In the nucleus of 20 ca 40 there are, In the nucleus of 20 Ca 40   there ...

In the nucleus of 20 Ca 40   there are: (1) 40 protons and 20 electrons (2) 20 protons and 40 electrons  (3) 20 protons and 20 neutrons (4) 20 protons and 40 neutrons

Physics, plz

plz

What is solenoid? , A solenoid is a coil wound into a tightly packed helix...

A solenoid is a coil wound into a tightly packed helix. In physics, the term solenoid shows  a long, thin loop of wire, often wrapped over a metallic core, which makes a magnetic f

Can a solid and liquid together be possible, Can a solid and liquid togethe...

Can a solid and liquid together be possible? Actually, substances can exist in all three states of matter concurrently if the conditions are right. The triple point of a substa

Importance of engineering materials, Materials are an essential part of an ...

Materials are an essential part of an engineering study. An engineer requires materials to provide shape to his concept and design. Selection of the right material job in the first

Define electromotive force, Electromotive force EMF (ξ) - This is the elec...

Electromotive force EMF (ξ) - This is the electrical energy from an ideal battery with no internal resistance.  It is also the open circuit value of a battery (no current is drawn

Determine the b-h curves, Figure  shows the magnetic circuit of a relay. ...

Figure  shows the magnetic circuit of a relay. When each of the air gaps are 1.5mm wide find the mmf required to produce a flux density of 0.75 T in the air gaps. Use the B-

Forces and nature,

Falling objects, Hello, I''d like to ask, why do objects, that fall from hi...

Hello, I''d like to ask, why do objects, that fall from higher heights hit stronger that those, falling from smaller heights, if force equals mass times acceleration, and yet accel

Sound waves, what is sound waves

what is sound waves