True or False: Unlike a fixed pulley, a moveable pulley multiplies the input force

Physics

1 answer:

IceJOKER [234]2 years ago

6 0

The answer would be Yes True.

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the gasoline in a car does 40000 j of work on a car and generates a constant force of 20 n. how far did the car go?

NikAS [45]

   Work = (force) x (distance)

   40,000 J = (20 N) x (distance)

   Distance = (40,000 J) / (20 N)

=    2,000 meters

= 2 kilometers.

(20 N is not a huge force when it's being used to move a car.
It's only about 4.5 pounds.)

8 0

2 years ago

PLEASE HELP!!!!

Aleks [24]

The answer is step by step 65

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2 years ago

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Which of the following terms relate to the meaning of "physical"?

Vinil7 [7]

Body
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2 years ago

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A soap bubble, when illuminated with light of frequency 5.27 Hz × 1014 Hz, appears to be especially reflective. If it is surroun

denis23 [38]

Answer:

$1.07004\times 10^{-7}\ m$

Explanation:

$n_s$ = Refractive index of bubble = 1.33

f = Frequency of light = $5.27\times 10^{14}\ Hz$

c = Speed of light = $3\times 10^8\ m/s$

The wavelength of light is given by

$\lambda=\dfrac{2n_st}{m-\dfrac{1}{2}}$

Wavelength is also given by

$\lambda=\dfrac{c}{f}$

m = 1 for minimum thickness

$\dfrac{c}{f}=\dfrac{2n_st}{m-\dfrac{1}{2}}\\\Rightarrow t=\dfrac{m-\dfrac{1}{2}c}{2n_sf}\\\Rightarrow t=\dfrac{(1-\dfrac{1}{2})\times 3\times 10^8}{2\times 1.33\times 5.27\times 10^{14}}\\\Rightarrow t=1.07004\times 10^{-7}\ m$