Two persons are not equally strong. One is weaker than another. They are going
to carry a wooden pole. Suggest them a way to carry the wooden pole in such a
way that the stronger person needs to apply more effort and the weaker person
needs to apply less force. Also explain the scientific reason behind your answer.

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)

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these

Anika asks eva to roll a basketball and then a bowling ball to her. which requires more force to roll, and why?