Explanation

Power is calculated as the rate of work done or energy transferred:

Power = Work / Time

= 20 J / 10 s

= 2 W

So, the machine's power output is 2 watts.

Explanation

Diamond is anisotropic because its properties vary depending on the direction in which they are measured.

This is due to its crystalline structure, where the carbon atoms are arranged in a specific lattice.

The bonds between the carbon atoms are strong and are oriented along specific crystal axes.

As a result, diamond exhibits different mechanical strengths, refractive indices,

And other properties depending on the orientation of the crystal axes relative to the applied force or measurement. 

Explanation

Polar orbiting satellites travel over the Earth from pole to pole and are mainly used for collecting weather and climate data.

They provide detailed global coverage, useful for forecasting and environmental monitoring.

Explanation

The bright side of the Moon is the part that reflects sunlight and is visible from Earth.

This side changes shape during phases of the Moon.

Explanation

Boiling a magnet (especially in water) does not generate enough heat to affect its magnetic properties.

In contrast, hammering, heating, or dropping disturb the alignment of magnetic domains, leading to demagnetization.

Explanation

The bubble tube set at a 45° angle is used to check inclined or sloped surfaces.

It helps ensure surfaces are accurately angled.

Explanation

A fuse melts quickly when current exceeds safe limits due to its low melting point.

This breaks the circuit and prevents damage to appliances or wiring.

Explanation

A star with an initial mass between 1 to 5 times the solar mass expands into a red giant and then collapses into a white dwarf.

A white dwarf is a dense, Earth-sized remnant of a star that has exhausted its nuclear fuel.

Explanation

Explanation

The inner cylinder that carries light.

It's made of glass or plastic.

It has a high refractive index. 

The middle cylinder that surrounds the core.

It has a lower refractive index.

It's typically made of glass, plastic, or silicone.

The outer layer that protects the fiber.

It's usually made of plastic or another material.