a spherical weather balloon has a diameter of 10 m when filled with helium gas at a pressure of 106 kpa. what is the total mass the balloon can lift at 27°c

Asmall 21 kilogram canoe is floating downriver at a speed of 1 m/s. what is the canoe's kinetic energy?

Panel bc in fig. p2.76 is semi-circular, with the 3 meter radius and horizontal straight edge through point b. compute (a) the hydrostatic force of the water on the panel, (b) its center of pressure, and (c) the moment of this force about point b. assume atmospheric pressure on the dry side of the panel

Ais a machine that makes work easier when a single force is applied. a simple machine b compound machine c endangered machine d complex machine