What is that?? Please tell us
Answer:
A. To find the mass flow rate.
We use= 220 x 0.355/ 60
= 1.3kg/s
B. Volume flowrate is = mass flowrate / density
But density is 1000kg/m³
= 1.3kg/s/ 1000kg/m³
= 0.0013m³/s
C. Flow speead at 1
= 0.0013m³/s / (2 x 10-2m)²
= 6.5m/s
D.flow speed at 2
0.0013m³/s / (8x 10-2m)²
=1.63m/s
E. Gauge pressure at point 1
= 152+ 1/1000 ( 1.63)²- 6.5² + 1000( 9.8) ( 0-1.35)
= 119kpa
Vectors have a magnitude and direction whereas scalars only have a magnitude. The dot product of two vectors is a scalar.
The Third law is mixed with motion and force so if you drop a bouncy ball from 10ft it will hit the ground and loose half of its motion and come back up but only reach 5ft then when it bounces again only 2.5ft then so on so forth until it has no kinetic energy left.
