When something happens, energy is changed from one form into another. When you climb stairs, chemical energy in your food is changed into kinetic energy by your muscles, and into potential energy as you raise your body against gravity. The amount of energy transferred is measured in JOULES.
Answer : The value of
is
.
Explanation :
As we are given 6 right angled triangle in the given figure.
First we have to calculate the value of
.
Using Pythagoras theorem in triangle 1 :




Now we have to calculate the value of
.
Using Pythagoras theorem in triangle 2 :





Now we have to calculate the value of
.
Using Pythagoras theorem in triangle 3 :





Now we have to calculate the value of
.
Using Pythagoras theorem in triangle 4 :





Now we have to calculate the value of
.
Using Pythagoras theorem in triangle 5 :





Now we have to calculate the value of
.
Using Pythagoras theorem in triangle 6 :





Therefore, the value of
is
.
Answer:
1. They can help restore the natural part of the ecosystem. Protecting the forests, rivers, oceans, wetlands, etc.
2. Help small producers in the agricultural industry.
3. They can advertise and advocate for more people to use green energy (solar energy, wind energy, hydro energy, etc.)
Answer: the main purpouse of physical maps usually show the most important political boundaries, such as state and country boundaries. So, this is true.
Explanation: