Predict the positions in cm−1 (wavenumbers) of the first three absorption bands in the rotational spectrum of 14N2 (re = 1.094 ˚A, mass=14.00 u. a.) and 1H2 (re = 0.7417 ˚A, mass=1.008 u. a.) using the rigid rotor model.

The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

There are weak or strong attractive forces between atoms of liquids with a high viscosity