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sergeinik [125]
4 years ago
7

Help plz I’ll give you the brainlist

Physics
1 answer:
MissTica4 years ago
8 0

Answer:

I need to obtain the brainlist

Explanation:

Give it to me now peasant

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Imagine a car tire that contains 5.1 moles of air when at a gauge pressure of 2.1×10^5N/m2 (the pressure above atmospheric press
True [87]

To solve this problem it is necessary to use the concepts given through the ideal gas equation.

For this it is defined that

PV = nRT

Where,

P = Pressure

V = Volume

R = Gas ideal constant

T = Temperature

n = number of moles.

In this problem we have two states in which the previous equation can be applied, so

1) P_1V_1 = n_1RT_1

2) P_2V_2 = n_2RT_2

From the first state we can calculate the Volume

V_1 = \frac{n_1RT_1}{P_1}

Replacing

V_1 = \frac{5.1*8.314*300.15}{3.1*10^5}

V_1 = 0.041m^3

From the state two we can calculate now the number of the moles, considering that there is a change of 0.8 from Volume 1, then

n_2 = \frac{P_2(0.8*V_2)}{RT_2}

n_2 = \frac{2.6*10^5(0.8*0.041)}{8.314*310.15}

n_2 = 3.3moles

Therefore there are 3.3moles of air left in the tire.

8 0
3 years ago
Help.. mee..<br><br><br> ;-; <br> Dont answer if you dont know I dont want to fail this
timama [110]

Answer:

It would be B because the warm air heats up and then burns the marshmallow. And the heat and the marshmallow were touching each other

Explanation:

5 0
3 years ago
Read 2 more answers
*help FAST* !15 pts!
Ludmilka [50]
I believe a but none sound like they’d build a laser
5 0
3 years ago
Read 2 more answers
1
ehidna [41]

Answer:

a = -1.6\ m/s^2

Explanation:

<u>Accelerated Motion</u>

It occurs when an object changes its speed over time. If the changes in speed are uniform, then the acceleration is constant, positive if the speed increases, negative if the speed decreases.

The acceleration is calculated as follows:

\displaystyle a=\frac{v_f-v_o}{t}

The aeroplane starts with a speed of vo=62 m/s and reaches a speed of vf=6 m/s in t=35 s.

The acceleration is:

\displaystyle a=\frac{6-62}{35}=-\frac{56}{35}

\mathbf{a = -1.6\ m/s^2}

3 0
3 years ago
A scientist observed the formation of hundreds of maggots and many flies on a rotting meat slice exposed to the environment. Wha
Phantasy [73]
Female flies are the one that are saddle with the responsibility of laying eggs during reproduction. The female usually look for a warm and moist place that have abundance food source for laying the eggs. The eggs laid by by the flies transformed into larva, which is also called maggots and the maggots turn into flies.
8 0
4 years ago
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