Rightarrow V_2=11.56521\ m/s$

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2 years ago

A student is doing a lab experiment in which she uses diffraction to measure the width of a shaft of her hair. She shines a 530

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Answer:

.09 mm

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In case of diffraction by single slit with width a the width of central maxima is given below

width = 2 λD/a

where λ is wavelength of light , D is distance of screen , a is width o slit

substituting the given values

14 x 10⁻³ = $\frac{2\times530\times10^{-9}\times1.2}{a}$

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Which of the following expressions gives the amount of energy lost to friction by the toboggan and rider between points A and B?

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The difference is the SI units used.

Explanation:

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