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vova2212 [387]
3 years ago
8

5. You are pulling a rubber sneaker along concrete

Physics
1 answer:
Ainat [17]3 years ago
3 0

Answer:

Fs = 17.66 N

Explanation:

The force of static friction is given by the following formula:

F_s = \mu R = \mu W\\

where,

Fs = The force of static friction = ?

μ = coefficient of static friction = 0.9

W = weight of sneakers = mg

m = mass of sneakers = 2 kg

g = acceleration due to gravity = 9.81 m/s²

Therefore,

F_s = \mu mg\\F_s = (0.9)(2\ kg)(9.81\ m/s^2)\\

<u>Fs = 17.66 N</u>

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The correct answer is total revenue minus total cost.

When a firm is calculating the profit they need to find the difference between how much money they earned and how much they spent. The difference between their total revenue and their total cost is their profit.

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the answer is D

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Find the intensity of the electromagnetic wave described in each case. (a) an electromagnetic wave with a wavelength of 630 nm a
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Find the intensity of the electromagnetic wave described in each case.

(a) an electromagnetic wave with a wavelength of 645 nm and a peak electric field magnitude of 8.5 V/m.
  
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10. What is the acceleration of a 1000 kg car subject to a 500 N net force?
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Answer:

0.5m/s^2

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F = ma

F/m = a

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500/1000 = 0.5m/s^2

Best of Luck!

3 0
2 years ago
A convex lens has a focal length of 16.5 cm. Where on the lens axis should an object be placed in order to get a virtual, enlarg
alexandr402 [8]

Answer:

Object should be placed at a distance, u = 7.8 cm

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focal length of convex lens, F = 16.5 cm

magnification, m = 1.90

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Magnification of lens, m = -\frac{v}{u}

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u = object distance

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Now,

1.90 = \frac{v}{u}

v = - 1.90u

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\frac{1}{16.5} = \frac{1.90 - 1}{1.90u}

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Object should be placed at a distance of 7.8 cm on the axis of the lens to get virtual and enlarged image.

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