The primary limitation of economics, Chetty argues, is that economists have a limited ability to run controlled experiments for theoretical macroeconomic conclusions. The high monetary cost and ethical standards make these types of controlled experiments impractical.

6 0

3 years ago

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A 400-kg box is lifted vertically upward with constant velocity by means of two cables pulling at 40. 0° on either side of the v

amm1812

Answer:

2558 N.

Explanation:Each rope takes half, so the vertical component of the force on each rope is half of this, or 1960 N.. But they are pulling at a 40 degree angle, so if t is the tension then t*cos(40) = 1960. This gives t = 2558 N.

7 0

3 years ago

I do believe that stuffed money is ........ A) hi’s B)his’ C)his

mojhsa [17]

I’m pretty sure is “his” which will be C

5 0

3 years ago

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7<img src="https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7By%7D" id="TexFormula1" title="\frac{x}{y}" alt="\frac{x}{y}" align="absmiddl

aev [14]

Answer:

simplify