What is the displacement for a driver who travels 10 km to get to a point that is 4 km from his starting point

What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?

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.