Laws of motion: find the time, A thin rod of length 1 m is fixed in a verti...

A thin rod of length 1 m is fixed in a vertical position inside a train, which is moving horizontally with constant acceleration 4 m/s2. A bead can slide on the rod, and friction c

Motion angular velocity, A scooterist is racing at a speed of 72 km per hou...

A scooterist is racing at a speed of 72 km per hour. If the radius of the wheel is 20 cm, find the angular speed of the wheels.   Ans) 72kmph=20m/s 20cm=0.2m; v=rw w=v/r w=20/0

Can you explain solenoidal field, Can you explain solenoidal field? Describ...

Can you explain solenoidal field? Describe with example?

Modulus of elasticity, (a). Modulus of elasticity and modulus of rigidity a...

(a). Modulus of elasticity and modulus of rigidity are important parameters to measure mechanical properties of materials. With the aid of drawings, explain these parameters and gi

Ferrites are which type of material, Ferrites are (A) Ferromagnetic ma...

Ferrites are (A) Ferromagnetic material. (B) Ferrimagnetic materials. (C) Anti ferromagnetic material. (D) Diamagnetic materials. Ans: Ferrites are ferro

Explain about the number of modes in the optical fibres, Explain about the ...

Explain about the number of modes in the optical fibres. Mode in the optical fibres: A mode is a path occupied by a ray of light through an optical fibre. This is a mathemat

Michelson interferometer diagram,

What is the velocity of the needle, A record player's needle is 6.5 cm from...

A record player's needle is 6.5 cm from the center of a 45-rpm record. Calculate velocity of the needle?

Relativity, at what velocity a clock should move so that it seems slow by o...

at what velocity a clock should move so that it seems slow by one minute in a day?

Movement of charge, MOVEMENT OF CHARGE: Although electric current is re...

MOVEMENT OF CHARGE: Although electric current is referred to as the flow of electrons through a conductor, it should be noted that more exactly, any movement of electric charge