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The photo-electric effect is the process in which a metal will emit electrons when light of a sufficiently high frequency is incident upon it, Before Einstein's description of the photo-electric effect th...

Creo que por ahora hay que aceptar el progreso científico y tecnológico pero hay que imponer una barrera cuando ya es demasiado. No hay que dejar que los robots reemplacen a los humanos, los humanos somos...

GHIJKLM

Use integration by parts. Let u = x^4 and let dv/dx = -sin(x). Find du/dx = 4x^3 and fin v = cos(x). Use the equation uv - int (v du/dx) = x^4 cos(x) - 4((x^4/4)*(sin(x)) = x^4 cos(x) - x^4 sin(x) = x^4 (...

I would teach them my essay system which never fails. It is based on titles and sub-titles. 

I. A, B / II. A, B / III A, B

Or I. A, B, C / II. A, B, C

I often suggest the first one as...