An electron and a proton enter the same velocity in a uniform magnetic field oriented vertically upwards. The two particles enter the field in parallel directions, in the same direction, perpendicular to the field lines. We know the mass of the electron m e = 1.9 kg 31 LA -10 and the mass of the proton mp = 67.1 kg 10 LA -27. Draw the trajectories of the particles and calculate the ratio between the radii of these trajectories.

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

An automobile steering wheel is shown. what is the ideal mechanical advantage? if the ama is 8, what is the efficiency of the steering wheel?

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)