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2 years ago

A hiker yells out "Hello!" into a canyon. If the echo of their voice

Physics

1 answer:

Tasya [4]2 years ago

3 0

D 193 is the right answer if not try c because it is in between them both

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What is the suitable condition for the superconductivity and high resista (a) Weak phonon-phonon interactions (b) No interaction

Readme [11.4K]

Answer:

(d) A strong electron-phonon interaction

Explanation:

Superconductivity -

The phenomenon of superconductivity is due to the attractive force between electrons from the exchange of the phonons that cause the bound pair of electrons known as cooper pairs .

A strong electron -phonon intercation is suitable condition for superconductivity and high resistance .

4 0

2 years ago

A migrating robin flies due north with a speed of 12 m/s relative to the air. The air moves due east with a speed of 6.7 m/s rel

mafiozo [28]

Here it is given that speed of migrating Robin is 12 m/s relative to air

so we can say that

$\vec v_{ra} = 12 m/s$ North

so it will be

Let North direction is along Y axis and East direction is along X axis

$\vec v_{ra} = 12\hat j$

also it is given that speed of air is 6.7 m/s relative to ground

$\vec v_a = 6.7 \hat i$

now as we know by the concept of relative motion

$\vec v_{ab} = \vec v_a - \vec v_b$

$\vec v_{ra} = \vec v_r - \vec v_a$

now by rearranging the terms

$\vec v_r = \vec v_{ra} + \vec v_a$

$\vec v_r = 12 \hat j + 6.7 \hat i$

now we need to find the speed of Robin which means we need to find the magnitude of its velocity which we found above

So here we will say

$v_r = \sqrt{12^2 + 6.7^2}$

$v_r = 13.7 m/s$

so the net speed of Robin with respect to ground will be 13.7 m/s

7 0

3 years ago

You are riding a bicycle. You apply a forward force of 150 N, and you and the

ella [17]

Answer:

B. 0.60 m/s2

- Hope this helped!

3 0

3 years ago

Read 2 more answers

An ellipse has two focal points. One of the focal points is the _____. earth, moon, or Sun

Rasek [7]

An ellipse has two focal points. One of the focal points is the <u><em>Sun</em></u>.

Because they planets move faster when they are around the sun.

6 0

2 years ago

Read 2 more answers

An astronaut takes a book onto the space shuttle. An identical book remains on earth . Which statements about the pull of earth'

worty [1.4K]

B. Earth's gravity has a stronger pull on the book when it is on earth than when it is in space.

When objects move farther away from the earth’s, the force of gravity on these objects gradually decline although their mass remains constant.

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2 years ago