Yes physics do involve cheerleading . Physics are found in every single motion and stunt
The velocity of light is v = 3 x 10⁸ m/s.
The given wavelength is λ = 0.86 nm = 0.86 x 10⁻⁹ m.
Note that
v = fλ
where f = frequency.
Therefore
f = (3 x 10⁸ m/s)/(0.86 x 10⁻⁹ m)
= 3.488 x 10¹⁴ Hz
Answer: 3.49 x 10¹⁴ Hz
Answer:
the primary coil current produces a magnetic field, which changes as the current changes. the iron core increases the strength of the magnetic field. the changing magnetic field induces a changing potential difference (voltage) in the secondary coil.
D) sepals
other options are ridiculous