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Vinvika [58]
3 years ago
13

the electromagnet shown in the image has a wire coiled 5 times around a nai. it can lift up to 7 metal paper clips. What two cha

nges would cause the electromagnet to increase its electromagnetic force and lift more paper clips?
Physics
2 answers:
stich3 [128]3 years ago
6 0

Answer: one of the answers should be increase the number of turns of wire on the nail

Explanation: the more you wrap the Wire on a nail, its electromagnet would increase

Dennis_Churaev [7]3 years ago
3 0

Answer:

Explanation:

The electromagnetic force of an electromagnet can be increased by:

1. wrapping the wire around the coil more times; or

2. increasing the current passing through the coil.

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Can someone help with these?
Flauer [41]

6.

Basically, all of these questions use F = ma

m = 80 kg

a = 1.62

Weight = F = 80*1.62 = 129.6

The closest answer is B

7.

<em><u>Step One</u></em>

Find the mass here on earth

m = F/a

F = 40 kg

a = 9.2

F = 40/9.2 = 4.34

Now take everything to the moon

F = 20 kg

a = ??

m = 4.34

a = F/m = 20/4.34 = 4.6 m/s^2

8

m = 40 kg

F = 20 N

a = ??

a = F/m = 20N/40kg = 1/2 m/s^2

Comment

All of these depend on F = m*a.  None but the first one talk about vertical forces where gravity would play a part. Moving horizontally means that there is no gravitational force if there is no friction.  a = 9.8 has nothing to do with the problem.

4 0
3 years ago
Need help in this question ???? Hurry please
Digiron [165]

Answer:

how quickly or slowly the object is moving

Hope this helps

7 0
3 years ago
A supercapacitor is an electrical energy storage device. A supercapacitor, initially charged to 2.1 thousand millivolts, supplie
svet-max [94.6K]

Answer:

the time taken t is 9.25 minutes

Explanation:

Given the data in the question;

The initial charge on the supercapacitor = 2.1 × 10³ mV = 2.1 V

now, every minute, the charge lost is 9.9 %  

so we need to find the time for which the charge drops below 800 mV or 0.8 V

to get the time, we can use the formula for compound interest in basic mathematics;

A = P × ( (1 - r/100 )ⁿ

where A IS 0.8, P is 2.1, r is 9.9

so we substitute

0.8 = 2.1 × ( 1 - 0.099 )ⁿ

0.8/2.1 = 0.901ⁿ

0.901ⁿ = 0.381

n = 9.25 minutes

Therefore, the time taken t is 9.25 minutes

6 0
3 years ago
F= (9.3 x 105 )(4.2 x 10-15)
kvv77 [185]

Answer:

3.906E-9 or 3.906 x 10-9

Explanation:

8 0
3 years ago
Which is true about surface waves?
Sauron [17]
The disturbance does not have a specific motions 
7 0
3 years ago
Read 2 more answers
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