Answer:
Explanation:
We shall convert the displacement in vector form using unit vector i and j
consider east as x axis and north as y axis
170 km at 68.0° east of north
D₁ = 170 sin68 i + 170cos 68 j
= 157 i + 63.68 j
230 km at 36.0° south of east
D₂ = 230 cos36 i - 230 sin 36 j
= 186 i - 135.2 j
Resultant Displacement = D₁ +D₂
= 157 i + 63.68 j + 186 i - 135.2 j
= 343 i - 71.52 j
Resultant magnitude
= √ ( 343² + 71.52²
= 350 km
Angle
= tan⁻¹ ( - 71.52 / 343 )
12⁰ south of east .
Answer:
Explanation:
TRISOMY 21 (NONDISJUNCTION)
Prior to or at conception, a pair of 21st chromosomes in either the sperm or the egg fails to separate. As the embryo develops, the extra chromosome is replicated in every cell of the body. This type of Down syndrome, which accounts for 95% of cases, is called trisomy 21.
Chiefly in science fiction) an invisible barrier of exerted strength or impetus.