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3 years ago

How do you make a magnetic field stronger?

Physics

2 answers:

inna [77]3 years ago

4 0

Answer:

You can make a magnetic field stronger by doing the following:

1. Increasing the number of turns on the coil.

2. Increasing the current.

3. Placing an iron core inside the solenoid.

nika2105 [10]3 years ago

3 0

Answer:

Explanation:

You can make an electromagnet stronger by doing these things:

wrapping the coil around a piece of iron (such as an iron nail)

adding more turns to the coil.

increasing the current flowing through the coil.

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6) Bill and Amy want to ride their bikes from their neighborhood to school which is 14.4

Studentka2010 [4]

Answer:

Amy's speed is 2/3 faster than Bill's

Explanation:

can't believe you don't know how to do this.

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3 years ago

Which of the following is a compound? (A) Brass (B) Rust (C) Iron (D) Steel

Naya [18.7K]

Rust is a compound of iron and oxygen.

7 0

4 years ago

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A pipe that is open at both ends has a fundamental frequency of 320 Hz when the speed of sound in air is 331 m/s.

fenix001 [56]

Question

What is the length of the pipe?

Answer:

(a) 0.52m

(b) f2=640 Hz and f3=960 Hz

Explanation:

For an open pipe, the velocity is given by

$v=\frac {2Lf}{n}$

Making L the subject then

$L=\frac {nV}{2f}$

Where f is the frequency, L is the length, n is harmonic number, v is velocity

Substituting 1 for n, 320 Hz for f and 331 m/s for v then

$L=\frac {1*331}{2*320}=0.5171875\approx 0.52m$

(b)

The next two harmonics is given by

f2=2fi

f3=3fi

f2=3*320=640 Hz

f3=3*320=960 Hz

Alternatively, $f2=2\times \frac {v}{2L}$ and $f3=3\times \frac {v}{2L}$

$f2=2\times \frac {331}{2*0.52}=636.5 Hz\\f3=3\times \frac {331}{2*0.52}=954.8 Hz$

(c)

When v=367 m/s then

$f1= \frac {v}{2L}\\f1= \frac {367}{2*0.52}=352.9 Hz$

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3 years ago

Why is the energy stored in the wire per unit volume=1/2*strain*stress

Sav [38]

Answer:

have tried it and the units end up being Nm^-2 (the unit of stress) however the unit for joules is Nm.

Source https://www.physicsforums.com/threads/why-does-1-2-stress-strain-equal-the-energy-stored-per-unit-volume-in-a-wire.565495/

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3 years ago

Candace is interested in learning more about colors. Which question about colors could be answered through scientific investigat

tatuchka [14]

I think the correct answer from the choices listed above is the first option. Candace is interested in learning more about colors. The question about the colors that could be answered through scientific investigation would be:

Which color bends the most to make a rainbow?

Hope this helps. Have a nice day.

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3 years ago

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