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How can I get a better mark in the writing part of my Spanish GCSE/A-Level?

Firstly, it's important to have a bank of topic-specific vocab, which would demonstrate a wider and higher-register vocabulary level. During lessons, keep vocab lists of new words and arrange them by topic, ...
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Answered by Sofia L. • Spanish tutor
2527 Views

What is the photo-electric effect and what impact did it have on the development of Quantum Mechanics?

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 the o...
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Answered by Oliver B. • Physics tutor
2203 Views

¿Crees que debemos aceptar todo el progreso científico y tecnológico? ¿En qué momento y en qué circunstancias debemos decir “no”?

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 me...
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Answered by Anais V. • Spanish tutor
2586 Views

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Answered by Sarah V. • Maths tutor
4474 Views

What is the indefinite integral of (x^4)*(-sin(x)) dx

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 (cos...
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Answered by Sarah A. • Maths tutor
10764 Views