Explanation

When pulling, part of the force acts upward, reducing normal force.

Lower normal force means less friction, making it easier to move the object.

Explanation

A generator works on Faraday’s Law of Electromagnetic Induction, producing electricity when a conductor moves in a magnetic field.

It converts mechanical energy into electrical energy using electromagnetic induction.

Explanation

Explanation

Radiation transfers heat through electromagnetic waves and does not require a medium.

For example, the Sun's heat reaches Earth through radiation.

Explanation

Explanation

• Given: Mass on Earth = 100 kg
• If an object has mass "m "on Earth, the mass would remain the same on the moon.
  • ​So the mass of the object on the moon is 100 kg.

Mistake Points

• The weight of the human on the moon will change and will be 1/6th of the weight on earth because of the moon's weak gravitational impact.
• Weight on Moon = (Mass on Earth) x 1/6
• Weight on Moon = 100 / 6 = 16.7 kg.

Explanation

A transformer can either convert high AC to low AC voltages or low AC to high AC voltages.

It functions through electromagnetic induction, adjusting voltage levels without changing from AC to DC.

Explanation

The Northern Hemisphere is generally warmer than the Southern Hemisphere.

This is because it has more landmass, which heats up faster than water.

This contributes to higher average temperatures.

Explanation

Radiation was discovered by Henri Becquerel in 1896.

When he observed that uranium salts emitted rays that could fog photographic plates.

It leading to the study of radioactivity.

Explanation

The mass of Earth is approximately 6.0 x 10^24 kilograms (5.98 x 10^24 kg).

This is a widely accepted scientific value, based on various measurements and calculations, including:

• Gravity measurements
• Satellite orbits
• Seismological data
• Planetary formation models