A satellite in its parking orbit moves with a speed of \( 3 \mathrm{~km} \mathrm{~s}^{-1} \). Calculate the radius of its orbit. \[ \left[\mathrm{G}=6.67 \times 10^{-14} \mathrm{Nm}^{2} \mathrm{~kg}^{-2} \text {, mass of the earth, } \mathrm{M}_{\mathrm{e}}=5.97 \times 10^{27} \mathrm{~kg}\right] \]

The amount of force, \( F \), needed to lift an object using a lever varies inversely as the length, \( l \), of the lever. When a 24 -inch lever is used, a force of 240 pounds is needed. How much force is needed if a 36 -inch long lever is used? A. 120 pounds B. 160 pounds C. 252 pounds D. 360 pounds

3.33 • Uma canoa tem velocidade de \( 0,40 \mathrm{~m} / \mathrm{s} \) a sudeste em relação à Terra. A canoa se desloca em um rio que escoa a \( 0,50 \mathrm{~m} / \mathrm{s} \) para leste em relação à Terra. Determine o módulo, a direção e o sentido da velocidade da canoa em relação ao rio.

Encuentre el trabajo realizado cuando una particula se mueve en el campo de fuerzas \( F=3 x^{2} ;+(2 x z-y) j+z k \) a lo largo \( c \) de la cuna en el espacio \( x=2 t^{2} \quad y=t \quad z=4 t^{2} \), wando \( +E[0,1] \)

5) A liquid flows in a tube with a cross-sectional area of \( 0.0002 \mathrm{~m}^{2} \) at a speed of \( 4 \mathrm{~m} / \mathrm{s} \). Calculate: (a) The volume flow rate of the liquid. (b) The speed of flow if the radius of the tube is doubled.

Water flows through a tube of diameter 2 cm at an average speed of \( 3 \mathrm{~m} / \mathrm{s} \). The end of the tube is closed with a plug with ten holes, each with a radius of 1 mm , calculate the speed of the water flowing from each hole