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noname [10]
3 years ago
12

What must be done to the wires used to make an electromagnet before they connect

Mathematics
2 answers:
CaHeK987 [17]3 years ago
4 0

Step-by-step explanation:

To create a simple electromagnet, you'll need a source of electricity, a conductor, and metal. Wrap insulated copper wire tightly around an iron screw or nail before connecting the wire to a battery, and watch as your new electromagnet picks up small metal objects.

Likurg_2 [28]3 years ago
3 0

Answer:it’s D

Step-by-step explanation: Ape.x

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EASY I AM JUST DUMB!! WILL GIVE BRANLIEST!!! HELP ASAP!!!!
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Answer:

I'm pretty sure it's D

Step-by-step explanation:

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3 0
4 years ago
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Find the sale price of a $90 item after a 50% discount.
Gekata [30.6K]

Answer:

The sale price of a $90 item after a 50% discount is $45.

3 0
3 years ago
An unusually wet spring has caused the size of a mosquito population in some city to increase by ​8% each day. If an estimated ​
tatyana61 [14]

Answer:

The number of mosquitoes that will inhabit the city on May 25 is 4,471,200.

Step-by-step explanation:

Note: This question is not complete as some important figures and points are omitted. The complete question is therefore provided before answering the question as follows:

An unusually wet spring has caused the size of a mosquito population in some city to increase by ​8% each day. If an estimated ​180,000 mosquitoes are in the city on May 12​, find how many mosquitoes will inhabit the city on May 25. Use y= 18​0,000(1.08)x where x is number of days since May 2.

The explanation to the answer is now given as follows:

Given;

y = 18​0,000(1.08)x = 18​0,000 * 1.08 * x .................... (1)

Where;

y = Number of mosquitoes that will inhabit the city on May 25 = ?

x = Number of days since May 2 = 25 - 2 = 23

Substituting for x = 23 into equation (1), we have:

y = 18​0,000 * 1.08 * 23

y = 4,471,200

Therefore, the number of mosquitoes that will inhabit the city on May 25 is 4,471,200.

3 0
3 years ago
A volume of a cylinder is given by the expression 6n2 – 13n – 28. The area of the base is 3n + 4.
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9 0
3 years ago
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By selling a table for sh.56, gain is as much as percent as its cost in dollars. What is the cost price? By selling a table for
sergij07 [2.7K]

The cost price of the table is $40.

<h3>What is Gain ?</h3>

Gain is the amount gain by selling the product at a higher price than its cost.

Let the cost of the table is $ x

The percentage gain is x%  (as given in the question)

Cost price = ?

It is known that

Step 1 : Gain = ( selling Price - Cost Price) * 100 / Cost Price

Selling price = 56

Cost Price = $ x

Therefore substituting the value

x = (56 - x) * 100 / x

x² = 5600 - 100x

x² +100x -5600 = 0

Step 2 : Factorizing

x² + 140x - 40 x -5600 = 0

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( x - 40)(x +14) = 0

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Therefore the cost price of the table is $40.

To know more about Gain

brainly.com/question/23385214

#SPJ1

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