Physics, 20.08.2019 05:00 ghostboy2001
Emily’s vacuum cleaner has a power rating of 200 watts. if the vacuum cleaner does 360,000 joules of work,
how long did emily spend vacuuming?
Answers: 1
Physics, 22.06.2019 21:00
What do the atoms of elements in the same group have in common? a. they have the same atomic numbers. b. they have the same average atomic masses. c. they have the same number of electron shells. d. they have the same number of electrons in their outermost shells.
Answers: 1
Physics, 23.06.2019 02:30
Substances that assume the shape of their container, but do not have a definite size are called
Answers: 2
Physics, 23.06.2019 02:30
Atrain is traveling at 30.0 m/s relative to the ground in still air. the frequency of the note emitted by the train whistle is 262 hz. the speed of sound in air should be taken as 344 m/s. what frequency (f approach) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and approaching it? what frequency (f recede) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and receding from it?
Answers: 1
Physics, 23.06.2019 05:30
Which form of pure carbon is so hard that it can be used in cutting tools?
Answers: 1
Emily’s vacuum cleaner has a power rating of 200 watts. if the vacuum cleaner does 360,000 joules of...
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