Atoms that have the same number of protons but a different number of neutrons are called
a. ions.
b. molecules
c. atomic pairs.
d. nuclear pairs.
e. isotopes.
e
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A proton moving along the x axis has an initial velocity of 4.0 × 106 m/s and a constant acceleration of 6.0 × 1012 m/s2. What is the velocity of the proton after it has traveled a distance of 80 cm?
A. 5.1 × 106 m/s B. 6.3 × 106 m/s C. 4.8 × 106 m/s D. 3.9 × 106 m/s E. 2.9 × 106 m/s
As Curtiss thought, our Milky Way is now known to be quite similar to the nearby Andromeda Galaxy, M-31
Indicate whether the statement is true or false
The force that acts between a pair of magnetic poles depends on
A) magnetic pole strength. B) separation distance. C) both of these D) neither of these
What is the angular separation of two spectral lines of wavelengths 497 nm and 251 nm formed in the third order with a diffracting grating having 587 lines per millimeter?
A) 34.8° B) 24.8° C) 41.3° D) 29.4° E) 4.21°