If 100 bu of corn per acre remove 90lb of nitrogen, phosphorus, and potassium (N, P, and K, respectively), how many pounds of N, P, and K are removed by the yield of 135u per acre?
I try to figure out how to starting to solve this problem but don't know how
some help please
change KE =WF
ke=1/2mv
1/2*25000kg*18m/s^2 =75000x
d = 54M
no conduction don't have enough time to stoo
I hope this one right...because if not then I am stuck
A .145kg drop from sixth story building window. If each story is 2.5m tall, use energy conservation to find the rock velocity when it strikes the ground. (ignore air resistance)
I have:
mass .145kg
h 2.5m each story
2.5m * 6 = 15m (total height)
gravity 9.8ms^2
V=?
I am confuse, what...
I have the Mass=25000kg
friction force = 75000n
time 18m/s
I don't know where the 45m fit in
I was confuse, to get stopping distance don't I need the coefficient of friction between the train and the rail? usually it giving but in this problem it not
I think I need to use this equation...
a 25000kg train travel down a track at 18m/s. a cat wander onto the track 45m ahead of train, causing the conductor to slam on the brakes. The train skids to a stop. If the brakes can provide 75,000 Newtons of friction, will the conductor have enough stopping distance to avoid hitting the cat?
a 25000kg train travel down a track at 18m/s. a cat wander onto the track 45m ahead of train, causing the conductor to slam on the brakes. The train skids to a stop. If the brakes can provide 75,000 Newtons of friction, will the conductor have enough stopping distance to avoid hitting the cat?