The air pressure in a tank is measured using an inclined manometer whose arm is inclined 45 degree from the horizontal line. the densities of the air and water are 1.225 kg/m3 and 1000 kg/m3, respectively. determine the gauge pressure of air in the tank. quiz 3

15. give an example for some particles or waves that are moving faster than light in everyday life 16. what is a laser? 17. what is an oscilloscope? 18. what does it means practically that nothing is faster than light in vacuum? 19. what is vacuum?

What causes the formation of ocean currents?

When a lead acid car battery is recharged by the alternator, it acts essentially as an electrolytic cell in which solid lead(ii) sulfate is reduced to lead at the cathode and oxidized to solid lead(ii) oxide at the anode. suppose a current of is fed into a car battery for seconds. calculate the mass of lead deposited on the cathode of the battery.