Answer:
Economics is the study of how societies use scarce resources to produce valuable commodities and distribute them among different people.
Explanation:
The ultimate goal of economic science is to improve the living conditions of people in their everyday lives.
Hope this helps!
Answer:
P = 180.81 J
Explanation:
Given that,
Mass of a object, m = 4.1 kg
It is lifted to a height of 4.5 m
We need to find the potential energy of the object due to gravity. It is given by the formula as follows :
P = mgh Where g is acceleration due to gravity
P = 4.1 kg × 9.8 m/s² × 4.5 m
P = 180.81 J
Hence, the potential energy is 180.81 J.
Choice ' C ' is a true statement.
The other choices aren't.
There are some missing details in the question. Found them on internet:
- the mass of the cart is m=40 kg
- The height of the incline is h=300 m (see attached figure)
Solution:
the gravitational potential energy of an object is given by

where
m is the mass of the object
g is the gravitational acceleration
h is the height of the object above the reference point (usually taken as the ground)
By applying this formula, we find the potential energy of the cart at the top of the incline: