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vampirchik [111]
3 years ago
5

PLS ANSWER ASAP

Physics
1 answer:
TiliK225 [7]3 years ago
3 0

Answer: Answer is D

I took the test little while back.

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A spherical balloon has a radius of 8.35 m and is filled with helium. how large a cargo can it lift, assuming that the skin and
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Assuming that the densities of the gases are:

density of air, ρ1 = 1.29 kg / m^3

density of helium, ρ2 = 0.179 kg / m^3

 

Since buoyant force and weight are two forces that are in opposite direction (buoyant force is up while weight is down), therefore equate the two:

buoyant force = weight

m g = (800 + m1) g

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m = 800 + m1

 

We know that mass is also expressed as:

m = ρ V

where ρ is density of gas and V is volume of the sphere

Since there are two interacting gases here, therefore m is:

m = (ρ1 – ρ2) V

 

Therefore:

(ρ1 – ρ2) V = 800 + m1

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2709.33 = 800 + m1

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Potential energy= mass x gravitational field x height
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John uses a lever to lift a load. The load weighs 480 N which is more than John can carry by himself. However, John can lift the
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Because the temperature remains constant, we can apply Boyle's Law which states that 
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Answer:
The pressure increases by a factor of 2.

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