Answer:
A. 29.4 Joules
Explanation:
Given parameters:
Mass of the book = 1.5kg
Height of lift = 2m
Unknown:
Potential energy acquired = ?
Solution:
Potential energy is the energy due to the position of a body.
Mathematically;
Potential energy = mgh
m is the mass of the body
g is the acceleration due to gravity = 9.8m/s²
h is the height
Potential energy = 1.5 x 9.8 x 2
Potential energy = 29.4J
Answer:The Korean Peninsula lies close to the landmass of Asia. Because of this, much of it has a continental climate of cold winters and warm or hot summers. The north is closer to the mainland, so it has the greater temperature extremes. The southern part of the peninsula has a humid subtropical climate, with temperatures moderated by the surrounding seas.
Explanation:
Wet land reduce the evaporation rate thus improve water quality.
Sample response:
A convenience sample is used. The sample could be biased because it limits the population to listeners of that radio station at a certain time. Callers may be more likely to have a strong opinion on the issue.