Q.3:(a) Briefly describe the radioactivity phenomena with examples. (b) The counting rate of a radioactive source...

Q.3:(a) Briefly describe the radioactivity phenomena with examples.

(b) The counting rate of a radioactive source in the beginning (t=0) is 4000 counts/s. After 10 seconds the counting rate drops to 1000/s.

(i) What is the half-life of the radioactive source?

(ii) What will be counting rate after 20 s?

Expert Solution

genius_generous answered 2 years ago

3. The counting rate of a radioactive sample (including background) is 1200 counts in one minute....

3. The counting rate of a radioactive sample (including background) is 1200 counts in one minute. The background counting rate is 400 counts in one minute. What is the percent standard deviation of the net count rate? Please solve in details step by step!!

Suppose a radioactive nucleus has a half-life of 2 min. and suppose the counting rate at...

Suppose a radioactive nucleus has a half-life of 2 min. and suppose the counting rate at time t = 0 is 3000 counts/10 sec. a. What is the counting rate after 2 min? b. After 6 min? c. After 10 min? d. After 20 min?

11) Briefly describe the photoluminescence (PL) and electroluminescence (EL) phenomena

Identify and briefly describe the physical phenomena leading to the destabilization or instability of emulsions-- a...

Identify and briefly describe the physical phenomena leading to the destabilization or instability of emulsions-- a dispersed two-phase system.

Explain, briefly one of the phenomena below and describe how it relates to quantization of energy....

Explain, briefly one of the phenomena below and describe how it relates to quantization of energy. (a) the photoelectric effect OR (b) line (emission) spectra

A radioactive material disintegrates at a rate proportional to the amount currently present. If Q(t) is...

A radioactive material disintegrates at a rate proportional to the amount currently present. If Q(t) is the amount present at time t, then dQ/dt=−rQ where r>0 is the decay rate. If 300 mg of a mystery substance decays to 80.84 mg in 3 weeks, find the time required for the substance to decay to one-half its original amount. Round the answer to 3 decimal places.

Briefly describe the main similarities and differences between the threshold phenomena for the stochastic general epidemic...

Briefly describe the main similarities and differences between the threshold phenomena for the stochastic general epidemic model and the deterministic general epidemic model. (Topic: Epidemics) Pls explain in a simple way to understand. Thxs

7) Describe briefly the electrical conduction phenomena caused by the Coulomb blockade in nanoparticles. In short...

7) Describe briefly the electrical conduction phenomena caused by the Coulomb blockade in nanoparticles. In short sentence

Suppose a radioactive nucleus has a half-life of 2 min. and suppose the counting rate at t = 0 is 3000 counts/s.

Suppose a radioactive nucleus has a half-life of 2 min. and suppose the counting rate at t = 0 is 3000 counts/s. a. What is the counting rate after 2 min? b. After 6 min? c. After 10 min? d. After 20 min? e. What is the mean life of this nucleus? f. Suppose that the Geiger counter detects 10% of all the radioactive decays. What is the total number of radioactive nuclei at time t=0? g. What is the total number at t 2 min? h. How many...

A. Briefly explain the biological effects of ionizing radiations produced from radioactive elements B. Discuss at...

A. Briefly explain the biological effects of ionizing radiations produced from radioactive elements B. Discuss at least three (3) radiation hazards you can be exposed to and how you can mitigate these effects on your health in the radiology environment. C. Distinguish between a real and a virtual image D. Explain two (2) ways by which the human body uses electricity. E. Tabularize the two main types of refractive abnormalities of the human eye, their causes, as well as the appropriate...

Question