Using the letters for the seven colours and starting with R (Red), what is the correct order for the colours in a rainbow? Your answer should be in the form R Which of these seven colours has the shortest wavelength?

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Asap and show ! a 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c