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Harrizon [31]
3 years ago
7

The earth's surface absorbs ------of the sun's energy that reaches it.

Physics
2 answers:
RideAnS [48]3 years ago
7 0

Answer:

C

Explanation:

three-quarters

n200080 [17]3 years ago
6 0

Answer:

D): The Earth`s surface <u>absorbs </u><u>half</u> the sun`s energy when it reaches it.

Explanation:

When <u><em>solar energy is absorbed partially from the Earth`s surface</em></u> it is <u><em>absorbed as heat</em></u>.

(Wrote this off my notes, your welcome)

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An electron moves at a speed of 1.0 x 104 m/s in a circular path of radius 2 cm inside a solenoid. The magnetic field of the sol
iogann1982 [59]

Answer:

(a) B = 2.85 × 10^{-6} Tesla

(b) I =  I = 0.285 A

Explanation:

a. The strength of magnetic field, B, in a solenoid is determined by;

r = \frac{mv}{qB}

⇒ B = \frac{mv}{qr}

Where: r is the radius, m is the mass of the electron, v is its velocity, q is the charge on the electron and B is the magnetic field

B = \frac{9.11*10^{-31*1.0*10^{4} } }{1.6*10^{-19}*0.02 }

  = \frac{9.11*10^{-27} }{3.2*10^{-21} }

B = 2.85 × 10^{-6} Tesla

b. Given that; N/L = 25 turns per centimetre, then the current, I, can be determined by;

B = μ I N/L

⇒    I = B ÷ μN/L

where B is the magnetic field,  μ is the permeability of free space = 4.0 ×10^{-7}Tm/A, N/L is the number of turns per length.

I = B ÷ μN/L

 = \frac{2.85*10^{-6} }{4*10^{-7} *25}

I = 0.285 A

5 0
3 years ago
Do the following calculation and express the final answer in
sammy [17]

Answer:

Explanation:

I got the same thing. So, i don't know but good luck

3 0
1 year ago
Something that can not be used up or depleted​
Jet001 [13]

Answer:

oxygen

Explanation:

as it is in the air it can't be depleted or used up

5 0
3 years ago
Read 2 more answers
Hello! needing assistants :p would be well appreciated like alot.
cupoosta [38]
I think the answer is C

6 0
3 years ago
Read 2 more answers
Define oxygen and it's uses
Svetradugi [14.3K]

Answer:

Oxygen is a colorless, odorless gas and it is a life supporting component of the air.

It can be used commonly for one of these 3 things:

1. Respiration

2. Metallurgy

3. Rocketry

Hope it helps! : )

3 0
3 years ago
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