Uzupełnij zdania właściwymi sformułowaniami. Wyobraź sobie, że między linę a siodełko karuzeli łańcuchowej wmontowany jest siłom
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Answer:
Explanation:
We are given that
Potential ,V=25 kV=
Distance,r =1 cm=
1 m=100 cm
Mass of electron, m=
Charge, q=
We have to find the final velocity of the electron.
Speed of electron,
Using the formula
v=
Hence, the final velocity of the electron=
Answer:
The remaining percentage of drug concentration is about 88.7% 2 years after manufacture.
Explanation:
Recall the formula for the decay of a substance at an initial concentration at manufacture:
where k is the decay rate (in our case 0.06/year), and t is the elapsed time in years. Therefore, after 2 years since manufacture we have:
This in percent form is 88.7 %. That is, the remaining percentage of drug concentration is about 88.7% 2 years after manufacture.