3 years ago

SOMEONE HELP

Physics

2 answers:

tatyana61 [14]3 years ago

8 0

Answer:

The answer is solenoid and metal

Explanation:

Nimfa-mama [501]3 years ago

6 0

The answer is: An electromagnet is a (Solenoid) with a (metal) core.

Plz mark brainliest and be safe out there

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Setler79 [48]

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3 years ago

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Harrizon [31]

The answer is A.) igneous rocks

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Can someone explain to me what potential difference is? Simple answers are always better! P.s : Last time my electricity questio

Artyom0805 [142]

<span>the difference of electrical potential between two points. hope this helps</span>

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3 years ago

Two stationary positive point charges, charge 1 of magnitude 3.90 nC and charge 2 of magnitude 1.80 nC, are separated by a dista

soldi70 [24.7K]

Answer:

$v = 7793150 m/s$

Explanation:

First, we are going to calculate the electrical potential in the point middle between the two charges

Remember that the electrical potential can be calculated as:

$v = \frac{kQ}{r}$

Where $k = 8.9874 x 10^{9} \frac{Nm^{2} }{C^{2} }$

and it is satisfy the superposition principle, thus

$v = \frac{8.9874x10^{9}(3.90x10^{-9} ) }{0.23} + \frac{8.9874x10^{9}(1.80x10^{-9} ) }{0.23}$

$v = 222.73v$

The electrical potential at 10 cm from charge 1 is:

$v = \frac{8.9874x10^{9}(3.90x10^{-9} ) }{0.1} + \frac{8.9874x10^{9}(1.80x10^{-9} ) }{0.36}$

$v = 395.44 v$

Since the work - energy theorem, we have:

$q\Delta v = \frac{mv^{2} }{2}$

where q is the electron's charge and m is the electron's mass

Therefore:

$v = \sqrt{\frac{2q\Delta v}{m} }$

$v = 7793150 m/s$

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nirvana33 [79]

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