Amotorcyclist goes around a curve of 400-ft radius at a speed of 60.0 mph (note: stay
in b. e. to ft/s) (ignore the fact that a motorcyclist would lean
him/her upright for simplicity). what must the coefficient of friction between the tires and
the road be to make it through the turn? (reminder g= -32 ft/s) (ans. u= 0.605) think
about what rain or snow on the road would do to the coefficient of friction.

The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.0 × 10-6 c/m2. (a) what is the magnitude of the electric field within the cell membrane? (b) find the magnitude of the electric force that would be exerted on a potassium ion (k+; charge = +e) placed inside the membrane.

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island