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Lisa [10]
3 years ago
6

When a rocket lifts off what provides the momentum match of the upper lift

Physics
1 answer:
dusya [7]3 years ago
5 0

The momentum of the mass expelled in the opposite direction ... the rocket-engine exhaust, or the ionized matter expelled from an ion drive.

THAT's why every propulsion engine has outlet nozzles designed with super-high-intensity math, to achieve the highest possible velocity for the mass that gets shot out the back ... so that it will carry the maximum possible momentum.  

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A circuit consists of a resistance R, and an inductance L in parallel connected, which is in series with a second resistance R2.
Allisa [31]

Answer:

The impedance of the inductor is ω L:

This is in parallel wth R giving a resistance of the parallel combination:

1 / Rp = 1 / ω L + 1 / R

Rp = (ω L * R) / (ω L + R)      for the impedance of the parallel combination

Total resistance (impedance) Rt = Rp + R2 = Z

One can use the term impedance to show that the resulting current is not in phase with the resulting voltage    

phase angle φ -    cos φ  = ω L / Rt

V = I Z        shows the relation of voltage and urrent

5 0
2 years ago
Which of the following describes velocity only in terms of metric units?
Lelechka [254]

Choice 'D' describes speed in the metric units 'meter' and 'second'.
With no mention of direction, it can't be called 'velocity'.

8 0
4 years ago
What is the difference between velocity and speed /vector and scalar? ​
stepladder [879]

Answer:

Speed only defines the magnitude of how fast an object is moving from one point to another. This is a scalar quantity (Only Value)

Velocity defines both how fast an object is moving and also in what direction the object is moving. This is a vector quantity (Value + Direction)

7 0
3 years ago
Think about a situation at school where you or someone you know
Diano4ka-milaya [45]

Answer:

to have courage and show the strength of your character. ... A person with true grit has passion and perseverance. Goals are set and followed through.

Explanation:

for example: i had the passion and the courage to finish my school work and chores for i can go out with my friends and to get out of the house for a bit and have fun so i had the courage to finish chores from the house and do some schoolwork for i can finish ad hang out with some friends. so i had the strength to finish everything because i didn't want to be doing school work and chores any more so i had the passion to finish up quickly  

6 0
3 years ago
Please help me :))
neonofarm [45]

Answer:

the one above the surface of earth

Explanation:

earth has gravity the ball of the moon would float away

7 0
3 years ago
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