The characteristic peaks in an x ray spectrum of an atom occur because of rapid deceleration of the bombarding electrons
Indicate whether the statement is true or false
F
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An atom that has more electrons than protons is a ______________ ion
a. neutral b. positive c. negative d. polyatomic
An airplane that flies at 100 km/h in a 100-km/h crosswind has a ground speed of
A) 0 km/h. B) 100 km/h. C) 141 km/h. D) 200 km/h.
Two point charges of values +3.4 mC and +6.6 mC, respectively, are separated by 0.20 m. What is the potential energy of this 2-charge system? (ke = 8.99 × 10^9 N×m2/C2)
a. +1.0 J c. -0.75 J b. -5.0 J d. +0.50 J
Neptune's largest moon, Triton, orbits in a direction opposite to the direction in which Neptune rotates. Which of the following is most likely implied by this fact?
A) Triton experiences very strong tidal forces. B) Triton probably formed as the result of a giant impact. C) Triton probably was captured into orbit by Neptune. D) Triton probably formed in its current orbit around Neptune. E) Triton probably has a rocky, asteroid-like composition.