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bonufazy [111]
3 years ago
6

assuming that the air temperature is constant, what happens to a hot air balloon if it goes too far up in the atmosphere , where

the outside air pressure is much less than the inside are pressure of the balloon? . . a. it bursts. . b. it loses air . . c. it burns up. . d. gravity begins to pull it back down to earth
Physics
1 answer:
PIT_PIT [208]3 years ago
7 0
Hello!

The balloon explodes, because the pressure builds up inside and the air want to expand. Letter a)

Hugs!
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A 70 kg student stands on top of a 5.0 m platform diving board . how much gravitational potential energy does the student have?
Marianna [84]

Answer:

a. P.E = 3430Joules.

b. Workdone = 3430Nm

Explanation:

<u>Given the following data;</u>

Mass = 70kg

Distance = 5m

We know that acceleration due to gravity is equal to 9.8m/s²

To find the potential energy;

Potential energy = mgh

P.E = 70*9.8*5

<em>P.E = 3430J</em>

b. To find the workdone;

Workdone = force * distance

But force = mass * acceleration

Force = 70*9.8

Force = 686 Newton.

Workdone = 686 * 5

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6 0
2 years ago
Enter an expression for the force constant for the floating raft, in terms of L, g, and the density of water, ρ.
andriy [413]

Answer:

K = ρL²g

Explanation:

Consider L as the length of the raft inside the water when the raft is displaced through additional distance y;

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F = upthrust ( restoring force) = weight of the liquid displaced.

F = V_{\omega} \rho_{\omega} g= A y \rho_{\omega} g

where;

A = L²

\rho_{\omega} = \rho

F = ky.

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Ay \rho g = ky

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Divide both sides by y

K = ρL²g

3 0
3 years ago
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