The neutral hydrogen atom consists of
a. one proton and one neutron.
b. one proton.
c. one proton, one neutron, and one electron.
d. one proton and one electron.
e. an isotope and an ion.
d
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The correspondence principle applies to
A) theories of submicroscopic phenomena. B) theories of macroscopic phenomena. C) all good theories.
The eyepiece of a compound microscope has a focal length of 2.50 cm, and the objective has a focal length of 1.60 cm. The two lenses are separated by 14.0 cm. The microscope is used by a person with normal eyes, having a near point at 25 cm
What is the magnitude of the magnification of the microscope? A) 72 B) 88 C) 180 D) 219 E) 115
A spacecraft (mass = m) orbits a planet (mass = M) in a circular orbit (radius = R). What is the minimum energy required to send this spacecraft to a distant point in space where the gravitational force on the spacecraft by the planet is negligible?
a. GmM/(4R) b. GmM/R c. GmM/(2R) d. GmM/(3R) e. 2GmM/(5R)
Consider two transformers. Transformer A has 300 turns on its primary and 500 turns on its secondary. Transformer B has 250 turns on its primary and 1000 turns on its secondary
The same voltage is supplied at the primary of both transformers. The secondary voltage in transformer A has an amplitude V = 50 V. What is the amplitude of the secondary voltage on transformer B? A) 120 V B) 2400 V C) 1200 V D) 60 V E) 240 V