The law of conservation of energy states that OA.
energy cannot be created and it cannot change form.
OB.
energy cannot change form and it cannot be destroyec
Oc. energy cannot be created and it cannot be destroyed.
OD.
energy can be created and can be destroyed.

Heena wants to measure the volume of a ball that is 24 cm across. how should she set up her equation?

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z

The ultracentrifuge is an important tool for separating and analyzing proteins. because of the enormous centripetal accelerations, the centrifuge must be carefully balanced, with each sample matched by a sample of identical mass on the opposite side. any difference in the masses of opposing samples creates a net force on the shaft of the rotor, potentially leading to a catastrophic failure of the apparatus. suppose a scientist makes a slight error in sample preparation and one sample has a mass 10 mg larger than the opposing sample. if the samples are 12 cm from the axis of the rotor and the ultracentrifuge spins at 70,000 rpm, what is the magnitude of the net force on the rotor due to the unbalanced samples? ( be thorough on your answer)