3 years ago

Rubbing a balloon on hair is an example of static charging by....

Physics

2 answers:

marshall27 [118]3 years ago

8 0

Answer:

Hello there

Your answer is

friction

Hope it’s helps you Buddy

Explanation:

~Zayn

IRISSAK [1]3 years ago

6 0

Answer:

friction

Explanation:

it's answer is friction

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A moving small car has a head-on collision with a large stationary truck 7.3 times the mass of the car. Which statement is true

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The car bounces off and moves in the opposite direction

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The mussels are not native to the lakes, and they have begun to kill native mussels by attaching to them and covering them up. T

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The zebra mussels are an invasive species

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A 432 g sample of 60/27Co has a decay constant of 4.14 x 10-9 s-1. How long will it take before only 1/3 of the original sample

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remain 1s60

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2 years ago

A felt-covered beanbag is fired into a empty wooden crate that sits on a concrete floor and is open on one side. The beanba

Phantasy [73]

Answer:

31.42383 m/s

Explanation:

g = Acceleration due to gravity = 9.81 m/s²

$\mu$ = Coefficient of kinetic friction = 0.48

s = Displacement = 0.935 m

$m_1$ = Mass of bean bag = 0.354 kg

$m_2$ = Mass of empty crate = 3.77 kg

$v_1$ = Speed of the bean bag

$v_2$ = Speed of the crate

Acceleration

$a=-\frac{f}{m}\\\Rightarrow a=-\frac{\mu mg}{m}\\\Rightarrow a=-\mu g$

$a=--9.81\times 0.48=4.7088\ m/s^2$

From equation of motion

$v^2-u^2=2as\\\Rightarrow v=\sqrt{2as+u^2}\\\Rightarrow v=\sqrt{2\times 4.7088\times 0.935+0^2}\\\Rightarrow v=2.96739\ m/s$

In this system the momentum is conserved

$m_1v_1=(m_1+m_2)v_2\\\Rightarrow v_1=\frac{(m_1+m_2)v_2}{m_1}\\\Rightarrow u=\frac{(0.354+3.77)\times 2.69739}{0.354}\\\Rightarrow u=31.42383\ m/s$

The speed of the bean bag is 31.42383 m/s

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3 years ago

A foot is 1/3 of a yard. What part of a meter is a millimeter?

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Answer:

Explanation:

1/1000

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3 years ago