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White raven [17]
3 years ago
5

According to the law of conservation of energy, the total amount of energy in the universe does not change, but remains constant

.
True
False
Physics
2 answers:
Evgen [1.6K]3 years ago
6 0
<span>The statement : According to the law of conservation of energy, the total amount of energy in the universe does not change, but remains constant - is TRUE. The main point which led me to decide is that our universe is the example of a closed system which means there's nothing inside. Hope you will agree with my opinion.
</span>
vovikov84 [41]3 years ago
6 0

Answer:true

Explanation:had the same question and got it right its true

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An elastic band is hung on a hook and a mass is hung on the lower end of the band. When the mass is pulled downward and then rel
GrogVix [38]

Explanation:

An elastic band is hung on a hook and a mass is hung on the lower end of the band. When the mass is pulled downward and then released, it vibrates vertically. The equation of motion is given by :

s=6cos\ t+3sin\ t

Where

s is in centimeters

t is in seconds

Velocity of the particle, v=\dfrac{ds}{dt}

v=\dfrac{d(6cos\ t+3sin\ t)}{dt}

v=3cos\ t-6sin\ t

Acceleration of the particle, a=\dfrac{dv}{dt}

v=\dfrac{d(3cos\ t-6sin\ t)}{dt}

v=-6cos\ t-3sin\ t

Hence, this is the required solution.

6 0
4 years ago
Suppose, you are given three capacitors C1 = 2.0μF, C2 = 4.0μF, and C3 = 6.0μF.
Ymorist [56]

Answer:

1.a) Cmax = 12μF

 b) Cmin = 1.09μF

2.a) E1/E2 = 2

  b) E1/E2 = 0.5

Explanation:

For the maximum Capacitance, we have to connect them in parallel. In this configuration, Ct = C1 + C2 + C3 = 12μF

For the minumum Capacitance, we have to connect them in parallel. In this configuration, Ct = (C1^{-1} + C2^{-1} + C3^{-1})^{-1} = 1.09μF

To calculate the energies:

For the minimum capacitance configuration, the charge is the same on all of the capacitors, so:

E1 / E2 = \frac{1/2*Q^2/C1}{1/2*Q^2/C2} = C2 / C1 = 2

For the maximum capacitance configuration, the voltage is the same on all of the capacitors, so:

E1 / E2 = \frac{1/2*C1*V^2}{1/2*C2*V^2} = C1 / C2 = 0.5

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3 years ago
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3 years ago
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UNO [17]
I believe the answer is <span>A</span>.
8 0
3 years ago
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cluponka [151]
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