What is the half-life and decay constant
The counting rate from a radioactive source is 8000 counts/s at time t=0, while 10 mins later the rate is 1000 counts/s.
(a) What is the half-life?
(b) What is the decay constant?
(c) What is the counting rate after 30 minutes?
Expected delivery within 24 Hours
Determine the following The force acting on a 1 m2 surface corresponding to a 1 kPa pressure applied over the entire surface.
Coming out of a factory chimney are the following gases, CO2, SO2, O2, N2, H2O with volume percentage to be 13.5%, 0.3%, 5.2%, 76%, and 5% respectively. Calculate density of the gas mixture.
A 10.0 kΩ resistor and a capacitor are connected in series and then a 10.0 V potential difference is suddenly applied across them. The potential difference across the capacitor rises to 5.00 V in 1.40 µs.
If the force of the spring on the cylinder is F => (100s^1/3) lb, where s is given in feet, determine the speed of the cylinder just after it moves away from the spring, i.e., at s = 0.
The counting rate from a radioactive source is 8000 counts/s at time t=0, while 10 mins later the rate is 1000 counts/s. (a) What is the half-life? (b) What is the decay constant?
The flow areas are different for each cross-section. Find the Temperatures at (2) and (4), external heat transfer rate, 2Q3 (kJ/s) and nozzle exit diameter, D5 (m).
The energy loss in the system is 2.5 times the velocity head in the 2-inch pipe. Calculate the horsepower delivered by the pump to the oil.
A solid uniform spherical marble with mass 1kg and r= .02m rolls down a hill starting from rest. The hill is 1m high and has a hypotenuse of 2m. a. gravitational potential energy of the marble at the top of the hill?
1956575
Questions Asked
3,689
Active Tutors
1415838
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
PP is a 28-year-old female with a history of bipolar disorder, depression, and anxiety. She reports her symptoms include episodes of creativity followed by cras
Question: Which of the following is the drug of choice to treat scabies and may also be used for the treatment of lice?
Which of the following statements is appropriate? Need Assignment Help? Select all that apply. Group of answer choices
Problem: In existential therapy, the conception of the therapist is Group of answer choices an observer-technician.
Corinne is an educator who has just completed an online professional development course on cultural safety and Aboriginal and Torres Strait Islander cultures.
Question: Emotional regulation refers to Option A an infant's attempt to understand the range of emotions they feel
Question: Which of the following can occur under hypnosis? Need Assignment Help? Multiple Choice People