The density of un-set concrete is 2.40 x 10 3 kg/m 3 . When a block with volume 0.0708 m 3 is submerged in the liquid, a force of 66.7 N is needed to keep it from sinking. a. Find the weight of the block.

The answer to your question is weight =  1667 N  

Explanation:

Data

density = 2.40 x 10³ kg/m³

volume = 0.0708 m³

Force = 66.7 N

weight of the block = ?

- Formula

  density = mass / volume

- Solve for mass

   mass = density x volume

-Substitution

   mass = (2.40 x 10³)(0.0708)

-Result

   mass = 169.92 kg

-Calculate the weight of the body

   weight = mass x gravity

-Substitution

   weight = 169.92 x 9.82

-Simplification

   weight = 1666.9 N ≈ 1667 N        

explanation:

earth's surface is mainly heated by the absorption of infrared radiation from the sun.

evaporation occurs because molecules in liquid water are warmed ( usually by the sun) and vibrate quicker, becoming less dense and rise.

condensation occurs because molecules in water vapor are cooled and therefore vibrate more slowly thus becoming more dense and eventually fall to earth.

lines of equal barometric pressure on a weather map are called: isobars : lines of equal temp on a weather map are called: isotherms.​

v=ir = 3x15 =45 v