Explanation

Explanation

 In an isothermal process, the temperature remains constant, so the internal energy of an ideal gas also remains constant.

Explanation

The direction of the magnetic field lines inside a bar magnet is from south pole to north pole.

This is the opposite direction of the field lines outside the magnet, which go from the north pole to the south pole.

Explanation

the direction of the magnetic field lines gets reversed when the direction of the current flowing through the conductor is reversed.

Explanation

If two metallic conductors have the same resistivity, they can be differentiated based on their temperature coefficient. 

The temperature coefficient of resistivity indicates how much the resistivity of a material changes with a temperature change.

Materials with the same resistivity can have different temperature coefficients, meaning their resistance will change differently as temperature changes. 

Explanation

Explanation

Explanation

To find the minimum external force needed to crack the windows, we can use the formula:

Force (F) = Pressure (P) × Area (A)

Given:

P = 660 kPa = 660,000 Pa (converting kPa to Pa)

Diameter (d) = 0.30 m

Radius (r) = d/2 = 0.15 m

Area (A) = πr² = π(0.15)² ≈ 0.0707 m²

Now, calculate the force:

F = P × A ≈ 660,000 Pa × 0.0707 m² ≈ 46,662 N ≈ 47,000 N

Explanation

Explanation