Answer:
In helium
Explanation:
Since the units are the same, the value should only be considered.
Answer:
Series circuit
Explanation:
Because the electrical components are connected one after each other in a single loop, rather than alongside each other, forming extra loops.
C and E shows 1 wavelength
Answer:
42.6 N/m
Explanation:
The spring constant can be found by using Hooke's law:
F = kx
where
F is the force applied
k is the spring constant
x is the stretching/compression of the spring
In this problem, the mass applied is
m = 0.10 kg
so the force applied is the weight of the mass:

The stretching of the spring is
x = 2.3 cm = 0.023 m
So the spring constant is
