Answer:
magnitude=34.45 m
direction=
Explanation:
Assuming the initial point P1 of this vector is at the origin:
P1=(X1,Y1)=(0,0)
And knowing the other point is P2=(X2,Y2)=(19.5,28.4)
We can find the magnitude and direction of this vector, taking into account a vector has a initial and a final point, with an x-component and a y-component.
For the magnitude we will use the formula to calculate the distance 
between two points:
(1)
(2)
(3)
(4) This is the magnitude of the vector
For the direction, which is the measure of the angle the vector makes with a horizontal line, we will use the following formula:
(5)
(6)
(7)
Finding 
:
(8)
(9) This is the direction of the vector
Answer:
Heat content
Explanation:
Heat doesnt need an object to be large or small, for example a lump of coal is hotter and smaller than a big piece of brick.
Answer:
the doppler technique
Explanation:
The doppler technique was an indirect method for finding extrasolar planets and brown dwarfs from radial-velocity measurements using observation of Doppler shifts in the spectrum of the planet's parent star.
Answer:
I think is B. sound, nuclear, electrical
but if I wrong then I am so sorry
I'd say C to avoid situations in which alcohol is present and remain alcohol free
Refusal skills help people, most likely children it helps them avoid participating in risky behaviors and choices. such like alcohol in this case
Refusal skills Helps them resist peer pressure and help them make right choices
Hope that helps alrighty bye now!
