3 years ago

I need help with all of these questions

Physics

1 answer:

Sedbober [7]3 years ago

7 0

Answer:

This was my best estimation of the answers

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Inside a nuclear power plant, nuclear fission takes place within the heat exchanger

VARVARA [1.3K]

Okay................

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3 years ago

A jet aircraft is traveling at 260 m/s in horizontal flight. The engine takes in air at a rate of 53.3 kg/s and burns fuel at a

IrinaVladis [17]

Answer:

The thrust of the jet engine is 4188.81 N.

Explanation:

Given that,

Speed = 260 m/s

Rate in air= 53.3 kg/s

Rate of fuel = 3.63 kg/s

Relative speed = 317 m/s

We need to calculate the rate of mass change in the rocket

Using formula of rate of mass

$\dfrac{dM}{dt}=\dfrac{dM_{a}}{dt}+\dfrac{dM_{f}}{dt}$

Put the value into the formula

$\dfrac{dM}{dt}=53.3+3.63$

$\dfrac{dM}{dt}=56.93\ kg/s$

We need to calculate the thrust of the jet engine

Using formula of thrust

$T=\dfrac{dM}{dt}u-\dfrac{dM_{a}}{dt}v$

Put the value into the formula

$T=56.93\times317-53.3\times260$

$T=4188.81\ N$

Hence, The thrust of the jet engine is 4188.81 N.

7 0

4 years ago

How many electrons do alkali metals have in their outer shell?

BARSIC [14]

The outer shell can hold 1 electron

3 0

3 years ago

Read 2 more answers

Why do stars appear to move through the night sky at the rate of 15 degrees per hour?

Nana76 [90]

The earths rotation makes the sky "move" and this rotates the view of the stars above.

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4 years ago

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Mike and Juan were studying forces and decided to do an experiment. they placed four

lora16 [44]

Answer:

Friction.

Explanation:

The is friction because the blocks are different substances, and different substances are able to move across different flooring more easily.

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3 years ago