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Troyanec [42]
3 years ago
15

NEED IT ASAP!!!!!!!!!!!!!!!!!!!!!

Physics
1 answer:
Yakvenalex [24]3 years ago
6 0
A, if this is not correct, please choose D.
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Delivery trucks that operate by making use of energy stored in a rotating flywheel have been used in Europe. The trucks are char
Marta_Voda [28]

Answer:

KE = 2.535 x 10⁷ Joules

Explanation:

given,

angular speed of the fly wheel = 940 rad/s

mass of the cylinder = 630 Kg

radius = 1.35 m

KE of flywheel = ?

moment of inertia of the cylinder

I = \dfrac{1}{2}mr^2

 =\dfrac{1}{2}\times 630\times 1.35^2

 = 574 kg m²

kinetic energy of the fly wheel

KE = \dfrac{1}{2}I\omega^2

KE =\dfrac{1}{2}\times 574\times 940^2

KE = 2.535 x 10⁷ Joules

the kinetic energy of the flywheel is equal to KE = 2.535 x 10⁷ Joules

5 0
3 years ago
If the weight of 1kg is 10 N in water what is the density of the stone<br>​
vekshin1

Answer:

I have a screenshot of this.

Explanation:

5 0
3 years ago
It took 500 newtons of force to push a car 4 meters. How much work was done?
Ede4ka [16]
Work = Force x Distance = 500 x 4 = 2000 Nm = 2000 J
3 0
2 years ago
Which part of the brain controls body temperature
astra-53 [7]
<span>Hormone: a chemical message released in the bodyby cells and glands that affects other cells in an organism. Hypothalamus: a part of the brain thatcontrols things like thirst, hunger, body temperature, and the release of many hormones.</span>
5 0
3 years ago
Read 2 more answers
Help !!!! Estimate the number of breaths taken by a person during 44 years?
Lisa [10]
44 x 12. I got the 12 from the total of 12 months in a year.


44 > 40

x
12 > 10
----------
The way my teacher taught me how to estimate is look at the neighbor to 44 and 12. The only time 44 can become 50, is when the neighbor is 5 or up. Same thing for 12. Now, multiply 40 and 10.

40 x 10 = 400.

Therefore, your estimate is 400.

The real answer is 520 breaths.
6 0
3 years ago
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