Answer: A compound is a substance formed when two or more elements are chemically joined. Water, salt, and sugar are examples of compounds. When the elements are joined, the atoms lose their individual properties and have different properties from the elements they are composed of.
Answer:
Explanation:
Wind is air in motion. It is produced by the uneven heating of the earth's surface by the sun. Since the earth's surface is made of various land and water formations, it absorbs the sun's radiation unevenly. Two factors are necessary to specify wind: speed and direction.
The way their suppose to do it
Answer:
D and compound
Explanation:
because N2 is = to a compound
Answer:
Net force is 86.135 N , N 82.255° W
Explanation:
Resolving all forces vertically and horizontally.
First vertically.
20N = 20sin90 = 20
30N = 30sin(90-30)= 30sin60
=25.981
25N = 25sin0 = 0
35N =- 35sin80= -34.368
Total of vertical =
20+25.981+0-34.368
= 11.613N
For horizontal
20N =- 20cos 90 = 0
30N =- 30cos 30 = -25.981
25N = -25cos0 = -25
35N = -35cos 10 = -34.468
Total horizontal = 0-25.981-25-34.368= -85.349
Resultant force = √(11.613)²+(-85.349)²
= √(134.862) +(7284.452)
= √ 7419.314
= 86.135 N
Tan(tita°) = 11.613/-85.349
Tan(tita°) =- 0.136
tita° = Tan^-1(-0.136)
tita° = -7.745
North of West = 90-7.745
= 82.255°
