Hydrogen atoms are placed in an external magnetic field. The protons can make transitions between states in which the nuclear spin component is parallel and antiparallel to the field by absorbing or emitting energy. What magnetic-field magnitude is required for this transition to be induced by photons with frequency 23.1 MHz?
Answers: 3
Physics, 22.06.2019 13:30, kuddlebugsmommy
The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?
Answers: 1
Physics, 22.06.2019 17:40, cravens511peeelg
The first-order reaction a→2b+c has rate constant 0.538 s−1. if the initial concentration of a is 0.867 mol l−1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.
Answers: 3
Physics, 23.06.2019 00:00, cece3467
The horizontal blue line through the middle of the lens is called the optical axis. as the lamp is moved above or below the axis, keeping the horizontal distance to the center of the lens constant, how does the horizontal distance from the lens to the image change?
Answers: 2
Hydrogen atoms are placed in an external magnetic field. The protons can make transitions between st...
Mathematics, 17.07.2019 19:00
Biology, 17.07.2019 19:00
Biology, 17.07.2019 19:00
Spanish, 17.07.2019 19:00
Mathematics, 17.07.2019 19:00
Computers and Technology, 17.07.2019 19:00
History, 17.07.2019 19:00