Physics, 07.04.2020 02:21 rahulshahi7569
A glass plate 2.50 mm thick, with an index of refraction of 1.65, is placed between a point source of light with wavelength 600 nm (in vacuum) and a screen. The distance from source to screen is 1.35 cm . How many wavelengths are there between the source and the screen?
Answers: 3
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Which statements describe the relationship between science and society? check all that apply. science is influenced by the needs of society. science and society are independent. science seeks ways to meet the needs of society. scientists find new ways to address societal concerns. scientists improve existing products.
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Physics, 22.06.2019 10:00
Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?
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Physics, 22.06.2019 12:00
Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?
Answers: 3
Physics, 22.06.2019 12:30
Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.
Answers: 1
A glass plate 2.50 mm thick, with an index of refraction of 1.65, is placed between a point source o...
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