• True
• False
• #### 2.  The easiest way to open a heavy door is by applying the force

• Near the hinges
• In the middle of the door
• At the edge of the door far from the hinges
• At the top of the door

• True
• False
• #### 4.  The different types of energies associated with a molecule are __________

• Vibrational energy
• electronic energy
• Rotational energy
• All of these
• #### 5.  The energy in joules of a photon of wavelength 355 nm is

• 5.596 x 1019 J
• 5.596 x 1028 J
• #### 6.  A body with a definite shape that doesn't change is:

• period
• angular acceleration
• rigid body
• #### 7.  The formula used to find a torque is...

• (m)(g)
• (F) cos(Ɵ)
• (F)(r)( sin θ\thetaθ  )
• (m)(a)
• #### 8.  __________ (ω)– the rate at which a body rotates about an axis (radians per second)

• linear speed
• rotational speed
• angular speed
• velocity
• #### 9.  The microwave active molecules are

• HCl, OCS
• CO,CO2
• Both a) and b)
• None of the above

• 1 m
• 1 mm
• 1000 nm
• 100 m
• #### 11.  Molecules which are having _______ are microwave active.

• Dipole moment
• High pressure Detector
• Principle axis
• Acidity

• NH3
• HCl
• N2
• H2O.
• #### 13.  The value of torque depends on the rotation axis and the _______________________

• magnitude of applied force.
• mass of object
• moment inertia of object
• shape of object
• #### 14.  From the rotational microwave spectrum of 1H35Cl, we find that B = 10.59342 cm-1 . Given that the masses of 1H and 35 Cl are 1.0078250 and 34.9688527 amu, respectively, determine the bond length of the 1H35Cl molecule

• 1.274 x 10-10 m
• 1.674 x 10-10 m
• 1.474 x 10-10 m
• 1.0274 x 10-10 m
• #### 15.  Calculate the moment of inertia, I, of the molecule 1H35Cl. The masses of the two atoms are mH = 1.673 x 1027 kg and mCl = 5.807 x 1026 kg. The equilibrium bond length of the molecule is 1.275 Å.

• 2.644 x 1047 kg m2
• 2.644 x 1027 kg m2
• 2.644 x 1044 kg m2
• 2.644 x 1024 kg m2
• #### 16.  The product of the force times the lever arm; the movement of the force about the axis is:

• torque
• lever arm
• rotational inertia
• angular momentum
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