You hold one end of a string that is attached to a wall by its other end. the string has a linear mass density of 0.067 kg/m. you raise your end briskly at 11 m/s for 0.016 s, creating a transverse wave that moves at 37 m/s . part a how much work did you do on the string? express your answer with the appropriate units. w w = nothing nothing request answer part b what is the wave's energy? express your answer with the appropriate units.

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 bonds are found inside a water molecule

Which composition of water moves to begin a deepwater current?