Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Radioactive isotopes are often introduced into the body through the bloodstream. Their spread through the body can then be monitored by detecting the appearance of radiation in different organs.^ (131) I, beta a emitter with a half-life of 8.00d , is one such tracer. Suppose a scientist introduces a sample with an activity of 325 Bq and watches it spread to the organs.
1) Assuming that the sample all went to the thyroid gland, what will be the decay rate in that gland 24.0 d (about 3 1/2weeks) later?
2) If the decay rate in the thyroid 24.0 d later is actually measured to be 17.0Bq , what percent of the tracer went to that gland?
3) What isotope remains after the I-131 decays?
A 17.00{\rm kg} lead sphere is hanging from a hook by a thin wire 3.30{\rm m} long, What must be the minimum initial speed of the dart so that the combination makes a complete circular loop after the collision
A charge +q is located at the origin, while an identical charge is located on the x axis at x = +0.53 m. A third charge of +2q is located on the x axis at such a place that the net electrostatic force on the charge at the origin doubles, its direc..
The rope wrapped around the outer diameter of the disk is pulled at a constant speed of 1.06 m/s. find how fast does the hanging mass rise
A steel rod has a length of exactly 0.2cm at 30degree centigrade. what will be its length at 60degree centigarde?
A fullback with a mass of 105 kg and a velocity of 2.5 m/s due west collides head-on with a defensive back with a mass of 70 kgand a velocity of 4.0 m/s due east. What is the initial momentum of each player
A wheel is spinning clockwise at a 10 revolutions per second at t = 0. Due to friction in the bearings supporting the axle, the wheel slows down, losing 0.500 revolutions per second in angular velocity each second, until it comes to rest.
You and a friend each drive 67 km. You travel at 88.1 km/h, your friend at 952.6 km/h. How long would your friend wait for you at the end of the trip.
A 362 g object is attached to a spring and executes simple harmonic motion with the period of 0.200 s. If the total energy of the system is 6.71 J.
A mass of 1.61kg stretches a vertical spring 0.31m. If the spring is stretched an additional 0.132m and released, how long does it take to reach (new) equilibrium position again.
A small but measurable current of 8.4 x 10-10 A exists in a copper wire whose diameter is 2.9 mm. calculate the current density and electron drift speed
A 1460-kg racecar is driving around a circular track of radius 161 m. What is the magnitude of the net force acting on the vehicle
At one instant, force = 5.40 N acts on a 0.399 kg object that has position vector = (1.81 -1.81) m and velocity vector = (-5.91 + 5.91) m/s. determine the object's angular momentum
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd