Physics, 11.12.2019 23:31, eman123adama
You place a 1 g cube of 223ra into an insulated cup containing 0.100 kg of 18 °c water. 223ra is an alpha emitter with a half-life of 11.43 days. the mass of a 223ra is 223.018499u. the mass of 219rn is 219.009477. the mass of an alpha particle is 4.002602.(a) how much energy must the water absorb to just begin to boil? the specific heat of water is 4190 j/kg k. you can assume you are at sea level so the boiling point of water is 100 °c.(b) how much energy is released in a single 223ra alpha decay? (c) if no energy is lost to the environment, how many decays must occur before the water just starts boiling? (d) if no energy is lost to the environment, how much time elapses before the water just starts boiling?
Answers: 1
Physics, 21.06.2019 22:30, lafuiciosa10
How have the competing explanations' experiments on atoms affected the development of the atomic model?
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Physics, 22.06.2019 15:10, maudiejane
An important dimensionless parameter concerned with very high-speed flow is the mach number, defined as v/c, where v is the speed of the object such as an airplane or projectile, and c is the speed of sound in the fluid surrounding the object. for a projectile traveling at 1170 mph through air at 50 ˚f and standard atmospheric pressure, what is the value of the mach number?
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You place a 1 g cube of 223ra into an insulated cup containing 0.100 kg of 18 °c water. 223ra is an...
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