Evaluate the half life of the substance
When radioactive substance provides a counting rate of around 1250 cpm at time t = 0, and a counting rate of 475 cpm at time t = 20 minutes, determine the half life of the substance.
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A person of 88.0 kg stands on one leg and 90% of the weight is supported through the upper leg joining the knee and hip joint-the femur. Supposing the femur is 0.680 m long and consists of a radius of 1.90 cm, by how much is the bone compressed? I
The other end is given an initial horizontal velocity in such a way that the precession is smooth with no notation. (i) Determine the magnitude of the angular velocity of precession?
A Gieger counter computes 750 counts in 5.0 min. (i) Find out the average counting rate per minute and the standard deviation of the counting rate (ii) Determine the fractional error. (iii) How long would you wish for to count to get fractional er
The average counting rate of a radioactive sample is around 486 cpm. Determine the probability that in any given 10 second interval one gets less than 72 counts. Is this similar as the probability of getting less than 72 x 6 = 432 counts in about
The 8 high-capacity rats had mean blood pressure 89 with standard deviation 9; the 8 low-capacity rats had mean blood pressure 105 with standard deviation 13. (Blood pressure is measured in millimeters of mercury.)
(i) Determine the magnetic deflection force which acts on the proton in the chamber? The proton mass is around1.67*10^-27kg. (ii) Determine the radius of the path of proton?
Explain what a critical value is, and explain how it is used to test a hypothesis?
The Stars in a typical globular cluster orbit at speeds of around 10 km/s, and stars at the outskirts of a globular cluster are around 50 light-years from the center.
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In lecture, Dr. Speakman went on a rant about her empirically unfounded hypothesis that those who are sorted into Slytherin House at Hogwarts School
Obstructive sleep apnea hypopnea is often the etiology for what symptoms in middle aged or older adults: Select one:
Identify a stereotype you use, and consider 5 people to whom you might apply it. For example, elderly, fraternity/sorority students, cultural stereotypes,
What are your strongest and weakest traits obtained from completing the DISC survey? List and describe positive and negative qualities of your prominent DISC
Question: Which of the following is NOT one of the reasons why schemas are useful in our everyday lives?
How often has your supervisory team interacted with you specifically about instruction and instructional practice?
Sam exhibits several symptoms that are indicative of bipolar disorder. These symptoms include insomnia, elevated energy, heightened moods,