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Salsk061 [2.6K]
3 years ago
9

According to relativity theory, if a space trip finds a son or daughter biologically older than his or her parents, then the spa

ce trip is taken by the
A. According to relativity theory, if a space trip finds a son or daughter biologically older than his or her parents, then the space trip is taken by theB. Parents.C. EitherD. Neither, it can't be done
Physics
1 answer:
Valentin [98]3 years ago
5 0

Answer:

B. parents

Explanation:

one of the conclusions from Einsteins relativity theory for his equation E=mC^{2} (where E is energy, m is mass and C is the speed of light),

is that time moves relative to the observer. Time moves more slowly when the observer is in motion (time dilation), therefore an individual in motion ages more slowly than someone at rest. This in fact happened when astronaut Scot Kelly spent nearly a year on board the international space station and on his return, his twin brother had aged slightly faster than him. In conclusion, if a space trip finds a son or daughter is biologically older than his or her parents, the space trip was taken by the parents.

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The display of the aurora and the reflection of radio waves back to earth result from the _____.
Tasya [4]

The layer of electrically charged molecules and atoms which spans 40-250 miles above ground called ionosphere causes the display of the aurora and the reflection of radio waves back to earth.

8 0
3 years ago
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What is needed for a complete circuit? a Charge flows along a complete conducting path b High Resistance c Wires connected to a
Ilia_Sergeevich [38]

Answer:

a Charge flows along a complete conducting path

Explanation:

6 0
2 years ago
How much work is done (by a battery, generator, or some other source of potential difference) in moving Avogadro's number of ele
konstantin123 [22]

Answer:

-1486 KJ

Explanation:

The work done by an electric field on a charged body is:

W = ΔV * q

where ΔV = change in voltage

q = total charge

The total charge of Avogadro's number of electrons is:

6.0221409 * 10^(23) * -1.6023 * 10^(-19) = -9.65 * 10^(4)

The change in voltage, ΔV, is:

9.20 - (6.90) = 15.4

Therefore, the work done is:

W = -9.65 * 10^(4) * 15.4 = -1.486 * 10^6 J = -1486 KJ

The negative sign means that the motion of the electrons is opposite the electrostatic force.

5 0
2 years ago
A 12-V DC automobile head lamp is to be used on a fishing boat with a 24-V power system. The head lamp is rated at 50 W. A resis
spin [16.1K]

Answer:

The  resistance is  R  =  2.88 \ \Omega

Explanation:

From the question we are told that

    The  voltage  rating of the headlamp is  V_1  =  12 \ V

     The  voltage of the power system is  p =  24 \  V

     The  power rating of the headlamp  is  P  =  50 W

Generally the power which the resistor dissipates is mathematically represented as

      P  =  V_L *  I

=>       50 =  12 *  I

=>   I  =  4.1667 \  A

Generally the resistance is

      R  =  \frac{V_1 }{I}

      R  =  \frac{12 }{4.1667}

      R  =  2.88 \ \Omega

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3 years ago
!!! i'll give brainliest to whoever can answer this for me !!!
Agata [3.3K]

Answer:

you have to match the letters in the picture to the list of energy types

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3 years ago
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