Which of the following is an example of a physical change?
A) water boiling and being converted into steam
B) water being electrolyzed and being converted in hydrogen and oxygen
C) iron metal reacting with oxygen to form rust
D) a candy bar being digested by a student
E) charcoal being converted into ash
Answer: A
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_________ stresses are stresses in a material that are not caused by an external applied force.
Fill in the blank(s) with the appropriate word(s).
A basketball player lands on the ground after dunking the ball. Is the work done on the player by the contact interaction between the player and ground positive, negative, or zero?
A. Positive B. Negative C. Zero D. One needs more information to answer.
The cones in the retina of the eye are
A) most densely packed at the center of vision. B) uniformly spread along the visual field. C) concentrated along the periphery of vision.
An AC series circuit contains a resistor of 30.0 ?, a capacitor of 1.22 ?F and an inductor of 154 mH. What frequency should be used to create a resonance condition in the circuit?
a. 3.49E+2 Hz b. 8.48E+2 Hz c. 9.21E+2 Hz d. 3.67E+2 Hz e. 7.35E+2 Hz