Volume is 1/3 bh.
11 times 12 is 132. 132 times 1/3 is 44
ANSWER : 44
Answer:
![5.22\cdot 10^5 Pa](https://tex.z-dn.net/?f=5.22%5Ccdot%2010%5E5%20Pa)
Step-by-step explanation:
The pressure exerted by an object is given by:
![p=\frac{F}{A}](https://tex.z-dn.net/?f=p%3D%5Cfrac%7BF%7D%7BA%7D)
where
F is the magnitude of the force
A is the area of the surface perpendicular to the force
In this problem, the force is the weight of the books + the shelf, which is given by
![F=mg](https://tex.z-dn.net/?f=F%3Dmg)
where
m = 262 kg is the total mass
is the acceleration of gravity
Substituting,
![F=(262)(9.8)=2568 N](https://tex.z-dn.net/?f=F%3D%28262%29%289.8%29%3D2568%20N)
The area of the four legs is:
![A=4(3.0 cm\cdot 4.1 cm)=4(12.3 cm^2)=49.2 cm^2 = 49.2\cdot 10^{-4} m^2](https://tex.z-dn.net/?f=A%3D4%283.0%20cm%5Ccdot%204.1%20cm%29%3D4%2812.3%20cm%5E2%29%3D49.2%20cm%5E2%20%3D%2049.2%5Ccdot%2010%5E%7B-4%7D%20m%5E2)
Therefore, the pressure exerted on them is:
![p=\frac{F}{A}=\frac{2568}{49.2\cdot 10^{-4}}=5.22\cdot 10^5 Pa](https://tex.z-dn.net/?f=p%3D%5Cfrac%7BF%7D%7BA%7D%3D%5Cfrac%7B2568%7D%7B49.2%5Ccdot%2010%5E%7B-4%7D%7D%3D5.22%5Ccdot%2010%5E5%20Pa)
Answer:
6. c. 120
7. $6.45
Step-by-step explanation:
1. 150 x 0.20 = 30
2. 150- 30= 120
1. 43 x 0.15= 6.45
Answer:
A
Step-by-step explanation:
E is the center of the line (or segment) in this case