Answer:
I think the correct answer is the skier at the top.
Explanation:
cause potential energy is equal to mgh.
here mass and gravitational acceleration is same for all 3, but the top fellow has more height
everyone would die, earth needs sunlight for all living things to survive
Answer:
infrared waves
radio waves
ultraviolet waves
Explanation:
Radio waves are used for communication such as television and radio.
Infrared light is used by electrical heaters, cookers for cooking food, and by infrared cameras which detect people in the dark.
Ultraviolet radiation can kill bacteria that are present in water - this sterilises the water and makes it safe to drink.
Solids-are molecules that are together at all times( unless changed by a liquid or gas)
liquid-are molecules that move around freely in 1 space but can be changed to solid or gas
gas- molecules that move around freely and can be hot or cold depending
plasma- a material that goes to forming a cell or a liquid without any structual particles
There you go!
Answer:
<h2>90 J</h2>
Explanation:
The work done by an object can be found by using the formula
workdone = force × distance
From the question we have
workdone = 30 × 3
We have the final answer as
<h3>90 J</h3>
Hope this helps you