What is the mass of tissue that receives 15 Joules and absorbs 5 Gy?
Q: The crew of the Apollo 9 collected moon rocks to bring back to earth. Three of the rocks were massed…
A: Given: Mass of rock-1, m1 = 9.60 g Mass of rock-2, m2 = 0.00345 kg Mass of rock-3, m3 = 195 mg
Q: Q. 8: K.E. per unit volume is given by 3 2 (a) E=P (b) E=² 3 3 (c) E=mv² (d) None of these…
A: We need to compute- K.E. per unit volume=? The data given as- K.E. of gas molecules.
Q: After the first covid-19 case found in Olde town, a group of volunteers started counting the number…
A: Required : Meaning of the number 0.2
Q: sample of iodine-126 with an original mass of 15mg loses 13.125mg of the original mass of the…
A: sample of iodine-126 with an original mass of 15mg loses 13.125mg of the original mass of the…
Q: What is the half-life, t½, (in hr) when the concentration was 100 mg/L?
A: The concentration is decreasing at rate of 10mg/L/hr .
Q: If a microwave oven emits 1,100 J of energy every second, how much energy will be emitted after 8.9…
A: Power emitted by a source is defined as the energy radiated per unit time, given as P=Et In the…
Q: The half-life of I-137 is 8.07 days. If 25 grams are left after 40.35 days, how many grams were in…
A:
Q: 52 Megawatts for a period of 3 Days 7 Hours and 32 Minutes. How many Joules is this?
A: A megawatt is a unit of power. Power times time gives us energy.
Q: If your car averages 22.07 miles per gallon, how many miles would you expect to drive on 13.243…
A: Car average of X miles per gallon means that in 1 gallon gas the car will go to X miles. So the…
Q: A radioactive isotope has a half-life of about 17 years, which means that if it starts with 1 kg…
A:
Q: If the delta variant death rate per day (Po) peaked at 2000 in late September and declined at the…
A:
Q: atomic mass unit = 1.661x10-24 grams Technetium-99 has a half-life of 6 hours. Suppose a lab has 80…
A: Half life of Technetium -99 T1/2 = 6 hours Initial amount (mo) = 80 mg Let amount left after t…
Q: A drug has a half life of 4.5 hours. The drug is administered by I/V injection, and immediately…
A:
Q: The efficiency of a nuclear power plant is 39.9.0%. If 312.66.0 kW of power are produced by the…
A:
Q: The count in a bacteria culture was 200 after 15 minutes and 1600 after 30 minutes. Assuming the…
A:
Q: the mass m, is given the equation m=i[0.69]t. i is the intitial dose and t is the number of hours…
A: Given, m=i(0.69)t (t comes in the exponent) where i= initial mass t=…
Q: A person on a diet might lose 2.6 kg per week. Express the mass loss rate, as if the dieter could…
A: A person on a diet lose 2.6 kg per week. We need to express the mass loss rate if the dieter could…
Q: a sampling of 15 million particles coming from an exhaust vent contained 60 sulfur dioxide…
A: 60 particles of Sulphur dioxide in 15 million particles can be expressed as a fraction 6015 million…
Q: The total annual energy consumption in the US in 2020 was 92.9 quadrillion BTUs. How much mass (in…
A: The given total annual energy consumption in the US in 2020 was E = 92.9 quadrillion BTU since, 1…
Q: A fire grew to 1500kW in 125 seconds, what is the growth rate
A: Fire growth = 1500 kw time =125 s
Q: How many microstates are created when 4 particles are distributed into 2 boxes?
A: Given data : Number of particles (N) = 4 Number of boxes = 2 Formula : Here, number of…
Q: What is the mass of 2.50 LL of pure water? What is the mass of 2.50 LL of whole blood? What…
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Q: The half-life of a certain chemical in the human body for a healthy adult is approximately 3h. What…
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Q: The half life of 85Kr is 11 years. What is the mass of one millicurie of 85Kr? O 9.2 microgram O 30…
A: Given Half life = 11year T½= 11*365*24*60*60 sec =3.48*10⁸ sec I millicurie = 3.7*10⁷ /s Lambda=…
Q: an atomic bomb explodes with 4.5 x 1018 Joules released. how much nuclear fuel (in kg) is burnt in…
A: Given data The energy released during the explosion is E = 4.5 x 1018 J. According to the…
Q: A drug has a half-life of 6 hours. The drug is administered by I/V injection, and immediately after…
A: Half-life is the time required for a quantity to reduce to half of its initial value.…
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- 3. A GM counter has dead time of 250 s. It records 20,000 counts per minute. What is the actual count rate? [Ans. 21,820]If the half life of an element is 32.2 years, how many years it take for a sample to decay to the point where its activity is 78.6% of the original value?Janice is grilling a steak for her July 4th barbecue dinner. The steak initially weighs 300 grams and is 25 mm thick. After grilling it for a while, she considers the steak done, and measures it again: it now weighs 215 grams, and is 15 mm thick. For both the cooked and uncooked steak, she uses the thumb-test to determine the done-ness, i.e. she uses her thumb (area ~5cm2) to push down with a force of 5 N. The uncooked steak compresses by 7 mm, and the cooked steak by 2 mm. The change in elasticity of the steak on cooking is due partly to the loss of water volume (so that existing bonds get closer together) and partly to the creation of new bonds. Assume all of the difference in raw vs. cooked steak thickness is due to water loss that makes it thinner (25 mm thick in the uncooked steak, versus 15 mm thick in the cooked steak), and that the other dimensions of the steak (length and width) have not changed. By what percentage has the steak's volume decreased from the original value?…
- A radioactive element has a half-life of 3 days. The initial amount of that element is 1024 grams. How many grams of that element are left 12 days later? Write down your answer as an integer value (no decimals) and do not write the unit.The half-life of a certain radioactive isotope is 30 minutes. If we start out with 100 g of the isotope, howmuch is left after 2.0 hours?The efficiency of a nuclear power plant is 36.1.0 %. If 280.16.0 kW of power are produced by the nuclear fission, what is the electric power output of the plant? Please give your answer in kilowatts with one decimal place.
- Strontium-90 is one of the radioisotopes released in the Chernobyl nuclear plant accident. The half-life of strontium-90 is 28.1 years. If you begin with 67.3 milligrams of strontium-90, how many milligrams will you have left after 84.3 years have passed? mgA radioactive element decays at a continuous rate of 5.8%. What is its half-life in years?A naturally occurring isotope of hydrogen called tritium has a half-life of 12.3 years. If a sample of tritium is one-thirty-secondth of its original amount, how much time has elapsed?