<h2>
Time needed is 2545.45 seconds.</h2>
Explanation:
We know equation for power

Here we need to find time when for a 22 kW steam engine to do 5.6 × 10⁷ J of work.
So
Work = 5.6 × 10⁷ J
Power = 22 kW = 22 x 10³ W
Substituting

Time needed is 2545.45 seconds.
<span>When an atomic nucleus emits a beta particle, "Atomic number remains same"
Hope this helps!</span>
Explanation:
if two individual forces are of equal magnitude and opposite direction, then the force is said to be balanced. when there is an individual force that is not being balanced by a force of equal magnitude and in the opposite direction.
The process that causes liquid rock to move is called convection
Answer:
A. When the current is shut off, the magnetic field disappears.
Explanation:
Electromagnetism is a method in which magnetism is obtained from an electric current. It is an artificial way of producing a strong magnetic fields due to the flow of current.
Since the magnetic effect observed is due to the flow of an electric current, so when the current is shut off, the magnetic field disappears.
It has a wide range of applications in manufacturing industries, electric bells, induction coil etc.