Chemistry
calculate the pH of a 0.2moldm-3 solution of ammonia at 298K given that Kb for ammonia is 1.8x10-5
Math
It is not a school question. It is a real life question. So let's assume the interest averaged 4 % compounded daily over the 27 years.
Math
$2700 left in an account paying 4% interest would be worth how much today?
Economics
$2700 left in a variable rate interest bearing account in 1986 is worth how much today ?
Math
If I left $2700 in a variable rate interest account in 1986, how much is it worth today ?
physics
A block starts at rest and slides down a fric- tionless track. The acceleration of gravity is 9.81 m/s2 . It leaves the track horizontally, striking the ground (as shown in the figure above). b b b b b b b b b b b b 502 g h 2.2 m 4.4 m 9.81 m/s2 a) At what height h above the g...
Physics
Two banked curves on a highway have the same radius. Curve A is banked at 13 degrees and highway B is banked at 19 degrees. A car can travel around curve A without relying on friction at a speed of 18 m/s. At what speed can this car travel around curve B without relying on fri...
physics
A flight attendant pulls her 74.2 N flight bag a distance of 324 m along a level airport floor at a constant velocity. The force she exerts is 37.9 N at an angle of 55.2 above the horizon- tal. a) Find the work she does on the flight bag. Answer in units of J 024 (part 2 ...
physics
A 42.1 kg diver steps off a diving board and drops straight down into the water. The water provides an average net force of resistance of 1559 N to the diver’s fall. If the diver comes to rest 4.1 m below the water’s surface, what is the total distance be- tween the ...
physics
Calculate the speed of an 7.6×104 kg airliner with a kinetic energy of 1.2 × 109 J. Answer in units of m/s
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