How much electrical potential energy is stored in a capacitor that has 4.0 10-10 C of charge on each plate and a potential difference across the plates
of 20.0 V? (Use PE-2001)
A. 2.0 x 10-11
B. 4.0 * 10-ºj
C. 1.0 * 10-11
D. 8.0 x 10-9 j
SUB

Calculate the ratio of h+ ions to oh– ions at a ph = 7. 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 = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1

According to the tide table below what time of day will the highest tide occur? (2 pt) the highest tide will occur at

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal