The wavelength of light visible to the human eye is on the order of 5 x 10-7 m. if the speed of light in air is 3 x 108 m/s, fin
1 answer:
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Answer:
RT = 17 ohms
Explanation:
For two parallel resistances in a circuit the combined resistance is given by:
R1 = 25 ohms
R2 = 50 ohms
You replace the values of R1 and R2 in the formula for RT:
hence, the combined resitances is 17 ohms
Answer:
a = 0.827468
Explanation:
given,
half life of radium-224 = 3.66 days
now,
t is the time
A₀ is the amount at t = 0
at t = 0 , A(0) = 1
A(3.66) = 1/2
at t = 3.66
taking log both side
3.66 log (a) = log (0.5)
log a = -0.0822
now,
a = 0.827468