The skater is has a mass of 75 kg. Find the total Potential energy of the skater at the top of the ramp at 6 m.
1 answer:
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Answer:
Explanation:
V=IR
R=V/I
R=9/0.0175
Answer:
option (c) is correct
Explanation:
Half life of a substance is the time in which the element becomes half of is initial value.
half life, T = 8 days
Amount remaining, N = 10 % of original value
Let the original value is No.
N = 10% of No
N = 0.1 No
Let the time taken is t and the decay constant is λ.
The relation between the decay constant and the half life is given by
Us the equation of radioactivity
Taking natural log on both the sides, we get
0.08664 t = 2.303
t = 26.6 days