Force, energy and momentum

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67

Question 52

An electric pump raises water of density $\rho\,$ vertically through a height $h\,$ at a constant volume flow rate $R$ . The pump motor is connected to a power supply of potential difference $V\,$ and draws a current $I$ . The acceleration of free fall is $g$ .

Which expression gives the efficiency of the pump system?

$VIρRgh\frac{VI}{\rho R g h}$

$ρRghVIt\frac{\rho R g h}{V I t}$

$ρRghVI\frac{\rho R g h}{VI}$

$ρghVIR\frac{\rho g h}{V I R}$

Force, energy and momentum

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67

Question 52

An electric pump raises water of density $\rho\,$ vertically through a height $h\,$ at a constant volume flow rate $R$ . The pump motor is connected to a power supply of potential difference $V\,$ and draws a current $I$ . The acceleration of free fall is $g$ .

Which expression gives the efficiency of the pump system?

$VIρRgh\frac{VI}{\rho R g h}$

$ρRghVIt\frac{\rho R g h}{V I t}$

$ρRghVI\frac{\rho R g h}{VI}$

$ρghVIR\frac{\rho g h}{V I R}$

Force, energy and momentum

Question 52

Force, energy and momentum Questions

Force, energy and momentum

Question 52

Force, energy and momentum Questions