1. Consider a potential energy function as shown here.
What does this potential energy function imply?
(A) There is a physical wall at x=-a/2 and another one at x=+a/2.
(B) A particle can move freely between x = -a/2 and x= +a/2 without
any force acting on it.
At x = ±a/2, a force will act on a particle, pushing it into region II
A, B and C
(E) B and C

2. Consider a potential energy function as shown here.
What does this potential energy function imply?
(A) There is a physical wall at x=-a/2 and another one at x=+a/2.
(B) A particle can move freely between x = -a/2 and x= +a/2 without
any force acting on it.
At x = ±a/2, a force will act on a particle, pushing it into region II
A, B and C
(E) B and C

3. Consider a standing wave on a clamped string. What function
describes the simplest characteristic oscillation of the string?
(A) y(x)= cos(px/a)
(B) y(x)= const.
(C) y(x)= sin(px/a)
(D) y(x)= a·x2
y(x)
-a/2
+a/2

4. Consider a standing wave on a clamped string. What function
describes the simplest characteristic oscillation of the string?
(A) y(x)= cos(px/a)
(B) y(x)= const.
(C) y(x)= sin(px/a)
(D) y(x)= a·x2