What is the tracer''s half-life

Reference no: EM13304988

A 115 mCi radioactive tracer is made in a reactor. When delivered to a hospital 16 hours later its activity is 95 mCi. The lowest usable activity level is 10 mCi.

a) What is the tracer's half-life? (in hours)

b) For how long after delivery is the sample usable? (in hours)

Reference no: EM13304988

Questions Cloud

Find the powers of the correcting contact lenses : A person can focus clearly only on objects between 37.5cmand 51.0cm from his eyes. Find the powers of the correcting contact lenses needed to correct his closeup vision and distant vision

Compute the bond expected rate of return : You own a 20-year, $1,000 par value bond paying 7 percent interest annually. The market price of the bond is $875, and your required rate of return is 10 percent.

Find is she nearsighted or farsighted : A person can see clearly up close, but cannot focus on objects beyond 82.0cm . She opts for contact lenses to correct her vision. Is she nearsighted or farsighted

Compute the age of a piece of solidified lava : The technique known as potassium-argon dating is used to date old lava flows and thus any fossilized skeletons found in them, What is the age of a piece of solidified lava

What is the tracer''s half-life : A 115 mCi radioactive tracer is made in a reactor. When delivered to a hospital 16 hours later its activity is 95 mCi. What is the tracer's half-life

Determine the peak current that flows in this circuit : An LRC series circuit with R= 150 ohms, L= 25 mH and C= 2 mF is powered by an AC voltage source of peak voltage Vo= 340 V, Determine the peak current that flows in this circuit

Determine how deep is the pool : A 5.0-m-wide swimming pool is filled to the top. The bottom of the pool becomes completely shaded in the afternoon, How deep is the pool

What is the average kinetic energy of the gas molecules : A certain ideal gas is kept at 350K in a container with a volume of 3 cubic meters. what is the average kinetic energy of the gas molecules

What is the potential energy of the nucleus : A Beryllium nucleus consists of 4 protons and 5 neutrons. What is the potential energy of the nucleus due to electrical forces

User Account

All Pages