An exerciser begins with his arm in the relaxed vertical position OA, at which the elastic band is unstretched. He then rotates his arm to the horizontal position OB. The elastic modulus of the band is k = 60 N/m – that is, 60 N of force is required to stretch the band each additional meter of elongation. Determine the moment about O of the force which the band exerts on the hand B.

## An exerciser begins with his arm in the relaxed vertical position OA, at which the elastic band is unstretched. He then rotates his arm to the horizontal position OB. The elastic modulus of the band is k = 60 N/m – that is, 60 N of force is required to stretch the band each additional meter of elongation. Determine the moment about O of the force which the band exerts on the hand B.

An exerciser begins with his arm in the relaxed vertical … Read More...

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Based on molecular mass and dipole moment of the five compounds in the table below, which should have the highest boiling point? A) 3 2 3 CH CH CH B) 3 3 CH OCH C) 3 CH Cl D) 3 CH CHO E) 3 CH CN 30)

## Based on molecular mass and dipole moment of the five compounds in the table below, which should have the highest boiling point? A) 3 2 3 CH CH CH B) 3 3 CH OCH C) 3 CH Cl D) 3 CH CHO E) 3 CH CN 30)

Question 3 An electric dipole moment, consists of two equal but opposite charges, + q and -q, separated by a distance, d. The magnitude of the dipole moment is p = qd and the electric dipole moment vector points from the negative towards the positive charge of the configuration. Consider a water molecule. The measured value of the electrical dipole moment of the water molecule is about . An ionized hydrogen atom happens to be 3.5 nanometers away from the center of the water molecule on the side away from its two hydrogen atoms and along the line defined by the molecule’s dipole moment. (Take the center of the water molecule to be the center of its oxygen atom. Also consider the water molecule to be essentially a small, nearly a point object). How large is the force on the ionized hydrogen atom and what is its direction? A. , attractive B. , repulsive C. , attractive D. , repulsive + E. , attractive

## Question 3 An electric dipole moment, consists of two equal but opposite charges, + q and -q, separated by a distance, d. The magnitude of the dipole moment is p = qd and the electric dipole moment vector points from the negative towards the positive charge of the configuration. Consider a water molecule. The measured value of the electrical dipole moment of the water molecule is about . An ionized hydrogen atom happens to be 3.5 nanometers away from the center of the water molecule on the side away from its two hydrogen atoms and along the line defined by the molecule’s dipole moment. (Take the center of the water molecule to be the center of its oxygen atom. Also consider the water molecule to be essentially a small, nearly a point object). How large is the force on the ionized hydrogen atom and what is its direction? A. , attractive B. , repulsive C. , attractive D. , repulsive + E. , attractive

Question 3 An electric dipole moment, consists of two … Read More...
Replace the loading system by an equivalent resultant force and couple moment acting at point A. Assume F1 = 950 N and F2 =300 N.