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soldier1979 [14.2K]
2 years ago
12

Consider a helium balloon with volume 2.1 L.

Physics
1 answer:
Anna11 [10]2 years ago
6 0

Answer:

The net force is 26.52 N

Explanation:

Given that,

Volume of balloon = 2.1 L

Density of air  = 1.29 kg/m³

Mass = 1.3 g

Density of helium \rho'= 0.18\times10^{-3}\ g/cm^3

(a). We need to calculate the buoyant force on the balloon

Using formula of buoyant force

F_{b}=\rho V g

Put the value into the formula

F_{b}=1.29\times\times2.1\times9.8

F_{b}=26.54\ N

(b). We need to calculate the net force

Using formula of net force

F_{net}=F_{b}-(V\times\rho'+m)\times g

F_{net}=26.54-(2.1\times10^{-3}\times0.18\times10^{-3}+0.0013)\times9.8

F_{net}=26.52\ N

Hence, The net force is 26.52 N.

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Answer:

An asteroid impact could affect the tilt of the Earth due to the force it applies onto the planet. This would change Earth's seasons due to the fact that Earth's tilt causes seasons.

4 0
3 years ago
Heat flows into a gas in a piston and work is performed on the gas by its surroundings. The amount of work done is equal to the
inna [77]

Answer:

The Internal energy of the gas did not change

Explanation:

In this situation the Internal energy of the gas did not change and this is because according the the first law of thermodynamics

Δ U = Q - W  ------ ( 1 )

Δ U  = change in internal energy

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3 years ago
In a double slit experiment, 450 nm light passes through two slits producing an interference pattern where the first bright frin
musickatia [10]

Answer:

1.3 x 10⁻⁴ m

Explanation:

\lambda = wavelength of the light = 450 nm = 450 x 10⁻⁹ m

n = order of the bright fringe = 1

θ = angle = 0.2°

d = separation between the slits

For bright fringe, Using the equation

d Sinθ = n \lambda

Inserting the values

d Sin0.2° = (1) (450 x 10⁻⁹)

d (0.003491) = (450 x 10⁻⁹)

d = 1.3 x 10⁻⁴ m

6 0
2 years ago
Explain what is meant by “field” and compare the properties of gravitational, electric, and magnetic forces in terms of particle
Tema [17]
A field is the description of a spatial region, the force exerted on objects by a field is a field force. 
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electric force field: surrounds and affect electrical charges
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hope i helped a little

6 0
2 years ago
Read 2 more answers
If a crane worker lifts a crate with a mass of 250 kg from the ground to a
mina [271]

D.

The gravitational of a body is possessed by the body due to the virtue of its position.

The formula for gravitational potential energy is,

                                P.E = mgh joules

Substituting the values

196*9.8*250= 49k

7 0
2 years ago
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