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2 years ago

The following are secondary sources of energy except a.coal b crude oil c nuclear d wind e wood

Physics

1 answer:

monitta2 years ago

8 0

Answer:

d) Wind

Explanation:

Secondary energy is energy produced by converting energy available in its natural state in the environment. Hence Wind is a primary source not a secondary source

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(please help i gotta turn this in a few minutes 10 points!)

pogonyaev

Answer:

3a, 2b,4c,1d

Explanation:

what do I need to explain just something you know

7 0

3 years ago

"Two long parallel wires 24.0 cm apart carry currents of 3.0 A and 8.0 A in the same direction. How far from the wire carrying 3

avanturin [10]

Answer:

6.5454 m

Explanation:

Let the distance from the wire carrying 3 A current is x

Then the distance from the the carrying current 8 A is 24-x

We know that magnetic field due to long wire is given by $B=\frac{\mu _0i}{2\pi r}$

It is given that magnetic field is zero at some distance so

$\frac{\mu _0i_1}{2\pi x}=\frac{\mu _0i_2}{2\pi (24-x)}$

Here $i_1=3\ A \ and\ i_2=8\ A$

So $\frac{3}{x}=\frac{8}{24-x}=6.5454\ m$

3 0

3 years ago

The activity of a radioisotope is found to decrease 40% of its original value in 2.59 x 10 s.

Rainbow [258]

Answer: $0.0353\ s^{-1}$

Explanation:

Given

Radioactive material is found to decrease 40% of its original value in $2.59\times 10\ s$

Sample at any time is given by

$N=N_oe^{-\lambda t}$

where, $\lambda=\text{decay constant}$

Put values

$\Rightarrow 0.4N_o=N_oe^{-\lambda\cdot 2.59\times 10}\\\Rightarrow 0.4=e^{-\lambda\cdot 2.59\times 10$

Taking natural logarithm both side

$\Rightarrow \lambda=\dfrac{\ln 2.5}{25.9}\\\\\Rightarrow \lambda =0.0353\ s^{-1}$

8 0

3 years ago

What type of electromagnetic radiation does chandra collect?

rusak2 [61]

<span>The answer is X-rays.<span> </span>Chandra observes the universe in X-ray vision. The observatory has helped astronomers discover black holes, dark matter, quasars, and supernovas and see beyond regions in the universe past that have high temperatures and very high luminosity. It has allowed us to see the universe beyond our visual capacity (visible light of the electromagnetic spectrum). </span>

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3 years ago

FONTE: JBC w our tree to eat por Pirage B097 VO DED expleyo 2. How do you feel about it? (Are you happy? A little bit sad? Conte

xxTIMURxx [149]

Answer:

sorry kilqngqn kolqng ng point

Explanation:

sorry tlaga please pa heart nlang please

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3 years ago