Answer:
B_o = 1.013μT
Explanation:
To find B_o you take into account the formula for the emf:

where you used that A (area of the loop) is constant, an also the angle between the direction of B and the normal to A.
By applying the derivative you obtain:

when the emf is maximum the angle between B and the normal to A is zero, that is, cosθ = 1 or -1. Furthermore the cos function is 1 or -1. Hence:

hence, B_o = 1.013μT
A.
since they do not have a definite volume, this causes it to spread out in the air
A) <span>Ivan does work when he lifts the basket
B) Work = Force * displacement
W = 20 * 2
W = 40 Joules
So, The Amount of work he does is 40 Joules
Hope this helps!</span>
Answer:
Electric field, 
Explanation:
It is given that,
Magnitude of charge, 
Force experienced, 
We need to find the electric field at the origin. It is given by :




So, the electric field at the origin is
. Hence, this is the required solution.
Answer:
the heat gained by the system (gas) is 60 J.
Explanation:
Given;
work done by the gas sample, W = 150 J
change in internal energy, ΔU = -90 J
Apply the first law of thermodynamic;
ΔU = Q - W
where;
Q is the heat gained by the system
From the equation above;
Q = ΔU + W
Q = -90 + 150
Q = 60 J
Therefore, the heat gained by the system (gas) is 60 J.