Explanation:
the international system of unit of the aside from the branch system International is a unit is is the metric system used in Sin industries and medicine
The wavelength of a wave (λ) is given by λ

where c is the wave speed and f is the frequency
Check the attached file for the answer.
The units for mass are grams (g) and kilograms (kg)
the units for volume are millilitres (ml) and litres (l)
Answer:
C) Use a battery with more voltage.
Explanation:
The equation for the magnetic field around a coil is given by,
B = μ₀NI
where,
B = Magnetic flux density
μ₀ = permeability
N = number of turns per meter
I = Current in the wire
So when using a higher voltage battery, more current passes through the battery as resistance of the wire remains the same.