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3 years ago

Which of the following can happen to solar energy after it enters the earths atmosphere?

Physics

2 answers:

AURORKA [14]3 years ago

5 0

Answer:

the answer is A.

Explanation:

The majority of solar energy is absorbed by the earths crust. Almost 54% of it is absorbed by the earths crust.

VikaD [51]3 years ago

4 0

The answer is A. Hope this helps !

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Isotopes have variable numbers of electrons. a. True b. False

allsm [11]

Isotopes have the same number of valence electrons

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3 years ago

What is the displacement current in the capacitor if the potential difference across the capacitor is increasing at 500,000V/s?

konstantin123 [22]

Answer:

$I=2.71\times 10^{-5}\ A$

Explanation:

A 6.0-cm-diameter parallel-plate capacitor has a 0.46 mm gap.

What is the displacement current in the capacitor if the potential difference across the capacitor is increasing at 500,000V/s?

Let given is,

The diameter of a parallel plate capacitor is 6 cm or 0.06 m

Separation between plates, d = 0.046 mm

The potential difference across the capacitor is increasing at 500,000 V/s

We need to find the displacement current in the capacitor. Capacitance for parallel plate capacitor is given by :

$C=\dfrac{A\epsilon_o}{d}\\\\C=\dfrac{\pi r^2\epsilon_o}{d}$ , r is radius

Let I is the displacement current. It is given by :

$I=C\dfrac{dV}{dt}$

Here, $\dfrac{dV}{dt}$ is rate of increasing potential difference

$I=\dfrac{\pi r^2\epsilon_o}{d}\times \dfrac{dV}{dt}\\\\I=\dfrac{\pi (0.03)^2\times 8.85\times 10^{-12}}{0.46\times 10^{-3}}\times 500000\\\\I=2.71\times 10^{-5}\ A$

So, the value of displacement current is $2.71\times 10^{-5}\ A$ .

4 0

3 years ago

If a nucleus decays by successive b, a, a emissions, its mass number will Group of answer choices decrease by seven. decrease by

nirvana33 [79]

Answer:

The mass number will decrease by eight (8).

Explanation:

Given;

successive beta (b), alpha (a), alpha (a) emissions.

Generally, when a radioactive element emits a beta-particle (b), its mass number doesn't increase but its atomic number increases by 1 . $(^{0}_{-1}\beta )$

Also when a radioactive element emits an alpha-particle (a), its mass number decreases by 4, while its atomic number decrease by 2. $(^4_2\alpha)$

For the given question, a successive beta (b), alpha (a), and alpha (a) emissions = (0) + (-4) + (-4) = -8

Thus, when a radioactive element emit a successive beta (b), alpha (a), alpha (a) particles, the mass number will decrease by eight (8).

To learn more, please visit: brainly.com/question/23276969

7 0

3 years ago

Which shows the correct order of events after the big bang occurred? strong force separated from the unified force, inflationary

LUCKY_DIMON [66]

Answer:

C) gravity separated from the unified force, strong force separated from the unified force, inflationary expansion occurred, electromagnetic and weak forces separated from the unified force, quarks and electrons formed

5 0

3 years ago

why does a spark jump from your hand to the doorknob as you reach for the door after walking across a carpeted floor?

Anna11 [10]

because electrical charge builds up otherwise know as static electricity

8 0

3 years ago

Read 2 more answers