A 60. kg student jumps from the 10. meter platform at ASU's swimming complex into the pool below.   a.    Determine her Eg at the top of the platform.

b.    How much Ek does she possess at impact?
What is her velocity at impact?

c.    Repeat steps a and b for a 75 kg diver.

d.    If she jumped from a platform that was twice as high, how many times greater would be her velocity at impact (compare to 60 kg woman)?

e.    How much higher would the platform have to be in order for her velocity to be twice as great (compare to 60 kg woman at 10.m height)?

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

The particle in a two-dimensional well is a useful model for the motion of electrons around the indole ring (3), the conjugated cycle found in the side chain of tryptophan. we may regard indole as a rectangle with sides of length 280 pm and 450 pm, with 10 electrons in the conjugated p system. as in case study 9.1, we assume that in the ground state of the molecule each quantized level is occupied by two electrons. (a) calculate the energy of an electron in the highest occupied level. (b) calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels. 9.27 electrons around the porphine ring (4), the conjugated macrocycle that forms the structural basis of the heme group and the chlorophylls. we may treat the group as a circular ring of radius 440 pm, with 20 electrons in the conjugated system moving along the perimeter of the ring. as in exercise 9.26, assume that in the ground state of the molecule quantized each level is occupied by two electrons. (a) calculate the energy and angular momentum of an electron in the highest occupied level. (b) calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels.

An owl dives toward the ground with a constant velocity of 4.40 m/s at 53.0° below the horizontal. the sun is directly overhead and casts a shadow of the owl directly below it. what is the speed (in m/s) of its shadow on level ground?