The "plum pudding model" of the atom is associated with
a. Bohr.
b. Rutherford.
c. Dalton.
d. Thomson.
d
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The direction of vibration for an electron and the plane of polarization of the light it emits
A) are the same. B) are at right angles to each other. C) may or may not be at right angles to each other. D) are independent of each other.
The circumference of a bicycle wheel is 2 meters. If it rotates at 1 revolution per second then its linear speed is
A) 1 m/s. B) 2 m/s. C) 3 m/s. D) 3.14 m/s. E) 6.28 m/s.
John throws a baseball from the outfield from shoulder height, at an initial velocity of 39.2 m/s at an initial angle of 30.0° with respect to the horizontal. The ball is in its trajectory for a total interval of 4.00 s before the third baseman catches it at an equal shoulder-height level. (Assume air resistance is negligible.) What is the ball's horizontal displacement?
a. 76.4 m c. 136 m b. 38.2 m d. zero
A unique property of water is that it ____
a. has a high heat capacity b. can easily expand c. has a high oxygen capacity d. easily absorbs carbon monoxide e. can mix with organic lipids