Answer: PE = 800j, KE = 800J
Explanation:
To calculate the potential energy, we use the formula
Potential Energy = Mgh
M = 20kg, g = 10m/sˆ2 , h = 4m
=20 × 10 × 4
=800J
At the maximum height S = 4 and the initial velocity u = 0 The acceleration g = 10m/sˆ2
Using the third equation of motion
vˆ2 = uˆ2 + 2as
= 0ˆ2 + 2 × 10 × 4
vˆ2 = 80
Kinetic Energy (KE) is given by
KE = ½ mvˆ2
= ½ × 20 × 80
=800J
Answer:
recoding
Explanation:
The recoding is part of the information stored during a certain time, it is defined as the processes or operations that take place after the encoding of an original event and that causes changes in the memory traces. The circumstances that cause greater recoding are those in which the same events are repeated or those in which very similar events occur. That's why Chloe brings a memory of her as an example for a topic.
Answer:
revolutionizing oil and gas drilling across the country. However, without rigorous safety regulations, it can poison groundwater, pollute surface water, impair wild landscapes, and threaten wildlife.
Explanation:
Answer:
A. The need for services for the elderly has increased in the United
States.
Explanation:
The advancement in medical technology and the knowledge in fitness and nutrition increase the average life expectancy in United States. This resulted in the increase of older population in united states . By the year of 2016 alone, united states have around 15% if population who is older than 65 years old.
This is basically what referred to as the "Graying of America." This increase in the elderly population also caused The need for services for the elderly (such as for nursing , foods for elderly or caretaker facility)
