i thinkits an instrument called seismograph. not sure
Violet light is at the end of the visible light section of the electromagnetic spectrum. Ultraviolet rays are directly next to violet rays on the EM Spectrum.
Answer:
A controlled variable does not change during a experiment
Explanation:
it's c
Answer:

Explanation:
From the question we are told that:
Potential difference 
New Capacitor 
Generally the equation for Capacitor capacitance is mathematically given by

Generally the equation for New p.d' is mathematically given by




The hormone that the pineal gland releases is the hormone melatonin