9514 1404 393
Answer:
-25
Step-by-step explanation:
Consult your memory of multiplication tables to determine the square root of 100.
10×10 = 100
√100 = 10
Then multiply that value by -2.5
-2.5×10 = -25
___
Of course, you can use a calculator or spreadsheet to evaluate this expression, too.
The unit vector is shown in the image. Hope it helps.
Answer:5.8
Step-by-step explanation:
Given
weight of chair with person on it =2118 N
Barber applies a force of 63 N
Using pascal's law
we know pressure around both sides is equal
i.e. 
pressure=
=
=
substituting values
![\left [\frac{r_{plunger}^2}{r_{piston}^2}\right ]](https://tex.z-dn.net/?f=%5Cleft%20%5B%5Cfrac%7Br_%7Bplunger%7D%5E2%7D%7Br_%7Bpiston%7D%5E2%7D%5Cright%20%5D)
=
![\left [\frac{r_{plunger}}{r_{piston}}\right ]](https://tex.z-dn.net/?f=%5Cleft%20%5B%5Cfrac%7Br_%7Bplunger%7D%7D%7Br_%7Bpiston%7D%7D%5Cright%20%5D)
=![\left [ \frac{2118}{63}\right ]^{0.5}](https://tex.z-dn.net/?f=%5Cleft%20%5B%20%5Cfrac%7B2118%7D%7B63%7D%5Cright%20%5D%5E%7B0.5%7D)
=5.798
Answer:
The area of the circle is 8cm^2
Step-by-step explanation:
