Physics, 26.01.2021 06:50 aromesburg
Suppose a special kind of glass has a refractive index which decreases from 2.4 to 2.0 when heated above 50°C. By how much does the critical angle of this glass increase when heated? Give your answer in degrees, without a unit and to two significant figures.
Answers: 2
Physics, 22.06.2019 18:30
Arailroad car collides with and sticks to an identical railroad car that is initially at rest. after the collision, the total kinetic energy of the two cars is a) the same as before. b) half as much as before. c) one third as much as before. d) one fourth as much as before. e) twice as much as before.
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Physics, 23.06.2019 01:00
The smallest particle of an element that retains its identity in a chemical reaction. true or false
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Physics, 23.06.2019 05:30
20) what is a magnetic field? 21) in which direction do magnetic field lines always point? 22) sketch a diagram showing how a plotting compass points around a 23) name two magnetic poles that will: a) attract each other b) repel each other. 24) explain why you can use a compass to navigate. 25) what's an electromagnet? 26) list two ways to increase the strength of an electromagnet. 27) the wire in a simple motor feels a force when a current flows through it. why is this? i need answers to check mine
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Suppose a special kind of glass has a refractive index which decreases from 2.4 to 2.0 when heated a...
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