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:
Indeed, non working population is an unfair burden on working population. This is so because the unemployed population, in general, tends to receive assistance from the government, which in turn is financed through taxes that are collected from those who do work. Thus, there is a kind of arbitrary redistribution of income that damages workers in favor of those who do not work.
Answer:
Scientists are able to understand Earth's interior by studying seismic waves.
Seismic waves travel at different speeds when they pass through different types of material, so by studying seismograms, scientists can learn a lot about Earth's internal structure.
