Explanation

• The relationship between voltage, current, and resistance is described by Ohm’s Law.
• It states that current is directly proportional to voltage and inversely proportional to resistance.
• The mathematical form is V = IR.

Last verified on 09-06-2026

Explanation

• Nitrogen makes up about 78% of the Earth’s atmosphere.
• Oxygen is about 21%,
• Other gases like argon and carbon dioxide are in very small amounts.

Last updated by NA on 28April 2026

Explanation

• The velocity of a car moving in a circle is variable.
• Although speed may remain constant, direction is continuously changing.
• Since velocity depends on both speed and direction, it keeps changing.
• This type of motion is called circular motion.
• Therefore, velocity is not constant in circular motion.

Last verified on 09-06-2026

Explanation

• Mars is known as the Red Planet
• Because its surface is covered in iron oxide (rust) and has an orange-red appearance
• Fourth planet from the Sun
• Symbol ♂
• The largest volcano is Olympus Mons.
• Two moons: Deimos and Phobos.

Question updated on 08 march 2026

Explanation

Formula: °F = (9/5)°C + 32  

° F = (9/5)(50) + 32 = 90 + 32 = 122°F

So 50°C feels pretty hot - about 122°F.

Last verified on 09-06-2026