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What is the optimum angle to throw a snowball for maximum horizontal displacement? (Ignore air resistance, assume the snowball is thrown level with the ground. The angle is measured from the ground up)

Shortest answer: 45 degrees Short Answer: If the snowball is thrown at velocity v, at angle θ The vertical component is vsin(θ) The horizontal component is vcos(θ) v = u + at t = v/a (u = 0) Airtime = 2vsin(...
JT
Answered by James T. • Physics tutor
7328 Views

How much experience is enough when applying to medical schools?

This is a common stumbling block I'm sure many candidates reach, only to hear "how long is a piece of string?" My advice would be to snap up as much as you possibly can, don't turn anything down! I...
CS
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"A falling fertility rate is always beneficial to a country." Discuss this statement. (15 marks)

Answer: The average fertility rate of a country is the number of babies born per 1000 women of childbearing age (15-49). Overall LICs have higher fertility rates HICs. Therefore a falling fertility rate is a...
RC
Answered by Rosanna C. • Geography tutor
9780 Views

What evidence is there for evolution?

For IB Biology, there are three types of evidence for evolution you need to know: fossils, selective breeding and homologous structures. Fossils are preserved remains or traces of organisms from the past – t...
EF
Answered by Emma F. • Biology tutor
11262 Views

y = (x^3)/3 - 4x^2 + 12x find the stationary points of the curve and determine their nature.

first we find the first derivative of the function. Here dy/dx = x^2-8x+12. We set this to zero and factorise to obtain the roots of the function. Such that dy/dx = (x-6)(x-2)= 0. This gives the stationary p...
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Answered by Jordan M. • Maths tutor
5322 Views