Answer:
Explanation:
Tech Social Media giant FB is one of those companies. Not long ago the ceo was brought to court to accusations that his company was selling user data. Turns out this is true and they are selling their users private data to companies all over the word. Once the news turned to something else, people focused on something new but the company still continues to sell it's users data the same as before. This is completely unethical as the information belongs to the user and they are not getting anything while the corporation is profiting.
Answer:
Number of rollers required to complete the compaction are 2
Explanation:
The solution is given in the attachments.
Answer:d
Explanation:
(d) chain drive belt drive gear drive
Answer:
i hope this helps.
Explanation:
they are used for breaking concrete, can be positioned to break vertical and overhead surfaces, allows precisely chip away only specific areas.
Answer:
Option ‘a’ is the cheapest for this house.
Explanation:
Cheapest method of heating must have least cost per kj of energy. So, convert all the energy in the same unit (say kj) and take select the cheapest method to heat the house.
Given:
Three methods are given to heat a particular house are as follows:
Method (a)
Through Gas, this gives energy of amount $1.33/therm.
Method (b)
Through electric resistance, this gives energy of amount $0.12/KWh.
Method (c)
Through oil, this gives energy of amount $2.30/gallon.
Calculation:
Step1
Change therm to kj in method ‘a’ as follows:
![C_{1}=\frac{\$ 1.33}{therm}\times(\frac{1therm}{105500kj})](https://tex.z-dn.net/?f=C_%7B1%7D%3D%5Cfrac%7B%5C%24%201.33%7D%7Btherm%7D%5Ctimes%28%5Cfrac%7B1therm%7D%7B105500kj%7D%29)
$/kj.
Step2
Change kWh to kj in method ‘b’ as follows:
![C_{2}=\frac{\$ 0.12}{kWh}\times(\frac{1 kWh }{3600kj})](https://tex.z-dn.net/?f=C_%7B2%7D%3D%5Cfrac%7B%5C%24%200.12%7D%7BkWh%7D%5Ctimes%28%5Cfrac%7B1%20kWh%20%7D%7B3600kj%7D%29)
$/kj.
Step3
Change kWh to kj in method ‘c’ as follows:
![C_{3}=\frac{\$ 2.30}{gallon}\times(\frac{1 gallon }{138500kj})](https://tex.z-dn.net/?f=C_%7B3%7D%3D%5Cfrac%7B%5C%24%202.30%7D%7Bgallon%7D%5Ctimes%28%5Cfrac%7B1%20gallon%20%7D%7B138500kj%7D%29)
$/kj.
Thus, the method ‘a’ has least cost as compare to method b and c.
So, option ‘a’ is the cheapest for this house.