Physics, 06.11.2019 02:31 emmalybrown
Aroom has dimensions 3.00 m (height) 3.70 m 4.30 m. a fly starting at one corner flies around, ending up at the diagonally opposite corner. (a) what is the magnitude of its displacement? (b) could the length of its path be less than this magnitude? (c) greater? (d) equal? (e) choose a suitable coordinate system and express the components of the displacement vector in that system in unit-vector notation. (f) if the fly walks, what is the length of the shortest path? (hint: this can be answered without calculus. the room is like a box. unfold its walls to flatten them into a plane.)
Answers: 3
Physics, 22.06.2019 17:20, Queenhagar
In a system with only a single force acting upon a body, what is the relationship between the change in kinetic energy and the work done by the force? answers: work is equal to the change in kinetic energy. work depends on the square of the change in potential energy. work is equal to the negative of the change in kinetic energy. work is equal to the square of the change in kinetic energy
Answers: 2
Physics, 22.06.2019 18:00, RyannLambertt7141
Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.
Answers: 1
Physics, 23.06.2019 01:00, kcarstensen59070
What explosion in the upper solar atmosphere releases about as much energy as millions of 100-megaton hydrogen bombs exploding simultaneously?
Answers: 2
Aroom has dimensions 3.00 m (height) 3.70 m 4.30 m. a fly starting at one corner flies around, endin...
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