Choose the correct statement regarding energy production in the interior of a star and energy production in a power plant. A star uses fusion as an energy source by building larger atoms from smaller atoms. A nuclear power plant uses fusion as an energy source by building larger atoms from smaller atoms. A nuclear power plant uses fusion as an energy source by breaking apart atoms. A star uses fusion as an energy source by breaking apart atoms.

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

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)

The pilot of a helicopter hovers at an altitude of 1200 feet over a park. the angle of depression to the base of a statue is 17 degrees. the angle of depression to the nearest park exit, in line with the statue, is 14 degrees. to the nearest foot, what is the distance from the statue to the exit?