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2 years ago

Which of the following tend to react by gaining 1 electron

Physics

2 answers:

Andrei [34K]2 years ago

8 0

The correct answer should be C

olchik [2.2K]2 years ago

3 0

Option (c) is the correct answer. Halogens react by gaining one electron.

The halogens in the periodic table are Florine, chlorine, Bromine, iodine, astatine

All these electrons are short of one electron in the outermost shell. so these halogens gain one electrons and form anions.

For example, Florine has an atomic number of 9. so its electronic configuration is given by 2,7. it needs one electron to complete its octet as

F + e--------> F⁻

All other halogens similarly gain one electron to react.

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An emf is induced in a conducting loop of wire 1.22 m long as its shape is changed from square to circular. Find the average mag

Afina-wow [57]

Answer:

The induced emf in the loop is $7.35\times 10^{-4}\ V$

Explanation:

Given that,

Length of the wire, L = 1.22 m

It changes its shape is changed from square to circular. Then the side of square be its circumference, 4a = L

4a = 1.22

a = 0.305 m

Area of square, $A=a^2=(0.305)^2=0.0930\ m^2$

Circumference of the loop,

$C=2\pi r=L\\\\r=\dfrac{L}{2\pi}\\\\r=\dfrac{1.22}{2\pi}=0.194\ m$

Area of circle,

$A'=\pi r^2\\A'=\pi (0.194)^2\\\\A'=0.118\ m^2$

The induced emf is given by :

$\epsilon=\dfrac{\d\phi}{dt}\\\\\epsilon=\dfrac{\d(BA)}{dt}\\\\\epsilon=B\dfrac{A'-A}{t}\\\\\epsilon=0.125 \times \dfrac{0.118-0.0930}{4.25}\\\\\epsilon=7.35\times 10^{-4}\ V$

So, the induced emf in the loop is $7.35\times 10^{-4}\ V$

8 0

2 years ago

What is the calculation for elastic potential?

grin007 [14]

Elastic potential energy is equal to the force times the distance of movement. Elastic potential energy = force x distance of displacement. Because the force is = spring constant x displacement, then the Elastic potential energy = spring constant x displacement squared.

3 0

2 years ago

A 2.20 kg mass is at the origin. A

Karolina [17]

Answer:

Explanation:

F1 = G•2.2•4.66/3² (pointed right)

F2 = G•2.2•4.66/3² (pointed left)

subtract the two to get zero

3 0

2 years ago

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