When should you use a piece of pipe as a leverage extension on the handle on a wrench?
a. as necessary to increase torque to loosen a stuck bolt or nut.
b. only on approved torque multiplying wrenches.
c. only if the pipe is less than 4' in length and is made from galvanized ridge conduit (grc) or intermediate metal conduit (imc).
d. never use a piece of pipe as a leverage extension on the handle on a wrench.

What is a possible result of higher air temperature caused by global warming

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.

Adiver named jacques observes a bubble of air rising from the bottom of a lake (where the absolute pressure is 3.50 atm) to the surface (where the pressure is 1.00 atm). the temperature at the bottom is 4.00 ∘c, and the temperature at the surface is 23.0 ∘c.what is the ratio of the volume of the bubble as it reaches the surface (vs) to its volume at the bottom (vb)? if jaques were to hold his breath the air in his lungs would be kept at a constant temperature. would it be safe for jacques to hold his breath while ascending from the bottom of the lake to the surface?