Answers: 3
Physics, 22.06.2019 15:20
Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?
Answers: 2
Physics, 23.06.2019 16:00
The table shows columns that brenda uses for her notes on the properties of elements. her notes state that some elements can react to form basic compounds. where should brenda place this property in her table?
Answers: 1
Physics, 23.06.2019 19:00
The mass number of fe^2+ is 56. how many neutrons are there in a single fe^2+ atom?
Answers: 1
Physics, 24.06.2019 02:00
Consider two closed systems a and b. system a contains 3000 kj of thermal energy at 20°c, whereas system b contains 200 kj of thermal energy at 50°c. now the systems are brought into contact with each other. determine the direction of any heat transfer between the two systems.
Answers: 2
An electric toaster, which is 30% efficient, is supplied with 8,000J of energy. How many joules of e...
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