In polymer blends, the enthalpy of interaction is determined from the experimentally determined _____________parameter.
Fill in the blank(s) with the appropriate word(s).
interaction
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A batter hits a 0.140-kg baseball that was approaching him at 30 m/s and, as a result, the ball leaves the bat at 40 m/s in the reverse of its original direction. The ball remains in contact with the bat for 2.0 ms
What is the magnitude of the average force exerted by the bat on the ball?
The strength of the Coriolis effect depends on
A) a planet's distance from the Sun. B) the amount of greenhouse gases in the atmosphere. C) a planet's size and rotation rate. D) a planet's temperature. E) the tilt of a planet's axis.
The frequency of a note one octave higher in pitch than a 440-Hz note is
A) 1760 Hz. B) 880 Hz. C) 440 Hz. D) 220 Hz. E) 110 Hz.
A rocky leftover planetesimal orbiting the Sun is
A) a comet. B) a meteor. C) an asteroid. D) a meteorite. E) possibly any of the above