10. a girl pulls a wagon along a level path for a distance of 44 m. the handle of
the wagon makes an angle of 22° above horizontal. if she pulls on the
handle with a force of 87 n, how much work is done?

On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( ρ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s.t.p.?

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost

When using the scientist method, which step comes last?