A beaker is filled to the 500 ml mark with alcohol. What increase in volume (in ml) the beaker contain when the temperature changes from 5°C to 30°C? (Neglect the expansion of the beaker, evaporation of alcohol and absorption of water vapor by alcohol.) C°, Palcohol = 1.12 x 104/ °C
Answer:
1.4 mL
Explanation:
Given that:
volume of alcohol [tex]V_0[/tex] = 500
Temperature change ΔT = (30° - 5°)C
=25° C
[tex]\beta_{ alcohol }= 1.12 \times 10^{-4} / ^0C[/tex]
The increase in volume ΔV = [tex]\alpha \times V_o \times \Delta T[/tex]
[tex]= 500 \times 1.12 \times 10^{-4} / ^0 C\times 25^0 C[/tex]
= 1.4 mL
How did engineers help to create a ceiling fan
Answer:
The electric ceiling fan was invented in 1882 by engineer and inventor, Philip Diehl. He had earlier invented an electric sewing machine and adapted the motor from this invention to create the ceiling fan. He called his invention the “Diehl Electric Fan” and it was such a success that he soon had many other people competing with him.
Explanation:
When you receive a vertical promotion, you are more likely to _______ than when you receive a horizontal promotion. a. Deal with a new department b. Gain management responsibilities c. Earn a similar salary d. Retain the same authority Please select the best answer from the choices provided A B C D
Answer:
b. Gain management responsibilities
Explanation:
When you receive a vertical promotion, you are more likely to Gain management responsibilities than when you receive a horizontal promotion.
