What happens when a sample of water turns to ice

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87

Apersons beliefs and general outlook, which act like filters on the information they receive are called ?

You are driving to the grocery store at 20 m/s. you are 110m from an intersection when the traffic light turns red. assume that your reaction time is 0.50s and that your car brakes with constant acceleration. how far are you from the intersection when you begin to apply the brakes? what acceleration will bring you to rest right at the intersection? how long does it take you to stop after the light changes? the known values: vi=20m/s xi=110m t=.50s vf=0m/s xf=0m a=?