Compare an altitude and a median of a triangle

the altitude of a triangle is the height of the triangle and the median of a triangle intersects each side
the median of a triangle is the height of the triangle and the altitude of a triangle bisects each side
the altitude of a triangle is bisects each angle of the triangle and the median of a triangle bisects each side
the altitude of a triangle is the height of the triangle and the median of a triangle bisects each side

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

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)

A10 kg box initially at rest is pulled 18 meters across a horizontal, frictionless surface by a 40 n force. what is the block’s final velocity over the 18 meters?