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WorksheetsExponential / Radioactive decay and Logarithmic Scale
Total questions: 12
Worksheet time: 2hrs 0mins
Radioactive decay: There was originally 60 g worth of a certain drug, how much of this drug would be left after 90 years? Assume the half-life is 80 years. (Use 2 decimal places and dont forget unit if meron)
(a)
Radioactive decay: The half-life of a drug that has a mass of 24 g is 1 week, how much of the drug is left after 70 days? (Use 2 decimal places and dont forget unit if meron)
(a)
Exponential decay: A house currently costs 3000000, it depreciates approximately 8% per year. How much would the house be worth in 50 years (Use 2 decimal places and dont forget unit (use Php))
(a)
Radioactive decay: A 5 g sample of a drug decays to 0.03 g after 96 hours, What is its half-life? (Use 2 decimal places and dont forget unit if meron)
(a)
Exponential decay: Identify the rate of decay if a drug originally had a mass of 1 kg and decays to 50 g after 2 months (Use 4 decimal places and dont forget unit, if percent use 2 decimal places if meron)
(a)
Decibel sound: If a sound has 4 times its original value, by how many decibels does the loudness increase? (Use 2 decimal places and dont forget unit if meron)
(a)
Decibel sound: Calculate the decibels associated with a phone ring if the intensity is I = 3 X 10^-3.5 W/m^2. (Use 2 decimal places and dont forget unit)
(a)
pH scale: Identify the pH value of a chemical that has a hydrogen ion concentration of 7.23x10^-8 and identify what kind of solution it is. Use the format: pH level, kind of solution (Use 2 decimal places)
(a)
Richter scale: How much more intense is an earthquake of magnitude 7.4 on the Richter scale than one with a magnitude of 6.5? (Use 2 decimal places and dont forget unit if meron)
(a)
Richter scale: The energy released by an earthquake is 9x10^11 joules, what is the earthquake's magnitude? (Use 2 decimal places and dont forget unitif meron)
(a)
Richter scale: An earthquake was measured 7.6 on the Richter scale. Shortly after there was another earthquake that measured 8 times stronger on the Richter scale. What is the magnitude of the stronger earthquake? (Use 2 decimal places and dont forget unit if meron)
(a)
Decibel sound: How much more intense is a sound that has a level 24 dB higher than another? (Use 2 decimal places and dont forget unit if meron)
(a)
