Anoop decides to measure the rate at which the temperature changes as the altitude increases what would be an appropriate unit for anoop's purpose? choose one a: pa/m b: c/km c: m/pa d: km/c *c= celsius

C/km

Step-by-step explanation:

Rate at which the temperature changes as per altitude change =

Change in the temperature is measured in Celcius (C) and change in the altitude is measured in Kilometers (km).

Note that altitude is nothing but height.

Hence, the appropriate unit for Anoop's purpose is C/km.

the value of v.w= -12.

step-by-step explanation:

we are given three vector r,v and w as:

r = < 5, -5, -2> ; v = < 2, -8, -8> ; w = < -2, 6, -5>

we know that r,v and w could also be represented as:

r=5i-5j-2k

v=2i-8j-8k

and w= -2i+6j-5k

where i,j and k are the unit vectors of x,y and z-axis respectively.

also we know that it has the following property:

i.i=1 ; j.j=1; k.k=1

and i.=j.i=i.k=k.i=j.k=k.j=0

i.e. when we multiply two vectors or we find it's dot product we need to only multiply the components of x coordinates with each other; y with each other and z with each other.

hence, v.w= (2i-8j- -2i+6j-5k)

                  = 2×(-2)+(-8)×(6)+(-8)×(-5)

                  = -4-48+40

                  = -12

hence, v.w= -12

160

step-by-step explanation:

idk

i hope i