Answer: first option, the work output of the hairdryer will be less than the work input.
Explanation:
1) The work output measured in watts is the power of hair dryer measured in joules per second.
2) The hair dryer converts electrical energy from the wall outlet to mechanical and thermal energy: hot wind.
3) Nevertheless, you can never expect a 100% efficiency of the machines: due to friction, some energy is converted into useless energy.
So, efiiviency = power output / power input< 1 ⇒
power output = work output / time
input power = work input / time
⇒ work output / work input < 1
⇒ work output < work input.
Which is the first option: the work output of the hairdryer will be less than the work input
Scientific metod this is one of them
<span>boron trichloride + water → boric acid + hydrochloric acid</span>
Answer:
b) is above pH 7
Explanation:
In the case of titration of a weak acid with a strong base, equivalence point occurs at pH> 7; there is complete salt formation, then the pH is calculated through the salt.
Answer:
Definitely 3 and maybe 1 if you're allowed to tick multiple answers.
