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Tomtit [17]
3 years ago
11

A simple AC generator consists of a single loop of wire rotating 50 times per second within a magnetic field. The loop is a rect

angle 5cm by 12 cm. The field strength is 0.21 T. What is the peak output emf?
Physics
1 answer:
Katen [24]3 years ago
6 0

Answer:

39.56 x 10⁻² V

Explanation:

Peak emf in a rotating coil

= n BAω

Where n is no of turns of coil , B is magnetic field , A is area of coil and ω is angular velocity of rotation of coil

Here n = 1

B = .21 T

A = 5 X 12 X 10⁻⁴ = 60 X 10⁻⁴

ω = 2π X 50 = 100π

Emf = 1 x .21 x 60 x 10⁻⁴ x 100 x 3.14

=  39.56 x 10⁻² V

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What is the equivalent resistance between points A and C if R1=1430, R2=1350, R3=1100, R4=1350, and R5=1150.
Marianna [84]

R1 + R4 = 1430 + 1350 = 2780 = R14    series combination of R1 & R4

R2 + R5 = 1350 + 1150 = 2500 = R25

The circuit has been reduced to 3 resistors in parallel

R314 = 2780 * 1100 / (2780 + 1100) = 788  this is the resistance of the parallel combination of R14 and R3

R31425 = 2500 * 788 / (2500 + 788) = 599 which is the equivalent of the circuit  - you can also use the formula for 3 resistors in parallel but this seems simpler

7 0
3 years ago
The surface temperature of a planet depends on both the distance of the planet from the Sun and on how the panet's atmosphere di
BaLLatris [955]

Answer:

Aphelion: 6404 W/m2

Perihelion: 14978 W/m2

Explanation:

The solar energy flux depends on the solar power output divided by the surface of a sphere with a radius equal to the distance to the Sun.

\Phi sol = \frac{Psol}{4 * \pi * d^2}

The distances we need are the aphelion and perihelion of Mercury.

Planetary orbits are ellipses. In an ellipse the eccentricity is related to linear eccentricity and the length of the semi major axis:

e = \frac{c}{a}

Where

e: eccentricity

c: linear eccentricity

a: semi major axis

The linear eccentricity is equal to the distance of the focus of the center of the ellipse.

c = a * c =

a = 0.39 AU = 5.83e10 m

c = 5.83e10e * 0.21 = 1.22e10 m

In planetary orbits the Sun is in one of the fucuses. With this we can calculate the prihelion and aphelion as:

Ap = a + c = 5.83e10 + 1.22e10 = 7.05e10 m

Pe = a - c = 5.83e10 - 1.22e10 = 4.61e10 m

And the solar energy fluxes will be:

\Phi Ap = \frac{4e26}{4 * \pi * 7.05e10^2} = 6404 W/m2

\Phi Pe = \frac{4e26}{4 * \pi * 4.61e10^2} = 14978 W/m2

4 0
3 years ago
What is the speed of the object between 60 to 70 seconds?
lyudmila [28]

We have that the speed of the object between 60 to 70 seconds

V=\frac{d}{65}

From the question we are told

The speed of the object between 60 to 70 seconds

Generally the equation for Average speed   is mathematically given as

V=\frac{d}{t}

Where

t=\frac{60+70}{2}\\\\t=65seconds

Therefore

V=\frac{d}{65}

In conclusion

The speed of the object between 60 to 70 seconds

V=\frac{d}{65}

For more information on this visit

brainly.com/question/23379286?referrer=searchResults

5 0
3 years ago
A substance is soluble in water. It is added into the water and dissolves. More solute continues being added until it reaches a
Sophie [7]

Answer:

option D

Explanation:

also to add.... there exists a solubility equilibrium between solid solute and the solution.

4 0
4 years ago
briefly discuss the phenomenon of childhood maltreatment in the context of five different psychological perspectives
Butoxors [25]

Answer:

Child maltreatment or child abuse is a phenomenon of sexual, physical,  and/or psychological abuse of children.

Five different psychological perspectives of childhood maltreatment are as follows:

  • Poverty is one of the biggest cause of childhood maltreatment that impact once psychological health.
  • Child do not get proper care from their parents.
  • Childrens are emotionally weak and anything negative thought can depress them.
  • Lack of communication sometimes make children underconfident.
  • Social descrimination on the basis of race and gender can impact a child psychological balance.

6 0
3 years ago
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