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shtirl [24]
2 years ago
5

A gas occupies a volume of 20 cubic meters at 9,000 pascals. If the pressure is lowered to 5,000 pascals, what volume will the g

as occupy?
Physics
1 answer:
forsale [732]2 years ago
5 0
We need to consider no change in the temperature of gas (isothermal transformation)

Volume and pressure are inversely proportional magnitudes, so we can write:

P_1.V_1=P_2.V_2\\
\\
9.20=5.V_2\\
\\
V_2=\frac{180}{5}=36 \ m^3
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Waves A and B have the same speed, but wave A has a shorter wavelength. Which wave has the higher frequency?
Nuetrik [128]
Frequency and wavelength are inversely proportional.
A shorter wavelength implies a higher frequency.
3 0
3 years ago
The speed of light is 3.0 x 108 m/s. How far does light travel in one day? Remember that you should first convert the day into s
Anna35 [415]

Answer:

2.59\times 10^{13}\ m

Explanation:

The speed of light is 3.0 x 10⁸ m/s

We need to find the distance traveled by it in one day.

1 day = 24 hours

1 day = 24 × 3600 seconds

= 86400 s

Now, using the formula of speed to find the distance covered as follows :

d=v\times t

Putting all the values, we get :

d=3\times 10^8\ m/s\times 86400\ s\\\\d=2.59\times 10^{13}\ m

Hence, light will cover 2.59\times 10^{13}\ m of distance in one day.

6 0
3 years ago
The U.S. has plans to build a 30-meter telescope, while the Europeans are thinking about a 39-meter telescope. What technologica
dmitriy555 [2]

Answer:

The mirror in these telescopes will be constructed from many smaller mirrors which will work together.

Explanation:

A telescope is defined as an optical instrument that is used to observe or view the distant objects. A telescope is made up of curved lenses or mirrors or by combining both.

In the context, both the US and the Europeans are planning to make a telescope which is 30 m and 39 m respectively. This could be possible as the mirrors that are used to make these telescope will be made from a many smaller mirrors that will work together as a single large mirror having a very large aperture.

8 0
3 years ago
How much heat is contained in 100 kg of water at 60.0 °C?
yulyashka [42]

Answer:

so how much heat is there at 0 C? That's zero. But for every degree above that you have 4.184 J. You take it from there. Remember q = mc*delta T.

8 0
3 years ago
Please help me! I don’t understand how to solve this problem.
skelet666 [1.2K]

What's the weight of the pear ?

Weight = (mass) x (gravity) = (1 kg) x (9.8 m/s²) = 9.8 Newtons.

OK. We know there's a force of 9.8 Newtons acting downwards on the pear.

Is the pear accelerating ? No ! It's just laying there on the table.

If it's not accelerating, then we know that the net force on it must be zero.

So there must be ANOTHER force acting UPWARDS on it, to exactly

cancel out the downward force of its weight. THAT's the "normal" force ...

the upward force that the table exerts on the pear. It must also be 9.8N,

but UPwards, so that if you add it to the weight, the sum is zero.

6 0
3 years ago
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