please write the final answer 1-An object floats with half its volume beneath th

Question

please write the final answer 1-An object floats with half its volume beneath the surface ofthe water. The weight of the displaced water is 921 N. What is theweight of the object?
Weight of object in N? 2- A 17000 N vehicle is to be lifted by a 21 cm diameterhydraulic piston. What force needs to be applied to a 7.9 cmdiameter piston to accomplish this?
Minimum force needed on small piston? Units 3- Water flows through a horizontal pipe of cross-sectional area2.6 cm2 at a pressure of 8.1 atm. The flow rate is 1.7 x10-3 m3/s. At a valve, the effectivecross-sectional area of the pipe is reduced to 1.4 cm2.What is the pressure (in atm) at the valve?
Pressure (in atm) at valve?
please write the final answer 1-An object floats with half its volume beneath the surface ofthe water. The weight of the displaced water is 921 N. What is theweight of the object?
Weight of object in N? 2- A 17000 N vehicle is to be lifted by a 21 cm diameterhydraulic piston. What force needs to be applied to a 7.9 cmdiameter piston to accomplish this?
Minimum force needed on small piston? Units 3- Water flows through a horizontal pipe of cross-sectional area2.6 cm2 at a pressure of 8.1 atm. The flow rate is 1.7 x10-3 m3/s. At a valve, the effectivecross-sectional area of the pipe is reduced to 1.4 cm2.What is the pressure (in atm) at the valve?
Pressure (in atm) at valve? 2- A 17000 N vehicle is to be lifted by a 21 cm diameterhydraulic piston. What force needs to be applied to a 7.9 cmdiameter piston to accomplish this?
Minimum force needed on small piston? Units A 17000 N vehicle is to be lifted by a 21 cm diameterhydraulic piston. What force needs to be applied to a 7.9 cmdiameter piston to accomplish this?
Minimum force needed on small piston? Units 3- Water flows through a horizontal pipe of cross-sectional area2.6 cm2 at a pressure of 8.1 atm. The flow rate is 1.7 x10-3 m3/s. At a valve, the effectivecross-sectional area of the pipe is reduced to 1.4 cm2.What is the pressure (in atm) at the valve?
Pressure (in atm) at valve? Water flows through a horizontal pipe of cross-sectional area2.6 cm2 at a pressure of 8.1 atm. The flow rate is 1.7 x10-3 m3/s. At a valve, the effectivecross-sectional area of the pipe is reduced to 1.4 cm2.What is the pressure (in atm) at the valve?
Pressure (in atm) at valve?

Explanation / Answer

Pl post only one qn per post. That is the Cramster Rule. W = B = W' 921 N          Weight of thevessel = 921N 2. Presuures are equal          W/.D12 =F/.D22            F= Wx(D22/D12)              = 17000x(7.9/21)2              = 2406 N 3. P1 +0.5.v12   = Const             v1 = V1/t.a1 =1.7x10-3/2.6x10-6 = 0.6538x103m/s             v2 = V1/t.a2 =1.7x10-3/1.4x10-6 = 1.2143x103m/s    P2 -P1    = +0.5.(v12 .v22 )= 0.5x1000x-1.04745xx106                  = - 523.5 N/m2                   = - 0.0052 atm    (1 atm = 101325N/m2)      P2              =  8.1- 0.0052                   = 8.095 atm                     = - 523.5 N/m2                   = - 0.0052 atm    (1 atm = 101325N/m2)      P2              =  8.1- 0.0052                   = 8.095 atm   

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