The answer is B. The electric screw driver increased the work. You would rather have an electric one than doing it all by hand. Hope this helps!
Answer:
option E
Explanation:
given,
Parallax angle(d) = 1 arcsecond
using Parallax formula

p is the parsecs angle which is measured in 1 arcsecond
d is the distance in parsec
now,



we know,
1 parsec = 3.26 light year
hence, the answer will be option E
Alpha radiation is the name for the emission of an alpha particle in fact an helium nuclei, beta radiation is the emission of electrons or positrons , and gamma radiation is the term used for the emission of energetic photons.
9.45g of acetic acid are present in vinegar. Hope this helps and pls give thanks!!