Q&A Forum
1106 questions found
One of the square roots of a positive number is positive. What is the other one?
- positive
- negative
- positive or negative.
Jordi asking:
why?I dont understand.
A sphere with a radius of 2 cm has a surface area of
- 8pi cm^2.
- 16pi cm^2.
- 64pi cm^2.
DanailPS asking:
Why
Cable stops are manufactured from
- stainless steel.
- copper.
- magnesium alloy.
Gibbo280490 asking:
Can anybody please provide reference or proof of this answer?
The main reason why crimped joints are preferable to soldered joints is
- the quality of crimped joints will be constant.
- no flux is needed.
- there is no heat required.
Gibbo280490 asking:
I would say the answer should be the quality of the crimped joints will be constant? is there anything to back up the heat answer?
Surface corrosion on stainless steel is identified by
- red rust.
- white film.
- black pitting.
Gibbo280490 asking:
Why is this not Red Rust? i can find nowhere that states Surface corrosion on steel is 'Black Pitting'