Ii) water flows with an average speed of 3.0 m/s through a section of a stream that is 30 m wide and 1.0 m deep. the water then enters a 15 m wide section where the average speed of the water is 2.0 m/s. how deep is that 15 m wide section of stream (3 points)?

The 15 m wide section of the stream is 3 m deep.

Explanation:

The Flow rate of the water remains constant throughout.

Flow rate = Velocity x depth x width

Flow rate = (3)(30)(1)

Now the depth,width and velocity of the flow stream has changed but the flow rate still remains same. So,

Assuming depth to be D,

90 = (2)(15)(D)

D = 3 m

1.195000

explanation:

total mass=0.0117+0.0137+0.0881+0.0111

total mass= 0.01172kg

total velocity = 0.283-0.743+0.871-0.799+0.155+0.637+0.301=0.102

momentum=mv=0.1172*0.102=1.195000//

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it