What would you get if you split a bar magnet in the middle?
OA
two magnets, one with a n...
Physics, 12.02.2020 21:30 lisbet123085
What would you get if you split a bar magnet in the middle?
OA
two magnets, one with a north pole and one with a south pole
two magnets, each with its own north and south poles
ООО
two magnets, each with a north pole and no south pole
two magnets, each with a south pole and no north pole
Answers: 1
Physics, 21.06.2019 15:00
What is the frequency of a light wave with a wavelength of 620nm
Answers: 2
Physics, 21.06.2019 22:30
Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.
Answers: 1
Physics, 23.06.2019 00:20
You are the coordinator for a program that is going to take place at night in a rectangular amphitheater in the mountains. you will have no access to any electricity, but you must be able to illuminate the entire grounds. you know the intensity of the light from a lantern varies inversely as the square of the distance from the lantern. suppose the intensity is 90 when the distance is 5 m. a. write an equation to model the situation. b. solve for the constant of variation. c. write the equation to model the situation using the constant () of variation. d. you have been given lanterns with 40 light intensity. use your equation to solve for the distance from the lantern. e. you need to illuminate 225 km. how many meters do you need to light? f. how many lanterns will you need?
Answers: 3
Physics, 23.06.2019 00:30
Asmall electric heater, immersed in 80g of water in a calorimeter of 40j/k raises the temperature from 10.5 degree celsius to 25 degree celsius in 12 minutes. using the same apparatus with 50g of oil instead of water, it is found that the temperature of oil rises from 7 degree celsius to 27 degree celsius in 10 minutes. find specific heat capacity of the oil.
Answers: 2
Mathematics, 18.03.2021 01:50
Mathematics, 18.03.2021 01:50
Mathematics, 18.03.2021 01:50
Mathematics, 18.03.2021 01:50
Social Studies, 18.03.2021 01:50
Mathematics, 18.03.2021 01:50
Mathematics, 18.03.2021 01:50
Mathematics, 18.03.2021 01:50