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What are the changes in energy that an object experiences when it is launched vertically at a given velocity into the air and falls back to the ground? This question ignores air resistance.

When the object is launched into the air it has a kinetic energy proportional to its velocity squared. As it travels its energy is converted into gravitational potential energy as it slows down due to the...

AH
Answered by Andrew H. Physics tutor
1594 Views

Explain why the structure of benzene cannot be acurately described using Kekule's structure (cyclohexa-1,3,5-triene).

During analysis of benzene we see that the bond lengths and angles are all the same. In the theoretical molecule however, due to the differing lengths of bonds between double and single bonds, the bond le...

WT
Answered by William T. Chemistry tutor
2764 Views

Write the equation for photosynthesis

6H2O + 6CO2 --> C6H12O6 + 6O2

NS
Answered by Nathan S. Biology tutor
2147 Views

Given g(x) = 4* sin (3*x), find the value of g'(pi/3).

Using the table of standard derivatives given at the beginning of the Higher Paper we have, for f(x) = sin(ax), f'(x) = a * cos (ax)and so with this we have, g(x) = 4 * sin(3x), g'(x) = 4 * 3...

RM
Answered by Romy M. Maths tutor
976 Views

A projectile is fired vertically upwards from the ground. Does it take longer for the projectile to reach the apex of its trajectory or for the projectile to return from the apex back to the ground? Explain your reasoning. [Don't ignore air resistance]

(This is an A-level physics question of the type one might be expected to be asked during an oxbridge-style interview). Firstly, a free-body diagram of the forces acting on the projectile, as well as a ve...

DP
1749 Views

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