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Elodia [21]
3 years ago
12

A load of 10 N stretches a spring by 10 cm. the relaxed length of the spring

Physics
1 answer:
Masteriza [31]3 years ago
4 0

Answer:

gj igijgofuvfuvcyvfjxyjcykg

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nadezda [96]

Answer:

An increase in angular speed due to conservation of energy priciple.

Explanation:

This leads to a decrease in your moment of inertia. This means that your angular velocity must increase as a result of conservation of energy principle and therefore you will spin faster.

It's also the same way this conservation of energy principle applies to ice skaters that makes them spin faster when they suddenly draw their arms inwards.

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3 years ago
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a

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There's no possible way to think about the validity of that equation until we know what the variables v, R, and g represent.

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6 0
3 years ago
Read 2 more answers
A solenoidal coil with 21 turns of wire is wound tightly around another coil with 350 turns. The inner solenoid is 25.0 cm long
77julia77 [94]

A) We need to calculate the Magnetic flux of a Solenoid,

\Phi = BA

Where B is the magnetic field and A the Area.

B=\frac{\mu_0 N_2 I}{l}

Here \mu_0 is the permeability constant, I the current and N number of turns.

Replacing we have,

\Phi = \frac{\mu_0 N_2 I}{l}(\pi r^2)

\Phi = \frac{(4\pi*10^{-7})(350)(0.12)}{25*10^{-2}} (\pi*\frac{2.5*10^{-2}}{2}^2)

\Phi = 1.036*10^{-7}Wb

B) We calculate the mutual inductance, so

M=\frac{N_1 \Phi}{i}

M=\frac{21*1.036*10^{-7}}{0.12}

M=1.813*10^{-5}H

c) We calculate the emf

\epsilon = -M \frac{dI}{dt}

\epsilon = -1.813*10^{-5}*1700

\epsilon= -0.030V

3 0
3 years ago
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