Which of the following is a covalent compound?
1. H2O
2.KNO3
3.NaHCO3
4.All of th...
Answers: 1
Physics, 21.06.2019 20:30
Asmall metal bar, whose initial temperature was 10° c, is dropped into a large container of boiling water. how long will it take the bar to reach 70° c if it is known that its temperature increases 2° during the first second? (the boiling temperature for water is 100° c. round your answer to one decimal place.) sec how long will it take the bar to reach 98° c? (round your answer to one decimal place.)
Answers: 2
Physics, 21.06.2019 21:00
A150 w lamp emits light of wavelength 590 nm uniformly in all directions. what is the photon flux (photons per unit area per unit time) on a small screen at a distance 2.3 m from the lamp? assume the photons are uniformly distributed over the surface of a sphere of radius 2.3 m.
Answers: 2
Physics, 22.06.2019 08:30
The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.
Answers: 2
Physics, 22.06.2019 09:00
Why can blue light and yellow light combine to produce white light? question 17 options: they are both primary colors of light. they absorb each other's wavelengths. because blue, yellow, and white are primary colors. they are complementary colors of light.
Answers: 1
Mathematics, 08.06.2020 09:57
Mathematics, 08.06.2020 09:57
Social Studies, 08.06.2020 09:57
Mathematics, 08.06.2020 09:57
Mathematics, 08.06.2020 09:57
Mathematics, 08.06.2020 09:57
Mathematics, 08.06.2020 09:57
Mathematics, 08.06.2020 09:57
Mathematics, 08.06.2020 09:57
Mathematics, 08.06.2020 09:57
Mathematics, 08.06.2020 09:57