Answer:
Explanation:
The velocity of plane relative to earth is given by:
![V_{P/E}=\frac{d}{t}\\V_{P/E}=\frac{[-121i-20j]km}{0.490h} \\V_{P/E}=[-247i-41j]km/h](https://tex.z-dn.net/?f=V_%7BP%2FE%7D%3D%5Cfrac%7Bd%7D%7Bt%7D%5C%5CV_%7BP%2FE%7D%3D%5Cfrac%7B%5B-121i-20j%5Dkm%7D%7B0.490h%7D%20%20%5C%5CV_%7BP%2FE%7D%3D%5B-247i-41j%5Dkm%2Fh)
As the from given data.The velocity of plane relative to air is:
![V_{P/A}=[-210i]km/h](https://tex.z-dn.net/?f=V_%7BP%2FA%7D%3D%5B-210i%5Dkm%2Fh)
According to relative motion of velocity of the air relative to earth given by:
![V_{A/E}=V_{P/E}-V_{P/A} \\V_{A/E}=[(-247i-41j)km/h]-(-210i)km/h\\V_{A/E}=[-37i-41j]km/h\\](https://tex.z-dn.net/?f=V_%7BA%2FE%7D%3DV_%7BP%2FE%7D-V_%7BP%2FA%7D%20%5C%5CV_%7BA%2FE%7D%3D%5B%28-247i-41j%29km%2Fh%5D-%28-210i%29km%2Fh%5C%5CV_%7BA%2FE%7D%3D%5B-37i-41j%5Dkm%2Fh%5C%5C)
The magnitude is given as:
Answer:
is a reflection.
The image is real light rays actually focus at the image location). As the object moves towards the mirror the image location moves further away from the mirror and the image size grows (but the image is still inverted). When the object is that the focal point, the image is at infinity.
Explanation:
C
I took the tests earlier hope this helps
gamma radiation and heat flares from the sun, they use refelective gold sheets
Explanation:
formula for force is:
force=mass × acceleration
but in case of friction
force =coefficient of friction × Normal Reaction
F. = u × R
U = F/R
but when placed horizontally
R= M×G
M=mass=60kg
G=Gravity(10m/s or 9.8m/s)
F=140N
U=140/60×10
U=140/600
U=0.2333333333
approximately to 3 significant figures
U=0.233
if i am correct rate it 5 star
