What is process in which long thin strips of flexible ribbon are produced by pouring onto a flat surface?

Tape casting

Explanation:

Tape casting is also known as knife coating. This process is used specially in the production of thin surfaces of a ceramic work.

Tape casting is also the process which which involves long thin strips of flexible ribbon being produced by pouring onto a flat surface. It is then left to dry by applying a high temperature and then ready for use.

Velocity of proton will be equal to 4500 m/sec

Explanation:

We have given that proton moves right angles through a magnetic field

So angle between magnetic field and velocity of proton is

Magnetic field B = 0.025 Tesla

Charge on proton

Magnetic force on the proton is given

Magnetic force on a moving charge particle is equal to

So

v = 4500 m/sec

So velocity of proton will be equal to 4500 m/sec