For both Tracker experiments, calculate the average vertical acceleration, where the time period is t = 0.10 second to t = 1.00 second. Consider only the magnitude of the vertical velocity in the calculations. Record your results to three significant figures. Comment: How does the average acceleration of the two balls compare to the theoretical value of -9.81 meters/second2, and how do the accelerations of the two balls compare to each other?

The dipole moment of the water molecule (h2o) is 6.17x10^-30 c.m. consider a water molecule located at the origin whose dipole moment p points in the +x-direction. a chlorine ion ( of charge-1.60x10^-19c , is located at x=3.00x10^-9m . assume that is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis can be used. a) find the magnitude of the electric force that the water molecule exerts on the chlorine ion. b) what is the direction of the electric force. -x-direction or +x-direction c) is this force attractive or repulsive?