The direction of the fourth displacement is θ = 12.775 ( south of west)
Explanation:
write down the values in the question,
The passage is 180m west, 290m in the direction 45° east of south, 280m at 30° east of north.
x = 290 × cos 45° + 280 × sin 30° -180
x=165.06 m
y= 280 cos ( 30° - 290 × sin (45°)
y= 37.426°
θ = tan ^-1 (y/x) = tan^-1 (37.426 / 165.06)
θ= 12.775° ( south of west)
Answer:
Use Aufbau's principle,
1s^2,2s^2,2p^6,3s^2,3p^6,4s^2
Fill 20 electrons,
Max number of electrons that sub shells can hold,
s=2
p=6
d=10
f=14
D) a liquid evaporates faster at higher temperatures
When an object is becomes warm its an example of exothermic reaction.
Answer:
90°
Explanation:
This angle is the measured between the force applied and the displacement where the force vector and the displacement vector are on opposite direction.
The formula for work in this case is ;
W=F*d* cos ∅ where ;
F= force, d= distance and ∅ is the work angle
For minimum work ∅ = 90°
For maximum work ∅ = 0°