A batter hits a foul ball. The 0.140-kg baseball that was approaching him at 40.0 m/s leaves the bat at 30.0 m/s in a direction perpendicular to the line between the batter and the pitcher
What is the magnitude of the impulse delivered to the baseball? A) 9.80 Ns
B) 1.40 Ns
C) 3.50 Ns
D) 5.60 Ns
E) 7.00 Ns
E
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a. distance and diameter. b. temperature and distance. c. distance. d. temperature and diameter. e. apparent magnitude.
To a fair approximation, Early Greeks knew the
A) size of Earth. B) size of the Moon. C) Earth-Moon distance. D) all of the above
Why do you suppose water has been such a popular heat transfer material (steam heat, hot water systems, etc)?
What will be an ideal response?
A car headlight and an interior dome light use the same voltage, but the headlight consumes much more power because
a. its resistance is lower. b. the current in it is larger. c. it uses energy faster. d. all of the above