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kondor19780726 [428]
3 years ago
7

Assume that the same amount of current passes through the electromagnets shown. Identify which electromagnet is stronger than th

e electromagnet above.

Physics
2 answers:
kifflom [539]3 years ago
7 0

Answer:

I think it would be the first electromagnetic

hodyreva [135]3 years ago
3 0

First electromagnet

Explanation:

The first electromagnet is the strongest and it is stronger than the given electromagnet above.

An electromagnet is a temporary magnet made by passing current through a wire wounded round an iron core or metallic core.

  • When current is passed through, the metal becomes magnetic.
  • The strength of the electromagnet depends on the number of coil round the metal core and also the intensity of current passed through it.
  • The higher the number of coils wounded round the metal core, the stronger the electromagnet that will be produced.
  • Also, the higher the intensity of electricity passed through the wire, the stronger it is.

learn more:

Electromagnet brainly.com/question/2191993

#learnwithBrainly

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A unit of area, often used in measuring land areas, is the "hectare", defined as 104 m2. An open-pit coal mine consumes 72 hecta
lara31 [8.8K]

Answer:

0.018 km³

Explanation:

Area of land

A=72\times 10^4\ m^2

D = Depth of land = 25 m

Volume is given by

V=AD\\\Rightarrow V=72\times 10^4\times 25\\\Rightarrow V=18000000\ m^3

Converting to cubic kilometers

1\ m=\dfrac{1}{1000}\ km

1\ m^3=\dfrac{1}{1000^3}\ km^3

18000000\ m^3=18000000\times \dfrac{1}{1000^3}=0.018\ km^3

The volume of Earth removed is 0.018 km³

5 0
4 years ago
Anna Litical and Noah Formula are experimenting with the effect of mass and net force upon the acceleration of a lab cart. They
mamaluj [8]

Answer:

Explanation:

a net force of F causes a cart with a mass of M to accelerate at 48 cm/s/s.

F = M x 48

Mass M = F / 48

a )

When force = 2F and mass = M

Acceleration = force / mass

= 2F /F/48

= 48 X 2 = 96 cm/s²

b )

When force = F and mass = 2M

Acceleration = force / mass

= F /2F/48

=  24 cm/s²

c )

When force = 2F and mass = 2M

Acceleration = force / mass

= 2F /2F/48

=  48  cm/s

d )

When force = 2F and mass = 4M

Acceleration = force / mass

= 2F /4F/48

=  24  cm/s

e)

When force = 4F and mass = 2M

Acceleration = force / mass

= 4F / 2M

= 4F / 2 F/48

= 48 x 2

Acceleration  = 96 cm/s²

7 0
4 years ago
Rudy plans to conduct an experiment using three rosebushes of the same variety and size. His hypothesis is that the plant
Gala2k [10]

Answer: B) He has too many independent variables.

Explanation: Nothing in the experiment is a constant or being measured.

5 0
3 years ago
The friends are ready to try a problem. A battery has an emf of 12.0 V and an internal resistance of 0.05 Ω. Its terminals are c
Zanzabum

Answer:

Terminal voltage = 11.5 V

Power across load = 119.7 W

Power across internal resistance = 5.4 W

Power delivered by battery = 125.2 W

Explanation:

The current in the circuit is given by

I=\dfrac{E}{R+r}

where E is the emf of the battery, R us the load resistance and r is the internal resistance.

I=\dfrac{12}{1.1+0.05} = 10.43 \text{ A}

The terminal voltage is the potential difference across the load resistor.

V = I × R = 10.43 A × 1.1 Ω = 11.5 V

The power across any resistance is given by I^2R

For the load resistor,

P_L=10.43^2\times1.1 = 119.7 \text{ W}

For the internal resistance,

P_r=10.43^2\times0.05= 5.4\text{ W}

The power delivered by the battery is

P = P_L + P_r = 119.7 + 5.4 = 124.1 \text{ W}

This could also be found by

P = IE = 10.34\times12 = 125.2 \text{ W}

The discrepancy in both answers is due to the approximations. The second answer is better.

4 0
4 years ago
An electric pole casts a shadow of 24 m long . If the tip of the shadow is 25m far from the top of the pole , how high is the po
Vikentia [17]

Answer:

7 m

Explanation:

a^ + b^=c^

a^ + 24^=25^

a^+576=625

a^=625-576

a^=49

a=7

7 0
3 years ago
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