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3 years ago

Consider this statement: Air is matter. Which facts best support the statement?

Physics

2 answers:

lyudmila [28]3 years ago

7 0

A. Balloons can be filled with air.
C. Air has mass.

lara31 [8.8K]3 years ago

5 0

Explanation:

Anything that occupies space and has mass is known as matter. Matter can be solid state, liquid state or gaseous state.

For example, air is a mixture of gases. Also, it has mass and occupies space. Thus, air is matter.

Thus, we can conclude that the statements balloons can be filled with air and air has mass shows air is matter.

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3 years ago

What would the overall resistance be in a series circuit if there's an unknown R, 3Ω,3Ω and a current of 2A?

irinina [24]

Answer:

R + 6 ohms

Explanation:

The current is the same in all three resistors

i = 2 amps

The problem is that the total voltage is unknown.

R = r

R1 =3 ohms

R2 = 3 ohms

The voltage drop is E = I*R

I = 2 amps

R1 = 3 ohms

E = 3*2 = 6 volts

The second 3 ohm resistor also has 6 volts across it.

The total is 12 volts so far. But we know nothing more on how to solve for R.

All you can say is that the total resistance = R + 6 ohms

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3 years ago

Slushy snow in standing water can increase<br> hydroplaning risk.

Nesterboy [21]

Answer:

yes

Explanation:

Slushy snow can increase hydroplaning risk

my source: https://quizlet.com/29357993/chapter-12-practice-test-flash-cards/

6 0

4 years ago

A wind is blowing a small ice fishing shed along the ice to the east with a 800N force. The shed weighs 2,200N. What would the l

e-lub [12.9K]

Answer:

0.36

Explanation:

The maximum force of friction exerted by the surface is given by:

$F_f = \mu N$ (1)

where

$\mu$ is the coefficient of friction

N is the normal reaction

The shed's weight is 2200 N. Since there is no motion along the vertical direction, the normal reaction is equal and opposite to the weight, so

N = 2200 N

The horizontal force that is pushing the shed is

F = 800 N

In order for it to keep moving, the force of friction (which acts horizontally in the opposite direction) must be not greater than this value. So the maximum force of friction must be

$F_f = 800 N$

And substituting the values into eq.(1), we can find the maximum value of the coefficient of friction:

$\mu = \frac{F_f}{N}=\frac{800}{2200}=0.36$

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4 years ago

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2 years ago