Explanation

Formula:

B=μ0​I/2πr​

Where:

• $mu_0 = 4pi times 10^{-7} , text{T·m/A}$ 

• $I = 5 , text{A}$ (current)

• $r = 2,text{cm} = 0.02,text{m}$

Substituting Values:

$$B = frac{4pi times 10^{-7} , text{T·m/A} times 5 , text{A}}{2 times 3.14 times 0.02, text{m}}$$2×3.14×0.02m​

Let’s calculate step by step:

Numerator:

$$4pi times 10^{-7} times 5 = 20pi times 10^{-7}$$

Denominator:

$$2 times 3.14 times 0.02 = 0.1256$$

Now,

$$B = frac{20pi times 10^{-7}}{0.1256}$$0.1256​

$$approx frac{62.8 times 10^{-7}}{0.1256} approx 5 times 10^{-5} , text{T}$$0.1256 ≈5×10^−5T

Explanation

The Zeroth Law states that if two systems are each in thermal equilibrium with a third system

They are in thermal equilibrium with each other.

This defines the concept of temperature.

Explanation

 Magnetic force is a force that acts on moving charged particles, causing them to change their direction of motion, essentially deflecting them. 

Explanation

Maximum height is reached when vertical velocity becomes zero.  

Using the kinematic equation:  

v² = u² - 2gh, with final v = 0,  

h = (vi² * sin²θ) / 2g.

Explanation

Focal length (in meters) = 1 / Power (in diopters)  

f = 1 / 5

= 0.2 m

=20 cm

Explanation

 T = 2π√(L/g)

= 2π√(1/9.8)

≈ 2.006 s

Explanation

1 electron has a charge of 1.6 × 10⁻¹⁹ C  

So, 1 C = 1 / (1.6 × 10⁻¹⁹) = 6.25 × 10¹⁸ electron

Explanation

The bright side of the Moon is the part that reflects sunlight and is visible from Earth.

This side changes shape during phases of the Moon.

Explanation

The bubble in a spirit level is formed by leaving an air gap inside a sealed liquid vial.

This air gap naturally moves to the highest point, helping indicate level alignment.

Explanation

Minerals are raw materials used to make coins, wires, and jewelry due to their physical properties.

Vegetables are living plants and are not made from minerals.