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Daniel [21]
4 years ago
7

About 10-15% of all galaxies are which shape?

Physics
1 answer:
myrzilka [38]4 years ago
4 0
The answer is; Irregular.
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5.37 At steady state, a power cycle develops a power output of 10 kW while receiving energy by heat transfer at the rate of 10 k
Anika [276]

Answer: minimum theoretical value of T = 750k

Explanation:

Assuming the the cycle is reversible and is ideal then

Wnet/Qh = Nmin .... equa 1

Equation 1 can be rewritten as

(Th -TL)/ Th ...equation 2

Th= temp of hot reservoir

TL= temp of low reservoir= 300

Wnet = power generated=10kw

He = energy transfer=10kj per cycle

Qhe = power transfer = (100/60)*10Kj = 16.67kw

Sub into equat 1

Nmin = 10/16.67 = 0.6

Sub Nmin into equation 2

Th = -TL/(Nmin -1) = -300k/(0.6 - 1)

Th =750k

4 0
3 years ago
How has modern safety equipment found in automobiles helped to counteract Newton’s First Law of Motion?
Charra [1.4K]

Answer:

Well. the law says "an object in motion stays in motion" So seatbelts could be one. they stop us humans from continuing to move when the car stops.

8 0
3 years ago
Make a Book Quilt Project about the book Bud, Not Buddy
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Answer:

Explanation:

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3 years ago
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How fast (in rpm) must a centrifuge rotate if a particle 6.00 cm from the axis of rotation is to experience an acceleration of 1
astra-53 [7]
The acceleration experienced by the particle is given by
a=113000 g=113000 \cdot 9.81 m/s^2
This corresponds to the centripetal acceleration of the motion, which is related to the angular speed \omega of the particle and its distance r from the axis by the relationship
a= \omega ^2 r
In our problem, r=6 cm=0.06 m, so we can solve for \omega:
\omega = \sqrt{ \frac{a}{r} } = \sqrt{ \frac{113000 \cdot 9.81 m/s^2}{0.06 m} }=4298 rad/s
However, we must convert it into rpm (revolution per minute).
We know that 1 rad corresponds to ( \frac{1}{2 \pi} ) revolutions, while 1 s =  \frac{1}{60} min. So we the conversion is\omega = 4298 rad/s \cdot ( \frac{1}{2\pi} rev/rad )( 60 s/min)=41067 rpm

4 0
4 years ago
List 3 cases in which potential energy becomes kinetic energy and three cases in which kinetic energy becomes potential energy.
Mrrafil [7]

Answer:

when you open a can of pop

when you jump on your bed

Explanation:

3 0
3 years ago
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