Explanation

To find the angle in radians per second, first convert the rpm (revolutions per minute) to radians per second.

3000 rpm =  3000/60 ​revolutions per second =  50 revolutions per second.

Each revolution is  2π radians.

So, 

50×2π=100π radians per second.

Explanation

The vector product (cross product) of two vectors gives a vector that is perpendicular to both original vectors.

Angular momentum is a vector product of position and linear momentum vectors.

Explanation

All the listed fields (gravitational, electric, and magnetic) are conservative fields.

In conservative fields, the work done moving a particle between two points is independent of the path taken.

Explanation

Brittle materials are those that break easily under stress.

Explanation

The functioning of a loudspeaker depends on both its shape and size.

As these factors influence the quality and direction of sound output.

Explanation

Decibels measure sound intensity (amplitude)

Sound is energy that travels in waves.

It can be measured in two ways: frequency and amplitude.

Explanation

In a DC (direct current) circuit, the most fundamental and commonly referenced basic circuit element is the resistor.

Here's why:

Resistor: In a DC circuit, a resistor is used to control the current and voltage levels.

It provides a specific amount of resistance, which determines how much current will flow for a given voltage according to Ohm's Law (𝑉 = 𝐼/𝑅).

Explanation

• When light travels from a denser to a rarer medium, it bends away from the normal due to refraction.
• The production of an image by or as if by a mirror is called reflection.

Explanation

The hardest substance in the world is diamond.

Its hardness is due to the strong covalent bonding between its carbon atoms.

This making it the most resistant to scratching.

Category: Native minerals

Cleavage: 111 (perfect in four directions)

Crystal class: Hexoctahedral (m3m); H-M symbol: (4/m 3 2/m)

Crystal habit: Octahedral

Crystal system: Cubic

Dana classification: 1.3.6.1

Density: 3.5–3.53 g/cm3 3500–3530 kg/m3

Explanation

A moving ball stops due to the action of frictional force.

Friction opposes the motion of the ball, gradually reducing its speed until it comes to a stop.