PLEASE HELP ASAP BEST ANSWER WILL BE MARKED BRAINLIEST The total mass of a pizza is 160 grams. When the pizza is cut into pieces, what parts equal the whole?

10 grams, 30 grams, 40 grams, 40 grams, and 30 grams
25 grams, 25 grams, 25 grams, 25 grams, and 25 grams
30 grams, 30 grams, 30 grams, 30 grams, 40 grams
50 grams, 30 grams, 30 grams, 30 grams, and 10 grams

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

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)