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34kurt
3 years ago
6

Convection is thermal energy transferred (5 points) A only by moving air currents B only by moving liquids C by either moving li

quids or moving air currents D without moving anything\
Physics
1 answer:
ZanzabumX [31]3 years ago
5 0
The answer is A. only by moving air currents. 
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what branch of Science studies matter and energy and the way they work together with force to cause motion
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Which trophic level has the least available energy in kilojoules in this food web?
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2 years ago
A hurricane sweeps across the ocean and damages the houses of people living along the coast. Which of these does not play any ro
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3 years ago
Read 2 more answers
A rectangular loop with dimensions 4.20 cm by 9.50 cm carries current I. The current in the loop produces a magnetic field at th
tiny-mole [99]

Answer:

I=1.48 A

Explanation:

Given that

B=3.1 x 10⁻5 T

b= 4.2 cm

l= 9.5 cm

The relationship for magnetic field  and current given as

B=\dfrac{2\mu _oI}{\pi}D

Where

D=\dfrac{\sqrt{l^2+b^2}}{lb}

By putting the values

D=\dfrac{\sqrt{l^2+b^2}}{lb}

D=\dfrac{\sqrt{0.042^2+0.095^2}}{0.042\times 0.095}

D=26.03 m⁻¹

B=\dfrac{2\mu _oI}{\pi}D

3.1\times 10^{-5}=\dfrac{2\times 4\times \pi \times 10^{-7} I}{\pi}\times 26.03

I=\dfrac{3.1\times 10^{-5}}{{2\times 4\times 10^{-7} }\times 26.03}

I=1.48 A

8 0
3 years ago
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