Using the periodic table and your knowledge of atomic structure. compare the number of electrons in a carbon-12 and carbon-14 isotope.
a) both have 6 electrons.
b) carbon-12 has 6 electrons and carbon-14 has 8 electrons.
c) carbon-12 has no electrons and carbon-14 has 2 electrons.
d) carbon-12 has 12 electrons and carbon-14 has 14 electrons.

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?

A14 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.

The total amount of energy contained in an object