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A small ball is projected with speed 15 m/s at an angle of 60 degrees above the horizontal. Find the distance from the point of projection of the ball at the instant when it is travelling horizontally.

If we break down the velocity vector into its x and y components, then the point at which the ball would be moving horizontally is the point where the y velocity is zero. The y velocity decreases initiall...

DD
Answered by Dimitar D. Physics tutor
2936 Views

Explain why for any constant a, if y = a^x then dy/dx = a^x(ln(a))

So let's start with taking the natural log on both sides of y=ax, giving us ln(y) = ln(ax). Using the laws of logarithms we can write this as ln(y) = xln(a).Next, we differentiate bo...

JM
Answered by James M. Maths tutor
11100 Views

How do I answer the question 'Why do you want to study medicine?'

This is a common question asked during many medical school interviews. The common answers may include ' I want to help people' or 'I love learning about the human body' - which, despite sounding cliché, a...

JS
1835 Views

Can you explain the bond angle and shape of the molecule NH3?

In NH3, the nitrogen atom is bonded to three hydrogen atoms. By drawing the Lewis structure, the central nitrogen atom shows 3 covalent bonds to hydrogen and one lone pair. Valence Shell Electron Pair Rep...

JJ
Answered by Jenny J. Chemistry tutor
13911 Views

How should I prepare for an Oxbridge interview?

Vying away from the simple 'be yourself' or 'be passionate about your subject' which are both terribly vague and difficult concepts to teach, the simplest and best secret I can give to anyone applying for...

LB
1505 Views

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