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4 years ago

6

1. Go onto the Newsround website or article

2 answers:

poizon [28]4 years ago

5 0

Answer:

I read the article - the story was really sad.

Explanation:

- sincerelynini

Alecsey [184]4 years ago

4 0

I cant find a article with that name? Are you sure its right?

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Help! Elastic Collision.

chubhunter [2.5K]

If the question is in Mastering physics online, then the answer is not that hard. in fact, it's about the wording...

<span>You have to enter both ratios, meaning, you have to enter 5.83 and it's reciprocal, 0.1715...

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

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3 0

4 years ago

A solenoidal coil with 22 turns of wire is wound tightly around another coil with 330 turns. The inner solenoid is 21.0 cm long

Airida [17]

Answer:

$0.00027646\ T$

$2.33\times 10^{-5}\ H$

-0.04194 V

Explanation:

$N_2$ = Number of turns in outer solenoid = 330

$N_1$ = Number of turns in inner solenoid = 22

$I_1$ = Current in inner solenoid = 0.14 A

$\dfrac{dI_2}{dt}$ = Rate of change of current = 1800 A/s

$\mu_0$ = Vacuum permeability = $4\pi \times 10^{-7}\ H/m$

r = Radius = 0.0115 m

Magnetic field is given by

$B=\mu_0\dfrac{N_2}{l}I\\\Rightarrow B=4\pi \times 10^{-7}\times \dfrac{330}{0.21}\times 0.14\\\Rightarrow B=0.00027646\ T$

The average magnetic flux through each turn of the inner solenoid is $0.00027646\ T$

Magnetic flux is given by

$\phi=BA\\\Rightarrow \phi=0.00027646\times \pi 0.0115^2\\\Rightarrow \phi=1.14862\times 10^{-7}\ wb$

Mutual inductance is given by

$M=\dfrac{N_1\phi}{I}\\\Rightarrow M=\dfrac{22\times 1.14862\times 10^{-7}}{0.14}\\\Rightarrow M=2.33\times 10^{-5}\ H$

The mutual inductance of the two solenoids is $2.33\times 10^{-5}\ H$

Induced emf is given by

$\epsilon=-M\dfrac{dI_2}{dt}\\\Rightarrow \epsilon=-2.33\times 10^{-5}\times 1800\\\Rightarrow \epsilon=-0.04194\ V$

The emf induced in the outer solenoid by the changing current inthe inner solenoid is -0.04194 V

3 0

3 years ago

Which element listed would have the greatest electronegativity?

DiKsa [7]

Answer:

A. Fluorine

Explanation:

This is because it has the smallest atomic radius.

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7 0

3 years ago

Read 2 more answers

By how much would 1500j of heat energy raise the temperature of 0.50kg of aluminum

valentinak56 [21]

pls what is the specific heat capacity of water

7 0

3 years ago

What is the mass of a 5000 N car on Earth?

puteri [66]

Answer:

510.2kg

Explanation:

use w=mg then put the value you will get answer

4 0

3 years ago