A motorcyclist traveling at 30ms\(^{-1}\) starts to apply his brakes when he is 50m from the traffic light that had just turned red. If he reached the traffic light, his decceleration is
Which of these colours in the visible spectrum has the longest wavelength?
The power of a lens in diopters is
A man moves 6.0m East and then 10.0m N30ºE. How far is he from his starting point?
The density of water is 1g/cm\(^3\) while that of ice is 0.9g/cm\(^3\). Calculate the change in volume when 90g of ice is completely melted.
