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a. A certain radioactive material emits gamma rays with energy 1 MeV. Another sample of radioactive material emits gamma rays with energy 10 keV. If both of these emit the same amount of energy per unit time, compare their activities.
b. A source of 198Au with a half-life of 2.69 days has an initial activity of 5 Ci. Calculate the activity after 4.0 days. Express this activity in Bq.
An object contains n1 protons and n2 electrons.what is net charge on the object?
aameter - construction and working
The Time Base Control 1 The timebase control panel gives the TIMEBASE (4), ZOOM (7) and FOCUS (5) parameters. TIMEBASE and ZOOM merged set the time scale in seconds per divisio
The big hill on a roller-coaster ride is 91 m tall. If the mass of the roller-coaster car and its two riders is 314 kg and the maximum velocity reached by this roller-coaster r
Neutron is a fundamental particle which is necessary constituent of all nuclei except that of hydrogen molecule. It was discovered by Chadwick. (1) The charge of neutron: It is
i have a siphon question
A galaxy in the constellation UrsaMajor is receding from the earth at 15,000 km/s. If one of the characteristic wavelengths of the light the galaxy emits is 550 nm, what is the cor
what is inertial
Describe coefficient of self induction, coefficient of mutual induction. What types of transformer is used in a bed lamp.
Relative velocity of a boat in a river flowing at a given velocity horizontally Ans) assume the river to be stopped and measure relative velocity of boat and find angle.
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