The resistance of metals is often temperature dependent. the dependence is characterized by the temperature coefficient of resistance (tcr), which is related to temperature according to r=rref[1+tcr*(t-tref)] over limited temperature range. rref is the resistance at some temperature tref. if the tcr of a platinum wire is 0.00393/°c and its resistance is known to be 20.1 ω at 25°c, what is the temperature of the wire if its resistance is 19.5 ω?
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Physics, 22.06.2019 10:30, legendman27
You are given two vectors a⃗ =−3.00ι^ 5.00j^ and b⃗ =5.00ι^ 2.00j^. let the counterclockwise angles be positive.
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Physics, 22.06.2019 19:50, carlinryan
An electron moves with a constant horizontal velocity of 3.0 × 106 m/s and no initial vertical velocity as it enters a deflector inside a tv tube. the electron strikes the screen after traveling 26 cm horizontally and 19 cm vertically upward with no horizontal acceleration. what is the constant vertical acceleration provided by the deflector? (the effects of gravity can be ignored.)
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Physics, 23.06.2019 02:00, MajentaSnow11601
Abeam of light shining from water to air strikes the surface at an angle greater than 48 degrees and produces total internal reflection. if the incident beam is at a 50 degree angle what angle is the reflected beam 13 25 50 100
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The resistance of metals is often temperature dependent. the dependence is characterized by the temp...
Mathematics, 13.07.2019 03:30
Mathematics, 13.07.2019 03:30
Mathematics, 13.07.2019 03:30
Physics, 13.07.2019 03:30
Mathematics, 13.07.2019 03:30
Mathematics, 13.07.2019 03:30