Physics, 23.10.2020 20:10 stevenssimeon30
Which statement describes the interaction between the permanent magnets
and the electromagnet in an electric motor?
A. The current in the permanent magnets is reversed by the
electromagnet
B. The current in the electromagnet is reversed by the permanent
magnets
C. The poles of the permanent magnets are reversed by the electric
field of the electromagnet.
D. The metal loop in the electromagnet turns because of the
magnetic field of the permanent magnets.
Answers: 3
Physics, 22.06.2019 10:00
Which fact supports the conclusion that there will be fewer farm managers in the future? a) a farmer manager’s duties vary by the type of farm. b) farm technology is replacing some administrative jobs c) farm managers often need experience but not education. d) administrative duties include budgeting and training staff.
Answers: 2
Physics, 23.06.2019 00:00
You are standing on a boat. which of the following strategies will make the boat start moving? a. pushing the mast b. throwing some cargo out of the boat c. pushing the front ofthe boat d. pushing another passenger
Answers: 3
Physics, 23.06.2019 01:30
The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656(red) and 486 (blue). light from a hydrogen lamp illuminates a diffraction grating with 500 lines per mm, and the light is observed on a screen 1.50 behind the grating. what is the distance between the first-order red and blue fringes?
Answers: 3
Physics, 23.06.2019 03:40
Anumber of conditions are required for a population to be in hardy-weinberg equilibrium. which of the following are correct descriptions of the conditions that must be met? check all that apply. a. no mutations b. random mating c. small population d. migration or gene flow e. occurrence of mutations f. no natural selection
Answers: 1
Which statement describes the interaction between the permanent magnets
and the electromagnet in an...
Chemistry, 14.12.2020 01:50
Mathematics, 14.12.2020 01:50
Mathematics, 14.12.2020 01:50
Computers and Technology, 14.12.2020 01:50
Mathematics, 14.12.2020 01:50
Health, 14.12.2020 01:50
Mathematics, 14.12.2020 01:50
Mathematics, 14.12.2020 01:50
Mathematics, 14.12.2020 01:50