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Sever21 [200]
3 years ago
11

A copper wire has a circular cross section with a raduis of 1.25mm. If the wire carries a current of 3.70A, find the drift speed

of electron in this wire.
Physics
1 answer:
alexdok [17]3 years ago
4 0

Answer: 0.043mm/s

Explanation:

The drift speed of electron in this wire will ba calculated as:

= I/nqA

= I/nqπr²

= 3.7/[(1.1 × 1^29) × (1.6 × 10^19) × (3.14 × 0.00125²)

= 4.3 × 10^-5

= 0.043mm/s

The drift speed of the electron in this wire is 0.043mm/s.

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A mass of 148 g stretches a spring 13 cm. The mass is set in motion from its equlibrium position with a downward velocity of 10
Charra [1.4K]

Answer:

u(t)=1.15 \sin (8.68t)cm

0.3619sec

Explanation:

Given that

Mass,m=148 g

Length,L=13 cm

Velocity,u'(0)=10 cm/s

We have to find the position u of the mass at any time t

We know that

\omega_0=\sqrt{\frac{g}{L}}\\\\=\sqrt{\frac{980}{13}}\\\\=8.68 rad/s

Where g=980 cm/s^2

u(t)=Acos8.68 t+Bsin 8.68t

u(0)=0

Substitute the value

A=0\\u'(t)=-8.68Asin8.68t+8.68 Bcos8.86 t

Substitute u'(0)=10

8.68B=10

B=\frac{10}{8.68}=1.15

Substitute the values

u(t)=1.15 \sin (8.68t)cm

Period =T = 2π/8.68

After half period

π/8.68 it returns to equilibruim

π/8.68 = 0.3619sec

6 0
3 years ago
A piece of metal has a mass of 10g and a mass of 2cm
qwelly [4]

Answer:

so whats the  questain?!

Explanation:

idgi

3 0
2 years ago
Neon has 10 protons and 10 electrons. How many additional electrons would it take to fill the outer (second) electron shell?
Yakvenalex [24]
None because Neon is already stable
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true or false? destructive interference occurs when a trough meets up with another trough given location along the medium
disa [49]

Answer:Poopy-di scoop

Scoop-diddy-whoop

Whoop-di-scoop-di-poop

Poop-di-scoopty

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If two equal forces act on an object in opposite directions, what is the net
labwork [276]

Answer:

Net Force = 0

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3 years ago
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