A child with mass of 25 kg gets into a toy car with mass of 80 kg on a playground, causing it to sink on its springs (with effec
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Answer : The time passed in years is 20.7 years.
Explanation :
Half-life = 28.1 years
First we have to calculate the rate constant, we use the formula :
Now we have to calculate the time passed.
Expression for rate law for first order kinetics is given by:
where,
k = rate constant =
t = time passed by the sample = ?
a = initial amount of the reactant = 1.00 g
a - x = amount left after decay process = 0.600 g
Now put all the given values in above equation, we get
Therefore, the time passed in years is 20.7 years.
Answer:
(a) 95 volt
(b) 134.33 volt
(c) 10.746 volt
(d) Average delivered power is 722 watt
Explanation:
We have given value of resistance R = 12.5 ohm
Current in the ammeter i = 7.60 A
(a) Rms voltage in the resistor
(b) We know that rms voltage is given by
So peak voltage will be equal to 134.33 volt
(c) Maximum current is equal to
(d) Average power delivered in the resistor is equal to
P = VI
So