A certain thermal energy is produced in the hot wire ammeter when AC Current of maximum intensity 14A passes through it. Then the DC Current intensity which produces the same thermal energy in the same wire equals approximately a) 7A
b) 10A
c) 14A
d) 20A​

According to the tide table below what time of day will the highest tide occur?

After a big snowfall, you take your favorite rocket-powered sled out to a wide field. the field is 195 m across, and you know that your sled accelerates at a rate of 3.65 m/s2 when the rocket is on. how much time will it take the sled to cross the field starting from rest, assuming the rocket is on the whole time?

An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?