Physics, 30.11.2019 01:31 blackjack73
The drill used by most dentists today is powered by a small air-turbine that can operate at angular speeds of 35 rpm. these drills, along with ultrasonic dental drills, are the fastest turbines in the world-far exceeding the angular speeds of jet engines. suppose a drill starts at rest and comes up to operating speed in 2.2 show many revolutions does the drill bit make as it comes up to speed? (rev)express your answer using two significant figures.
Answers: 2
Physics, 22.06.2019 02:30
If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 380j of energy to the room?
Answers: 1
Physics, 22.06.2019 04:00
Several mountains together form a mountain . a few of these combined form a mountain system. several systems combined form a mountain , which can stretch thousands of miles in length.
Answers: 2
Physics, 22.06.2019 09:40
When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great.d) about 10 times as great.
Answers: 1
Physics, 22.06.2019 10:10
Which branches of natural science include the study of an organism that lived 10 million years ago
Answers: 1
The drill used by most dentists today is powered by a small air-turbine that can operate at angular...
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