Answer:
After 1023.4 years the mass of the substance will be 30 g.
Explanation:
Hi there!
Let´s write the function (according to what I found on the web):
We have to find the time "t1" at which the mass of the substance is 30 g. Mathematically:
m(t1) = 30
Then:
Let´s solve the equation for t1. First, divide by 100 both sides of the equation:
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Apply ln to both sides of the equation:
Use the logarithm property: ln (aᵇ) = b ln(a)
ln(0.3) = -t/850 · ln (e) (ln (e) = 1)
ln(0.3) = -t/850
850 ln(0.3) = -t
t = -850 ln(0.3)
t = 1023.4
After 1023.4 years the mass of the substance will be 30 g.
Answer:
Thermal expansion occurs when an object expands and becomes larger due to a change in that specific object's temperature. Temperature is the average kinetic (basically movement) energy of the molecules in a substance. A higher temperature means that the molecules are moving faster on average.
Answer:
Time period becomes one third
Explanation:
Time period is the reciprocal of frequency
so if frequency is tripled period will be one third.