The diagram below shows the relative amounts of biomass within an ecosystem. According to this diagram, what is the ratio of moray eels to shrimp?
A.
1 : 10
B.
1 : 100
C.
100 : 1
D.
10 : 1

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to: