A4-foot spring measures 8 feet long after a mass weighing 8 pounds is attached to it. the medium through which the mass moves offers a damping force numerically equal to ï2 times the instantaneous velocity. find the equation of motion if the mass is initially released from the equilibrium position with a downward velocity of 5 ft/s. find the time at which the mass attains its extreme displacement from the equilibrium position. what is the position of the mass at this instant?

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Calculate the ratio of h+ ions to oh– ions at a ph = 6. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 6. are they the same? why or why not? record your explanation in table a. what is the concentration of h+ ions at a ph = 6? mol/l what is the concentration of oh– ions at a ph = 6? mol/l what is the ratio of h+ ions to oh– ions at a ph = 6? : 1

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? your