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!
A freshly prepared sample of a certain radioactive isotope has an activity of 11.2 mCi. After 4.40 h, its activity is 8.00 mCi.
(a) Find the decay constant.
s-1
(b) Find the half-life.
h
(c) How many atoms of the isotope were contained in the freshly prepared sample?
(d) What is the sample's activity 30.2 h after it is prepared?
mCi
In being launched from rest it moves through a distance of 87.00 m and has a kinetic energy of 4.5*10^7 J at lift-off. What is the work done on the jet by catapult.
A 4.5 box slides down a 4.7 high frictionless hill, starting from rest, across a 1.6- -wide horizontal surface, afterwards hits a horizontal spring with spring constant 550 . The other end of the spring is anchored against a wall. The ground under..
Water can hold 36 grams (g) of salt in every 100 milliliters (mL). The ocean contains 3.6 g of salt in every 100 mL. As a solution, which is seawater.
A ship travels 155 km from the port on a course of 35 degrees south of west to an island, then it travels 142 km east of south to a second island, Find the displacement from the starting point to the ending point
A 10 g bullet traveling at 430m/s strikes a 13kg , 1.1-m-wide door at the edge opposite the hinge, What is the angular velocity of the door just after impac
A 65 kg hiker has fallen down a hole. One rescuer attaches a rope to the injured hiker and then a second rescuer pulls the injured hiker straight up out of the hole at a steady rate. How much force would the second rescuer need to exert on the rope t..
After the first spring compresses a distance of 32.1 cm, the second spring acts with the first to increase the force as additional compression occurs. The car comes to rest 47.0 cm after first contacting the two-spring system. Find the car's initi..
What is the kinetic energy of a 1500 kg car traveling at a speed of 35 m/s (76 mph), Does your answer to part b depend on the car's mass
Two circuits contain an emf produced by a moving metal rod, like that shown. The speed of the rod is the same in each circuit, other than the bulb in circuit 1 has one-half the resistance of the bulb in circuit 2.
A 90 uF capacitor and a 15m H inductor are in series with a 185 O resistor, What is the resonant frequency
A rock is thrown vertically upward with a speed of 11.0m/s from the roof of a building that is 70.0m above the ground, What is the speed of the rock just before it strikes the ground
A 260 wooden raft floats on a lake. When an 80 man stands on the raft, it sinks 5.0 deeper into the water. When he steps off, the raft vibrates for a while. What is the frequency of vibration.
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