2 years ago

How to solve for the coefficient of friction

1 answer:

3 0

Their are two coefficients of friction, static and kinetic, regardless, they have basically the same formula:

u*N = F... aka
coefficient of friction*normal force = force of friction

Hope that helps!

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Levi and Clara are trying to move a very heavy box. Levi is pushing the box with a force of 30 N, and Clara is pulling the box w

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There is a ner force of 15 N allowing Levi and Clara to mobe the box.

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2 years ago

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Once Kate's kite reaches a height of 50 ft (above her hands), it rises no higher but drifts due east in a wind blowing 7 ft d

Margaret [11]

Answer:

dz = 7.136 (answer)

Explanation:

given height for kate's kite = 50 ft (say y)

due to drift it move towards east = dx = 7 ft

string maximum length = 107 ft ( say z)

we have to find change in z

that is dz

it will form a right angle triangle for x , y and z where x is base y is height and z is hypotenuse

so we get according to Pythagoras Theorem

$z^2 = x^2+y^2\\$ ...............(i)

by derivative both side consider y as constant

$2zdz = 2xdx\\dz = {xdx }/z$

from (i) equation

$x = \sqrt{z^2-y^2}$

$dz = \sqrt{z^2-y^2}dx/z$

now put the value and find dz

$dz = (\sqrt{120^2-50^2)}7/107\\ =((\sqrt{14400 -2500} )\times7)/107$

after solving these we get

$dz =\frac{109.08\times7}{107}$

dz = 7.136 (answer)

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2 years ago

the base used. to treat books containing acidic paper are usually gases. rather than liquid solutions. why do you think so

motikmotik

Liquid would like wet the pages.

Hope this helps !
Brainliest if it pleases you :D

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vova2212 [387]

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