A certain radioactive material has an atomic mass

Reference no: EM13542449

A certain radioactive material has an atomic mass of 172 and a half-life of 505 years (take 1 yr = 365.25 d). What is the activity of 0.9 g of this material?

Reference no: EM13542449

Questions Cloud

What is the magnitude of the average induced emf : A circular loop in the plane of the paper lies in a 0.63 T magnetic field pointing into the paper. What is the magnitude of the average induced emf? If the coils resistance is 2.3 ohms, what is the average induced current?

Is this current flowing clockwise or counter-clockwise : The sketch at the left shows a square loop of wire. Its resistance is 5 O. Its dimensions are shown: a = 4.0 em, b = 5.0 em. The nearby wire carries a current of 10.0 A. This current is increasing at the rate 120 A/s. What is the current in the lo..

Draw a free body diagram for each block in the system : Draw a free body diagram for each block in the system. Find the acceleration of the system and the tensions in the ropes. Coefficient of kinetic friction of 0.3 exists between the two blocks with no other frictional surfaces.

Compute decrease in energy when the capacitors are connected : A 25.0 uf capacitor is charged to a potential difference of 850v . The terminals of the charged capacitor are then connected to those of an uncharged 11.0 uf capacitor. Compute the original charge of the system. Compute the final potential difference..

A certain radioactive material has an atomic mass : A certain radioactive material has an atomic mass of 172 and a half-life of 505 years (take 1 yr = 365.25 d). What is the activity of 0.9 g of this material?

How far was the spring stretched from its unstreched length : A mass m = 12.0 kg rests on a frictionless table and accelerated by a spring with spring constant k = 4827.0 N/m. The floor is frictionless except for a rough patch. For this rough path, the coefficient of friction is ?k = 0.41. The mass leaves th..

Relative to tabletop during process-magician pull tablecloth : A magician pulls a tablecloth from under a 200 g mug located 30.0 cm from the edge of the cloth. The cloth exerts a friction force of 0.100 N on the mug, and the cloth is pulled with a constant acceleration of 3.50 m/s2.

Certain point the speed of the bucket begins to change : A 6-{\rm kg} bucket of water is being pulled straight up by a string at a constant speed. At a certain point the speed of the bucket begins to change. The bucket now has an upward constant acceleration of magnitude 3 \rm{m/s^2}. What is the tension i..

What is the magnitude of the magnetic field inside solenoid : A long solenoid consists of 1600 turns and has a length of 0.55 m.The current in the wire is 0.41 A. What is the magnitude of the magnetic field inside the solenoid?

User Account

All Pages