3 years ago

The graph that BEST shows the relationship between colour and wavelength is

Physics

1 answer:

Lady bird [3.3K]3 years ago

6 0

Answer is A I hope it helps

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A solenoid with 3,000.0 turns is 70.0 cm long. If its self-inductance is 25.0 mH, what is 5) its radius? (The value of o is 4 ×

Elan Coil [88]

The self-inductance of a solenoid is given by:
$L= \frac{\mu_0 N^2 A}{l}$
where
$\mu_0$ is the vacuum permeability
N is the number of turns
A is the cross-sectional area of the solenoid
l is the length of the solenoid

For the solenoid in our problem, N=3000, l=70.0 cm=0.70 m and the self-inductance is L=25.0 mH=0.025 H, therefore the cross-sectional area is
$A= \frac{Ll}{\mu N^2}= \frac{(0.025 H)(0.70 m)}{(4\pi \cdot 10^{-7}N/A^2)(3000)^2}= 1.55 \cdot 10^{-3}m^2$
And since the area is related to the radius by
$A=\pi r^2$
The radius of the solenoid is
$r= \sqrt{ \frac{A}{\pi} } = \sqrt{ \frac{1.55 \cdot 10^{-3} m^2}{\pi} } =0.022 m=2.2 cm$

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3 years ago

In a thermometer low fixed point is 5c . High fixed point is 95c .

Bingel [31]

Answer:

Explanation:

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3 years ago

Atoms of an element contain only one type of atom because they each contain the same number of

stich3 [128]

Answer:

I believe it is B

Explanation:

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4 years ago

The current in a hair dryer measures 18 amps. The resistance of the hair dryer is 12 ohms. What is the voltage?

Korolek [52]

Voltage= current*resistance or V=IR

so V=18*12= 216 volts

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3 years ago

Which of the following is a hypothesis?

inna [77]

Answer:

Explanation:

Hypothesis is one of the science methods. Hypothesis is the same as guessing. It's a scientific method that precedes observations.

According to the question asking that Which of the following is a hypothesis ?

The correct option is C which is

If a squid is attacked by a predator, it will squirt ink

It is an hypothesis because there is no experimental evidence to back it up.

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3 years ago

The graph that BEST shows the relationship between colour and wavelength is​

The graph that BEST shows the relationship between colour and wavelength is