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3 years ago

Which statement is the best example of pseudoscience?

1 answer:

5 0

<span>pseudoscience includes beliefs theories, or practices that have been or are considered scientific, but have no basis in scientific fact.
This could mean the were disproved scientifically, can't be tested or lack evidence to support them.
Examples:Channeling- involves communicating with a spirit through a person

Astrology- beliefs that humans are affected by the position of celestial bodies
</span>

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In the process of changing a flat tire, a motorist uses ahydraulic jack. She begins by applying a force of 45 N to the inputpist

Verdich [7]

Answer:

3100.05 N

Explanation:

$F_1$ = Force on piston = 45 N

$r_1$ = Radius of piston

$r_2$ = Radius of plunger

$\dfrac{r_2}{r_1}=8.3$

From Pascal's law we have

$\dfrac{F_1}{A_1}=\dfrac{F_2}{A_2}\\\Rightarrow F_2=\dfrac{F_1A_2}{A_1}\\\Rightarrow F_2=\dfrac{F_1\pi r_2^2}{\pi r_1^2}\\\Rightarrow F_2=\dfrac{F_1r_2^2}{r_1^2}\\\Rightarrow F_2=F_1\dfrac{r_2^2}{r_1^2}\\\Rightarrow F_2=45\times 8.3^2\\\Rightarrow F_2=3100.05\ N$

The force is 3100.05 N

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3 years ago

What is the relationship between mass and acceleration on an object when the force is held constant?

Andreyy89

Answer:

according to newtons second law of motion,

Force = mass * acceleration

The acceleration of the body is directly proportional to the net force acting on the body and inversely proportional to the mass of the body.

I. e mass and acceleration are directly proportional to each other.

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The answer is

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