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Sholpan [36]
3 years ago
5

What is efficiency of a machine?

Physics
2 answers:
Nataly_w [17]3 years ago
7 0

Answer:

<em>Efficiency</em><em> </em><em>of</em><em> </em><em>a</em><em> </em><em>machine </em><em>is</em><em> </em><em>defined </em><em>as</em><em> </em><em>the</em><em> </em><em>ratio</em><em> </em><em>of</em><em> </em><em>output </em><em>work</em><em> </em><em>to</em><em> </em><em>input </em><em>work </em><em>in</em><em> </em><em>a</em><em> </em><em>machine </em><em>.</em><em> </em><em>It</em><em> </em><em>is</em><em> </em><em>expressed</em><em> </em><em>in</em><em> </em><em>percentage </em><em>and</em><em> </em><em>denote</em><em>d</em><em> </em><em>by</em><em> </em>

<em>η</em><em> </em><em>(</em><em> </em><em>eta</em><em>)</em><em>.</em>

Flura [38]3 years ago
6 0
Mechanical efficiency is a measure of how well the machine converts the input work or energy into some useful output. It is calculated by dividing the output work by the input work. The ideal machine has mechanical efficiency equal to unity, while the real machine has mechanical efficiency less than unity
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Equal currents of magnitude I travel into the page in wire M and out of the page in wire N. The direction of the magnetic field
mario62 [17]

Answer:

<em>The direction of the magnetic field on point P, equidistant from both wires, and having equal magnitude of current flowing through them will be pointed perpendicularly away from the direction of the wires.</em>

Explanation:

Using the right hand grip, the direction of the magnet field on the wire M is counterclockwise, and the direction of the magnetic field on wire N is clockwise. Using this ideas, we can see that the magnetic flux of both field due to the currents of the same magnitude through both wires, acting on a particle P equidistant from both wires will act in a direction perpendicularly away from both wires.

5 0
4 years ago
How far apart would you have to place the poles of a 1. 5 v battery to achieve the same electric field?
Zarrin [17]

To place the poles of a 1. 5 v battery to achieve the same electric field is 1.5×10−2 m

The potential difference is related to the electric field by:

∆V=Ed

where,

∆V is the potential difference

E is the electric field

d is the distance

what is potential difference?

The difference in potential between two points that represents the work involved or the energy released in the transfer of a unit quantity of electricity from one point to the other.

We want to know the distance the detectors have to be placed in order to achieve an electric field of

E=1v/cm=100v/cm

when connected to a battery with potential difference

∆v=1.5v

Solving the equation,we find

d =  \frac{ \:Δv}{e}

=  \frac{1.5v}{100v/m}

= 1.5 \times 10 {}^{ - 2} m

learn more about potential difference from here: brainly.com/question/28166044

#SPJ4

6 0
1 year ago
For two objects with masses 100 kg and 500 kg to be 20 meters apart , find the gravity between them
Vikki [24]

Answer:

8,3375*10^-9 N

Explanation:

4 0
3 years ago
Which term describes the number of joules used per second by a circuit?
jasenka [17]

Answer:

B) Power

Explanation:

The power is defined by the following equation:

P = W / t

where:

W = work = Force * Distance = [Newton] * [meter]

t = time = seconds

The units for work are give en Newton per second, which is equal to Joules

And for power the unit used commonly is Watts, therefore:

Watts = (Joule/second)

5 0
3 years ago
Read 2 more answers
Find the speed of a wave with wave length 650 M and a frequency 35HZ<br><br> help.
hram777 [196]

Answer:

option A

Explanation:

wave speed= 650×35= 22750 m/s

hope it helps !

7 0
3 years ago
Read 2 more answers
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