Physics, 26.01.2021 06:50 josebienka
a beam from a flashlight hits a piece of black coal and a piece of metal located 1 m away. the metal appears shiny compared to the coal. which of the following choices correctly explains how the light interacts with the coal and metal in this situation?
Answers: 2
Physics, 22.06.2019 07:30, sansyboy7891
Quantum mechanics applies to subatomic, atomic, nanometer-size, and micrometer-size systems. nanometer, micrometer, and kilometer-size systems. atomic, nanometer-size, and micrometer-size systems. subatomic, atomic, and nanometer-size systems.
Answers: 2
Physics, 22.06.2019 15:50, shaylawymannnnn
Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air
Answers: 3
Physics, 22.06.2019 18:00, levilugar
Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.
Answers: 2
a beam from a flashlight hits a piece of black coal and a piece of metal located 1 m away. the metal...
English, 24.02.2021 18:30
English, 24.02.2021 18:30
Mathematics, 24.02.2021 18:30
Mathematics, 24.02.2021 18:30
English, 24.02.2021 18:30