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4 years ago

Can we use momentum to see how fast the earth is going?

Physics

1 answer:

Kisachek [45]4 years ago

6 0

Yes, if we know the Earth's mass

Explanation:

The momentum of an object is a vector quantity given by the equation

$p=mv$

where

m is the mass of the object

v is its velocity

In this case, we are asked if we can find the velocity of the Earth by starting from its momentum. Indeed, we can. In fact, we can rewrite the equation above as

$v=\frac{p}{m}$

Therefore, if we know the momentum of the Earth (p) and we know its mass as well (m), we can solve the formula to find the Earth's velocity.

Learn more about momentum:

brainly.com/question/7973509

brainly.com/question/6573742

brainly.com/question/2370982

brainly.com/question/9484203

#LearnwithBrainly

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To illustrate the use of a multistage rocket consider the following:

garri49 [273]

Answer:

$v_f = 0.916 v_{ex}$

$v_f = 1.05 v_{ex}$

Explanation:

Considering question a

From the question we are told that

The mass of the rocket is $m_o$

The mass of the fuel which is in the rocket is m = 0.6 M

Generally given that the rocket burns all it fuel in a single stage , the final velocity of the rocket is mathematically represented as

$v_f = v_{ex} ln [\frac{m_o}{m_k} ]$

Here $m_k$ is the mass of the rocket without fuel which is mathematically evaluated as

$m_k = m_o- m$

=> $m_k = m_o -0.6m_o$

=> $m_k = [1- 0.6] m_o$

=> $v_f = v_{ex} ln [\frac{m_o}{[1 - 0.6]m_o} ]$

=> $v_f = 0.916 v_{ex}$

Considering question b

From the question we are told that

The mass of the fuel it burn at the first stage is $m = 0.3 m_o$

The mass of the first stage fuel tank $m_1 = 0.1 m_o$

The mass of the fuel at the second stage is $m_f = 0.3m_o$

Generally the velocity of the rocket at the first stage is mathematically represented as

$v_i = v_{ex} * ln [ \frac{m_o }{[1- m]m_o } ]$

=> $v_i = v_{ex} * ln [ \frac{m_o }{[1- 0.3]m_o } ]$

=> $v_i = v_{ex} * ln [ \frac{1 }{0.7 } ]$

=> $v_i =0.357 v_{ex}$

Generally the mass of the rocket after first stage is

$m_r = m_o - 0.3m_o -0.1m_o$

=> $m_r = 0.6m_o$

Generally the final velocity of the rocket at the second stage is

$v_f = v_i + v_{ex} * ln [\frac{m_r}{ m_f } ]$

=> $v_f = v_i + v_{ex} * ln [\frac{0.6 m_o }{0.3mo } ]$

=> $v_f = 0.357 v_{ex} + 0.693 v_{ex}$

=> $v_f = 1.05 v_{ex}$

4 0

3 years ago

Which element would most likely form an lonic bond with nitrogen (N)?<br> 0<br> Р<br> c<br> к

BARSIC [14]

Answer:

i would say k

if not then 0

5 0

4 years ago

Select the type of volcanoes that frequently erupt violently?

xxTIMURxx [149]

the correct answer would be

6 0

3 years ago

Pressure increases with depth towards the center of earth. In which layer would you expect pressure to be the greatest.

Amiraneli [1.4K]

You could expect to find it in the inner core

8 0

3 years ago

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Homes are often insulated with fiberglass insulation in their walls and ceiling. The thermal conductivity of fiberglass is 0.040

Murljashka [212]

Answer:

2.866 x 10^8 J

Explanation:

Thermal conductivity, K = 0.040 W/m^2 k

Area of the wall, A = 470 m^2

Thickness, d = 17 cm = 0.17 m

difference in temperature, ΔT = 30° C

The rate of heat flow is H.

Time, t = 1 day = 1 x 24 x 60 x 60 second = 86400 second

By use of formula of heat flow

$H=\frac{K A \Delta T}{d}t$

$H=\frac{0.040 \times 470 \times 30}{0.17}\times 86400$

H = 2.866 x 10^8 J

3 0

4 years ago