Explanation

• Comets: huge masses of snow and rocks that revolve around the Sun in orbits.
• Comets: have huge glowing tails.
• Halley's Comet was last seen in: 1986
• Halley's Comet will be next seen in: 2062

Explanation

A voltmeter is used to measure the potential difference (voltage) across two points in a circuit.

It is connected in parallel with the component whose voltage is being measured.

Explanation

Cryptography is the art and science of keeping information secure from unintended audiences, of encrypting it.

It is also called Crytology.

The term was first introduced in 1553.

Explanation

Earth's circumference (the distance all the way around the equator) is 24,901 miles (40,075 kilometers).

Its diameter (the distance from one side to the other through Earth's center) is 7,926 miles (about 12,756 kilometers).

Density: 5.51 g/cm3

Age: 4.453 billion years

Explanation

The distance traveled by a body in unit time is called the speed of the body.

S.I. unit of speed is meter per second (ms−1).

ND11623

Explanation

Explanation

Calcium is the most abundant mineral in the human body,

calcium makes up 1.5 to 2% of the total body weight.

Approximately 1,200 g of calcium is present in the body of an adult human

more than 99% of that amount is found in bones.

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ND11-12-2022

Explanation

One nautical mile per hour is equal to 1 knot.

One nautical mile is equal to 6,076 feet (1,852 meters/kilometers).

Explanation

Glucose, a form of sugar, is the primary source of energy for every cell in the body.

Because the brain is so rich in nerve cells, or neurons, it is the most energy-demanding organ, using one-half of all the sugar energy in the body.

Explanation