The radius of the n = 3 Bohr orbit in the hydrogen atom is
A)
0.36 nm.
B)
0.60 nm.
C)
0.48 nm.
D)
0.12 nm.
E)
0.24 nm.
C
Physics & Space Science
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If Q = 20 ?C and L = 60 cm, what is the magnitude of the electrostatic force on any one of the charges shown?
a.
25 N
b.
19 N
c.
15 N
d.
9.1 N
e.
14 N
Physics & Space Science
Define an inelastic collision in terms of conservation of momentum and energy
What will be an ideal response?
Physics & Space Science
Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.You drop the box. As it falls to its original level, its kinetic energy is
a. 0 b. 4 J. c. 100 J. d. none of the above.
Physics & Space Science
The mass of an object is fixed, but its weight varies from location to location
Indicate whether the statement is true or false
Physics & Space Science