Suppose the speed of the boat is x mph. Then upstream, it travels 5 hours at x-3 mph and so covers 5x - 15 miles.
When going downstream the boat covers the same distance, at x+3 mph, in 2.5 hours so (5x-15)/(x+3) = 2.5
Multiply through by 2*(x+3): 2*(5x-15) = 5*(x+3)
10x - 30 = 5x + 15 or 5x = 45 giving x = 9 mph.
A current yield is a bond's annual return based on its current price. This is different from its original price and face value.
15 miles
Whilst travelling downstream the boat travels at V + C mph where V is the speed of the boat in still water and C is the speed of the current. Whilst travelling upstream the speed is V - C mph. The downstream velocity = 24/2 = 12mph = V + C therefore C = 12 - V Velocity (speed) = Distance ÷ Time : therefore Distance = Velocity x Time. As the distance in either direction is the same then, 2(V+C) = 3(V-C) 2V + 2C = 3V - 3C V = 5C : substituting for C as C = 12-V V = 5(12 - V) = 60 - 5V 6V = 60 : V = 10 mph. Therefore, C = 12 - 10 = 2 mph The speed of the boat in still water is 10 mph and the speed of the current is 2 mph.
no
IRR stands for Internal Rate of Return. It is a financial metric used to measure the profitability of an investment. It represents the annualized rate of return at which the net present value of cash flows from an investment becomes zero.
Salmon seem to remember where they were hatched and will attempt to return to the spot. The unusual thing about this is, sometimes it involves swimming,upstream or against the current.
11 mph
The current is approximately 4 mph.
Fish swim upstream by powerfully thrusting their tails to counteract the current. They are then able to slowly but surely travel upstream.
The 'unusual' factors are - the way the fish return to the river where they hatched in order to mate and spawn - and the fact that, due to the vast amount of energy it took to reach their spawning ground, once they've mated the adults die !
The "River of No Return" is the nickname of a branch of the Salmon River in central Idaho. The river is famous for its strong rapids. The Lewis and Clark Expedition of 1805 was told that if they made it down this river, they would never be able to make it back upstream against the current. Without a motorboat, this still holds true today.
105 mph
There are no current plans for her to return.
There are no current plans for her to return.
Yes, there is a current flow through he return wire in a closed circuit. The only time there is no current flow through the return wire is when the circuit is open.
35 mph
35 mph