Answer:
18.6012339739 A
Explanation:
= Vacuum permeability = 
L = Length of wire = 55 cm
N = Number of turns = 4000
I = Current
Magnetic field is given by

The current necessary to produce this field is 18.6012339739 A
Answer:
A scalar quantity is defined as the physical quantity that has only magnitude, for example, mass and electric charge. On the other hand, a vector quantity is defined as the physical quantity that has both magnitude as well as direction like force and weight.
Answer:
Explanation:
Given
Weight of Person 
Cave is
deep
Breaking stress 
Net Force on Person




The shortest time such that the person can be taken out of cave

where
h=distance moved
t=time
a=acceleration



The reproductive system because without that we would not exist , but the same thing could be said about any other systems but the reproductive system is the reason why were here today .