Explanation

Speed = 3000 RPM (revolutions per minute)

Step 1: Convert RPM to revolutions per second (RPS)

Step 2: Convert revolutions to radians

Since 1 revolution = 2π radians:

50 rev/sec×2π= 100π radians/sec

Explanation

Elasticity is the property of a body that enables it to return to its original shape after the deforming force is removed.

Materials like rubber show high elasticity, while clay does not.

Explanation

All the isotopes of the same element have the same number of protons, which defines the element.

Different isotopes can exist depending on the neutron count.

Electrons are negatively charged and can counterbalance the positive charge of protons.

Also, they are present in equal numbers in neutral atoms of the same element.

Explanation

When two resistances are connected in parallel, the net resistance (Rnet) is calculated using the formula:

1/Rnet = 1/R1 + 1/R2

where R1 and R2 are the individual resistances.

In this case, R1 = 6 Ω and R2 = 12 Ω, so:

1/Rnet = 1/6 + 1/12 = 1/4

Rnet = 4 Ω

Therefore, the net resistance of the two resistances connected in parallel is 4 Ω.

Explanation

Electrostatics is the branch of physics that deals with the study of stationary electric charges, also known as static electricity.

It involves the study of electric charges at rest, their properties, and the forces that act upon them.

Explanation

In the ball and bowl system, the mean position (also known as the equilibrium position) is at the center of the bowl.

This is the position where the ball comes to rest when it is not disturbed.

Explanation

Rockets are used to put satellites into orbit around the Earth.

Rockets provide the necessary thrust and velocity to overcome the Earth's gravitational pull and reach the desired altitude and orbit.

Explanation

The physical weight of our body is determined by the pull of gravity on it

ND20-1-2023

Explanation

• If an opaque object is moved closer to the light source, the shadow gets bigger.
• This is because the light source appears larger and more intense from a closer distance, casting a larger shadow.

Explanation