Physics, 14.12.2021 14:00, jakails828
An object moves along the x-axis according to the
equation x(t)= 3t2 - 2t + 3 meters. Determine:
(a) The average velocity between t= 2 s and t= 3 s. (b)
The instantaneous velocity at t= 3 s. (C) The
instantaneous acceleration at t= 3 s.
Answers: 1
Physics, 22.06.2019 06:40, PerfectMagZ
Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?
Answers: 2
Physics, 23.06.2019 02:30, cassidyschmuzler
Find an expression for the electric field e⃗ at the center of the semicircle. hint: a small piece of arc length δs spans a small angle δθ=δs /r, where r is the radius. express your answer in terms of the variables q, l, unit vectors i^, j^, and appropriate constants.
Answers: 1
An object moves along the x-axis according to the
equation x(t)= 3t2 - 2t + 3 meters. Determine:
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