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schepotkina [342]
3 years ago
11

Which is the fundamental law of energy?

Physics
2 answers:
Mkey [24]3 years ago
6 0
Energy cannot be created nor be destroyed
katrin [286]3 years ago
4 0
The first law<span>, also known as </span>Law<span> of Conservation of </span>Energy<span>, states that </span>energy<span>cannot be created or destroyed in an isolated system. The second </span>law<span> of thermodynamics states that the entropy of any isolated system always increases.

</span>
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An electron enters a region of uniform perpendicular en and bn fields. it is observed that thevelocity nv of the electron is una
konstantin123 [22]
<span>v is perpendicular to both E and B and has a magnitude E/B</span>
5 0
3 years ago
PLEASE HELP ASAP WILL REWARD BRAINLIEST:))
laiz [17]

Answer:

120s^-1

Explanation:

v=12v

I=10A

and since rate is with time, therefore rate=energy/time.

H=IV

10×12=120/s

therefore the rate is 120s^-1

6 0
2 years ago
Pls help I’m in a middle of a test and I can’t find the answer
EastWind [94]

Answer:

I believe the answer is B.

5 0
1 year ago
Read 2 more answers
What is the vertical acceleration of a paper airplane that is launched horizontally with an initial velocity of 2.3 m/s?
mr_godi [17]

Answer:

<em>The vertical acceleration is -9.81 m/s^2</em>

Explanation:

When a body is projected, the body experiences an acceleration in the vertical axis that is proportional to the acceleration due to gravity of the earth, which is equal to 9.81 m/s^2. In this case, the acceleration acts to stop the vertical motion of the paper plane, and hence is a deceleration, which explains the negative vertical acceleration.

8 0
3 years ago
Part A By what distance do two objects carrying 1.0 C of charge each have to be separated before the electric force exerted on e
aalyn [17]

Answer:

Part A: <em>4.74×10⁴ m</em>

P<em>art </em>B<em>: </em>0.000211 C

Explanation:

Part A:

From coulombs law,

F  = kq²/r²........................ Equation 1

Note: The two object are carrying equal charges.

Where F = Electric force, q = charge, r = distance of separation, k = proportionality constant

<em>Given: F = 4.0 N, q = 1.0 C, </em>

<em>Constant: k = 1/4πe₀ = 9×10⁹ Nm²/C²</em>

<em>Substituting these values into equation 1,</em>

<em>4 = 9×10⁹(1²)/r²</em>

<em>r² = (9×10⁹)/4</em>

<em>r² = 2.25×10⁹</em>

<em>r = √(2.25×10⁹)</em>

<em>r = 4.74×10⁴ m.</em>

<em>Part 2:</em>

<em>F = kq²/r²</em>

<em>Making q the subject of the equation</em>

<em>q = √(Fr²/k)........................... Equation 2</em>

Where: F = 4.0 N, r = 1.0 m, k = 9×10⁹ Nm²/c²

Substituting these values into equation 2

q = √(4×1²/(9×10⁹ )

q = 2.11/10⁴

q = 0.000211 C.

6 0
3 years ago
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