What is the different features between the bar magnet and the horseshoe magnet? ?

Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity

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.

Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius