Explanation

Magnetization (M) is the product of the magnetic field intensity (H) and the magnetic susceptibility (χ):

M = χH

Given:

χ = 3.7 × 10^-3

H = 10^4 A/m

M = (3.7 × 10^-3) × (10^4 A/m)

= 37 A/m

Explanation

• The formula for the period of a pendulum is T = 2π√(l/g), where l is the length of the pendulum and g is the acceleration due to gravity.
• Since the mass and diameter are doubled, the acceleration due to gravity (g) on the planet will be half that of Earth.
• Therefore, the new period of oscillation will be √2 times the period on Earth, meaning if it was a second's pendulum on Earth, it will be 2√2 seconds on the planet.

Explanation

Explanation

Explanation

Explanation

Explanation

Explanation

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Explanation

For maximum range, the angle of projection should be 45°.

However, since that's not an option, we need to find the angle closest to 45°.
Among the given options:

• - 35° is closer to 45° than 20°.
• - 60° is closer to 45° than 70°.

However, 35° is closer to 45° than 60°.
So, the correct answer is: 35°.