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JulijaS [17]
2 years ago
8

This is a device used to change the flow of electricity through a circuit

Physics
2 answers:
Vinvika [58]2 years ago
8 0
Transformers or also called voltage transformers
Natalija [7]2 years ago
8 0

Answer:

Transformers are devices used in electrical circuits to change the voltage of electricity flowing in the circuit. Transformers can be used either to increase the voltage or decrease the voltage.

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The electric motor of an elevator(lift) uses 630kJ of electric energy when raising the elevator and passengers, of total mass 12
lord [1]

Answer:

Efficiency = 0.575 = 57.5%

Explanation:

First, we will calculate the output energy of the elevator, which is equal to the potential energy acquired by the load.

O = Potential\ Energy\\O = mgh

where,

O = Output = ?

mg = W = Weight = 12500 N

h = height = 29 m

Therefore,

O = (12500\ N)(29\ m) \\O = 362500\ J = 362.5\ KJ

The input is given as:

I = 630 KJ

Thus the efficiency will be:

Efficiency = \frac{O}{I} = \frac{362.5\ KJ}{630\ KJ}\\\\

<u>Efficiency = 0.575 = 57.5%</u>

7 0
2 years ago
Base your answer(s) to the following question(s) on the information and diagram
klio [65]

Done I don't know answer of this question or this photo is the answer can you tell me

8 0
2 years ago
Many have compared freud's idea of the mind to an iceberg. if that were the case and you were standing on the deck of a ship in
frez [133]
The answer would be ego. It is because the ego is responsible for making the mind think or categorized things that are considered to be conscious and unconscious. As you realize the scenario above, the ego will make you think of what you should do in a given circumstances where you have to undergo reality testing of what you perceive and do.
6 0
3 years ago
What is the mass of a 10.4 cm³ cube of lead.
Gekata [30.6K]
<h2>Answer:</h2>

<em>The mass of a 10.4 cm³ is, approximately, </em><u><em>117.42 grams</em></u><em>.</em>

<h2>Explanation:</h2>

<em>Volume of the cube: 10.4 cm³</em>

<em>Now, let's look up the density of lead:</em>

<em>Density of lead: 11.29 g/cm³. </em>

<em>This value fo density tells us that 1 cm³ of lead has a mass of 11.29g. Hence, we can stablish the following rule of 3 to find the mass of our cube.</em>

<em>1 cm³ ----------------> 11.29 g</em>

<em>10.4 cm³------------> x</em>

<em>x= (10.4 cm³ ⋅ 11.29 g)/1 cm³</em>

<em>x= 117.42 g.</em>

<em />

Conclusion.

<em>The mass of a 10.4 cm³ is, approximately, </em><em>117.42 g</em><em>.</em>

7 0
1 year ago
It took Lilly 7 seconds to ride her bike 35 meters to the end of the block.What was her speed?
Zolol [24]
<h2><em>her average speed was 5 meter p/ second </em></h2><h2><em> 18 kph</em></h2><h2><em>                                     HOPE IT HELPS (◕‿◕✿)                                   </em></h2><h2><em>                                                   SMILE!!</em></h2>
4 0
2 years ago
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