2 years ago

Prompt

Physics

1 answer:

Mamont248 [21]2 years ago

6 0

Answer:

1.bandages

2.cottons

3.scissor

4.medicines

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What is the name given to this group of elements?

Marianna [84]

Your answer would be A. Halogens

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3 years ago

Calculate the propellant mass required to launch a 2000 kg spacecraft from a 180 km circular orbit on a Hohmann transfer traject

Finger [1]

Answer:

t = 12,105.96 sec

Explanation:

Given data:

weight of spacecraft is 2000 kg

circular orbit distance to saturn = 180 km

specific impulse = 300 sec

saturn orbit around the sun R_2 = 1.43 *10^9 km

earth orbit around the sun R_1= 149.6 * 10^ 6 km

time required for the mission is given as t

$t = \frac{2\pi}{\sqrt{\mu_sun}} [\frac{1}{2}(R_1 + R_2)]^{3/2}$

where

$\mu_{sun}$ is gravitational parameter of sun = 1.32712 x 10^20 m^3 s^2. $t = \frac{2\pi}{\sqrt{ 1.32712 x 10^{20}}} [\frac{1}{2}(149.6 * 10^ 6 +1.43 *10^9 )]^{3/2}$

t = 12,105.96 sec

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3 years ago

Which of the following statements best describe the frequency of a wave?

Brrunno [24]

Answer:

I believe the answer is B.

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3 years ago

An object of mass 0.50 kg is transported to the surface of Planet X where the object’s weight is measured to be 20 N. The radius

Olin [163]

Answer:

$g'=40\ m.s^{-2}$

Explanation:

Given:

mass of the object, $m=0.5\ kg$

weight of the object on planet x, $W=20\ N$

radius of the planet, $R=4\times10^6\ m$

radial distance between the planet and the object, $r=2\times 10^6\ m$

<u>Now free fall acceleration on planet X:</u>

$W=m.g'$

$20=0.5\times g'$

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3 years ago

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What the motion of an object that has an acceleration of 0 m/s

Degger [83]

<span>Everything in the system is stable and therefore the objects motion is stable. That is to say it is not changing what it is already doing. As far as i know zero times zero is still zero. In that case then the motion must be constant or stable.</span>

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2 years ago