Compute the minimum detectable true activity

Assignment Help Physics

Reference no: EM138062

Q1. A wheel 66.0 cm in diameter accelerates uniformly from 211 rpm to 395 rpm in 7.5 s. How far will a point on the edge of the wheel have travelled in this time?

Q2. The average intensity of sunlight at the top of the earth's atmosphere is 1390 W/m2. What is the most energy that a 30 m multiplied by 55 m solar panel might collect in one hour in this sunlight?

Q3. At a certain facility, gross and background counts are made for the same length of time, and a(alpha)=0.050 and B(beta)=0.025. The background is not accurately known beforehand. Calibration at facility shows that one net count corresponds to a sample activity of 260 Bq. The minimum significant measured activity is 159 Bq. compute the minimum detectable true activity.

Reference no: EM138062

Questions Cloud

What minimum coefficient of kinetic friction : Find out the object position p for the image to be erect and 7 times the size of the object. Focal length is 46 cm.

How many maxima would you detect : A cardiac pacemaker can be affected by the static magnetic field as small as 1.7 mT. How close can a pacemaker wearer come to a long, straight wire carrying 19 A.

Analysis of variance for heart rate : There were 25 subjects included in each of the combinations of gender and smoking status. One of the variables measured was the heart rate after six minutes of exercise. A two-way ANOVA is performed with the resulting ANOVA table given below

Analyse the time it would take a nasa satellite to travel : NASA sends a satellite to another planet by placing the satellite in a Keplerian orbit (around the sun) such that the perihelion is at the radius of the Earth's orbit (1 AU) and the aphelion is at the radius of the planet's orbit. Most of the trip is..

Compute the minimum detectable true activity : The average intensity of sunlight at the top of the earth's atmosphere is 1390 W/m2. What is the most energy that a 30 m multiplied by 55 m solar panel might collect in one hour in this sunlight.

Magnetic field is perpendicular to the plane of the loop : The power needed to operate your body is about 100 {rm watts}. Suppose your body could run on fusion power and could convert a total of 0.7 of its mass into energy. How much energy would be available through fusion? Assume the mass is 70kg.

Evaluate p-value for the f test for main effect of smoking : A study of cardiovascular risk factors compared heavy smokers, light smokers, and nonsmokers. Both men and women were included in the study and gender differences were also to be investigated. One of the variables measured was the heart rate after..

What is the radius of its circular path : The speed of light in a transparent medium (such as glass) is less than the speed of light in a vacuum. Is this a violation of the theory of relativity.

What is the new capacitance value : At a temperature of 5800, hydrogen atoms in the solar atmosphere have typical random speeds of about 12. Assume that spectral-line broadening is simply the result of atoms moving toward us or away from us at this random speed, estimates thermal width..

User Account

All Pages