Physics, 06.07.2019 06:30 eylinglez3ovm16v
Francium-223 has a half-life of 22 minutes. a geiger counter gives a reading of 58 counts per minute (cpm) from a sample of francium-223. what will the reading be 22 minutes later? you can ignore background radiation.
Answers: 1
Physics, 22.06.2019 09:30
Gasoline comes from petroleum, which is made from ancient living things. petroleum, therefore, contains a type of energy. a. heat b. nuclear c. biological d. chemical potential
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Physics, 22.06.2019 09:50
Which statement correctly describes the current in a circuit that is made up of any two resistors connected in parallel with a battery? a. the current in the battery and in each resistor is the same b. the current the battery equals to the sum of the currents in the resistors c.the current in the battery is less than the current in either resistor d. the current in the battery equals to the product of the currents in the resistors
Answers: 1
Physics, 22.06.2019 11:00
If a simple machine reduces the strength of a force, what must be increased?
Answers: 3
Francium-223 has a half-life of 22 minutes. a geiger counter gives a reading of 58 counts per minute...
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