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svp [43]
3 years ago
15

the pressure inside a latex balloon is nearly the same as the pressure outside. if you let a helium balloon go, and if, as it ri

ses, it stays at a constant temperature, the volume of the balloon will
Physics
1 answer:
olga_2 [115]3 years ago
3 0

Answer:       If you let a helium balloon go, and if, as it rises, it stays at a constant temperature, the volume of the balloon will. The magnitude of the buoyant force is equal to the weight of the amount of fluid that has the same total volume as the object.

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3 years ago
Calculate the phase angle (in radians) for a circuit with a maximum voltage of 12 V and w-50 Hz. The voltage source is connected
Vinvika [58]

Answer:

The phase angle is 0.0180 rad.

(c) is correct option.

Explanation:

Given that,

Voltage = 12 V

Angular velocity = 50 Hz

Capacitance C= 20\times10^{-2}\ F

Inductance L=20\times10^{-3}\ H

Resistance R=  50\ Omega

We need to calculate the impedance

Using formula of impedance

z=\sqrt{R^2+(\omega L-\dfrac{1}{\omega C})^2}

z=\sqrt{50^2+(50\times20\times10^{-3}-\dfrac{1}{50\times20\times10^{-2}})^2}

z=50.00

We need to calculate the phase angle

Using formula of phase angle

\theta=\cos^{-1}(\dfrac{R}{z})

\theta=\cos^{-1}(\dfrac{50}{50.00})

\theta=0.0180\ rad

Hence, The phase angle is 0.0180 rad.

3 0
4 years ago
Why is ultraviolet radiation considered more dangerous to humans than infrared radiation?
Firdavs [7]
Answer is in the question :)
7 0
3 years ago
PLZZ HELP!!!<br> When a star is undergoing nuclear fusion what type of radiation will be found?
zimovet [89]

Answer:

I think the correct answer would be the third option. As the elements around the star begins to emit more and more electromagnetic radiation, the rocky materials are pulled in by the electromagnetic radiation. They are being drawn closer to the star and there would be a very high chance of a nuclear

Explanation:

6 0
3 years ago
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Flauer [41]

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Explanation:

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3 years ago
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