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1. Would you expect phosphorus to exhibit an NMR spectrum? Why or why not2. When radio-frequency energy is absorbed by a nucleus with a spin of 1/2 that is in a magnetic field, what happens3. How does the irradiation of nuclei in FT-NMR instruments differ from irradiation in other types of NMR instruments? What are the advantages of FT-NMR over the other NMR techniques4. In many respects, the spectrum of CH3CH2I (iodoethane) appears to be identical to that of ethanol. What are the differences in the two spectra and why do these differences arise.
An electric clothes dry operates on a voltage of 220V and draws a current of 20A. How long does the dryer take to dry a full load of clothes that weighs 6.0 kg wet and 3.7kg dry
A 5 kg ball is thrown upward with an initial speed of 30 meters per second. Suppose there is a constant air resistance of 25N opposing the motion during its entire up and down path
Two steel juggling balls each carry a charge of 2.75 ?C. determine the distance between the centers of the two balls
The 4{rm kg} block in the figure is attached to a vertical rod by means of two strings. When the system rotates about the axis of the rod, the strings are extended and the tension in the upper string is 83N.
A 2.5 meter nylon fishing line used to hold up an 8.0 kilogram fish has a diameter of 1.6 millimeter. Determine how much is the line elongated
A 1.0-kg mass is projected vertically upward from ground level with an initial speed of 45 m/s. How much work is done on the mass by air resistance
In a particular Millikan oil-drop apparatus, the plates are 2.25 centimeter apart. Find what strength of electric field is needed to hold such a drop stationary against gravity if the drop contains five excess electrons
A 4lb block and a 13lb block, connected by a string slide down a 30 degree inclined plane. The coefficient of kinetic friction between the first block mentioned is 0.10; between the second block and the plane it is 0.20. Find the tension(in pounds) i..
Provide your answer in m/s in scientific notation to three significant digits (i.e. 1.15*10^2)
Compute the most probable distance that a nitrogen molecule will traverse in tissue after 0.5 s if the molecule experiences 1012 collisions/s; assume that the mean free path in air is 10-7 m.
Many lamps have a switch that lets you choose three levels of brightness. The bulbs in this type of lamp have not one but two filaments inside, which are wired in parallel and have their own switches.
A conducting spherical shell of inner radius b and outer radius c is concentric with a small metal sphere of radius a
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