Ionization is a process whereby an atom acquires enough energy so that one or more of its electrons __________ from the nucleus
Fill in the blank(s) with correct word
breaks free
Physics & Space Science
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In which part of the ear is the cochlea?
a. outer ear b. middle ear c. inner ear d. ear canal
Physics & Space Science
Two ropes are spliced together as shown
A short time after the incident pulse shown in the diagram reaches the splice, the rope's appearance will be that in
a.
Physics & Space Science
Sebastian has drawn a free-body diagram for a ladder of mass m leaning against a frictionless wall. His diagram is shown below. What is his error?
?
?
A.
is in the wrong direction.B.
should be directed upwards, not down.C.
should be perpendicular to the wall, not parallel to it.D.
should be down into the floor for 
to have the given direction.E.
is correct, but there should also be a force perpendicular to the wall.
Physics & Space Science
Potential of Point-Charges: Point charges +4.00 ?C and +2.00 ?C are placed at the opposite corners of a rectangle as shown in the figure. What is the potential at point B due to these charges? (k = 1/4??0 = 8.99 × 109 N ? m2/C2) 
A. 8.99 kV B. 11.2 kV C. 89.9 kV D. 899 kV E. 112 kV
Physics & Space Science