Mass on a Spring: A 0.50-kg object is attached to an ideal spring of spring constant (force constant) 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. At what distance from the equilibrium position are the kinetic energy and potential energy of the system the same?
A. 0.017 m
B. 0.029 m
C. 0.12 m
D. 0.17 m
Answer: D
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If R = 4.0 k?, C = 3.0 mF, ? = 15 V, Q = 12 mC, and I = 2.0 mA, what is the potential difference Vb ? Va?
a.
+3.0 V
b.
?19 V
c.
?3.0 V
d.
+27 V
e.
+21 V
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Fill in the blank(s) with correct word
A box is moved 20 m across a smooth floor by a force making a downward angle with the floor, so that there is effectively a 10 N force acting parallel to the floor in the direction of motion and a 5 N force acting perpendicular to the floor. The work done is
A. 300 J. B. 100 J. C. 200 J. D. 5.0 J. E. 20 J.
An object is placed to the left of a converging lens. Determine if the following statement is true or false. The image can be upright or inverted
1.True 2.False