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4 years ago

Ursula is a student of Kantian philosophy who argues that we should never use people as a means to an end unless

Physics

1 answer:

ANTONII [103]4 years ago

8 0

Answer: we embrace and are simultaneously respecting their rational autonomy

Explanation:

Ursula is a student of Kantian philosophy who argues that we should never use people as a means to an end unless we embrace and are simultaneously respecting their rational autonomy

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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

A small object of mass M is shot horizontally from a spring launcher that is attached to a table. All frictional forces are cons

faltersainse [42]

Answer:

C. greater than D, but less than 2D

Explanation:

The amount of potential energy in the system is a function of the compression of the spring. That is the same for both masses.

The potential energy is transferred to kinetic energy when the spring is released. The kinetic energy is jointly proportional to the mass and the square of the velocity. That is, the velocity is inversely proportional to the square root of the mass, for the same kinetic energy.

The horizontal distance traveled will be proportional to the launch velocity. So a halving of the mass will increase the velocity by a factor of ...

v2 = v1·√(1/(1/2)) = v1·√2

This means the second mass will land at a distance of about D√2, a value ...

greater than D but less than 2D.

5 0

3 years ago

HELPPPP MEEE!!! 15 POINTS

GalinKa [24]

Answer:

I think it is eyeglasses

Explanation:

I think this because the glasses usually reflect the same thing sometimes and the light passes through really easy

4 0

4 years ago

How much power is used if an athlete lifts a 50N weight up 2 meters in 10 seconds?

Tcecarenko [31]

Answer:

the power used by the person is 10 W.

Explanation:

Given;

weight lifted, W = 50 N

distance through which the weight was lifted, d = 2 m

time of motion, t = 10 s

The power used by the person is calculated as;

$P= FV\\\\P = F \ \times \ \frac{d}{t} \\\\P = 50 \ \times \ \frac{2}{10} \\\\P = 10 \ W$

Therefore, the power used by the person is 10 W.

3 0

4 years ago

Que es la energia electrica

Mnenie [13.5K]

Answer:

:) :) :) :) :) :) :) :) :)

Explanation:

:) :) :) .......

6 0

3 years ago