PHYSICS COLLEGE

At what distance from a long straight wire carrying acurrentof 5.0A is the magnitude of the magnetic field due to the
wireequal to the strength of the Earth's magnetic field of about
5.0 x10^-5 T?

Answers

Answer 1
Answer:

Answer:

The distance is 2 cm

Solution:

According to the question:

Magnetic field of Earth, B_{E} = 5.0* 10^(- 5) T

Current, I = 5.0 A

We know that the formula of magnetic field is given by:

B = \farc{\mu_(o)I}{2\pi d}

where

d = distance from current carrying wire

Now,

d = (\mu_(o)I)/(2\pi B)

d = (4\pi* 10^(- 7)* 5.0)/(2\pi* 5.0* 10^(- 5))

d = 0.02 m 2 cm

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Answers

Answer:

λ = 5.734 x 10⁻⁷ m = 573.4 nm

Explanation:

The formula of the Young's Double Slit experiment is given as follows:

\Delta x = (\lambda L)/(d)\n\n\lambda = (\Delta x d)/(L)

where,

λ = wavelength = ?

L = distance between screen and slits = 8.61 m

d = slit spacing = 1.09 mm = 0.00109 m

Δx = distance between consecutive bright fringes = (4.53\ cm)/(10) = 0.00453 m

Therefore,

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When a 20.0-ohm resistor is connected across the terminals of a 12.0-V battery, the voltage across the terminals of the battery falls by 0.300 V. What is the internal resistance of this battery

Answers

The internal resistance of the battery is 0.5 ohms.

To calculate the internal resistance of the battery, we use the formula below

Formula:

  • (V/R)r = V'............. Equation 1

Where:

  • V = Voltage across the terminal of the battery
  • R = Resistance connected across the battery
  • r = internal resistance of the battery
  • V' = voltage drop of the battery.

Make r the subject of the equation

  • r = V'R/V............ Equation 2

From the question,

Given:

  • V = 12 V
  • R = 20 ohms
  • V' = 0.3 V

Substitute these values into equation 2

  • r = (0.3×20)/12
  • r = 6/12
  • r = 0.5 ohms.

Hence, The internal resistance of the battery is 0.5 ohms.

Learn more about internal resistance here: brainly.com/question/14883923

Answer:

The  internal resistance is  r = 0.5 \ \Omega

Explanation:

From the question we are told that the resistance of

   The  resistance of the resistor is  R = 20.0\ \Omega

    The  voltage is V = 12.0 \ V

     The magnitude of the voltage fall is  e = 0.300\ V

Generally the current flowing through the terminal due to the voltage of the battery  is  mathematically represented as

        I = (V)/(R)

substituting values

        I = (12.0 )/(20 )

       I = 0.6 \ A

The internal resistance of the battery is mathematically represented as

      r = (e)/(I)

substituting values

     r = (0.300)/( 0.6 )

    r = 0.5 \ \Omega

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Answers

Answer:

Lever, pulley and wheel and axle are the types of machine it's grouped to

Explanation:

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Pulley is a simple machine that creates a mechanical advantage and supports the changing of direction for a rope or cable. This is seen in the chain of the bicycle

Levers attached to the bike's pedals are pushed down to direct force into the pulley system.
A bike is compound machine.This means that it is made up of a bunch of different simple machines. Screws are used to hold the pieces together. The wheel of a bicycle is a wheel and axle. The pedals are also examples of this simple machine. The pedals are attached to a lever that turns a pulley.

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Answers

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Trevor and Nick are taxi drivers. Trevor drives a taxi using diesel oil while Nick drives a taxi using LPG. Whose taxi will cause higher levels of air pollution and why?

Answers

Answer:

Trevor's taxi would cause higher levels of air pollution

Explanation:

Trevor's taxi use diesel oil.

Diesel is less cleaner than LPG.

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The time taken by a mass projected verticallyupwards to reach the maximum height (with air
resistance not neglected) is 10 sec. The time of
descent of the mass from the same height will be​

Answers

Answer:

10s

Explanation:

The time to get to the maximum would be the same as the time to get down to the maximum unless somehow gravity’s changes during the duration it goes up to and from maximum height.
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