Normal force is an equal but opposite force to weight.
Weight = Normal force
weight=m×g
= 65×10
=650N
Explanation:
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Answer:

Explanation:
Na = Acceptor Concentration (cm-3) = 0
Nd = Donor Concentration (cm-3) = 
= Resistivity (Unit: ohm-cm)
n = electron concentration (cm-3)
q =Charge on electron = 




are fit parameter
Arsenic is used
=52.2
=1417

=222.2
For n type =

(ND>>NA ---> n-type) // Here The p-type sample is converted to n-type material by adding more donors than acceptors
n=ND-NA =1018/cm3
![\rho=[1.6*10-19*1018*222.2]-1 = 0.28 (ohm-cm)](https://tex.z-dn.net/?f=%5Crho%3D%5B1.6%2A10-19%2A1018%2A222.2%5D-1%20%3D%200.28%20%28ohm-cm%29)
R=0.28/5*10-4=560


Answer:
When the denominator of both ratios is the same, adding the ratio is simple. You just add the numbers to the left of the colon (this number is called the Ratio Numerator)xplanation:
I can think of two strategies:
1). Reduce/remove as much friction as possible from the
internal guts of the machine. Reduce the areas where two
surfaces contact each other, and use oil or grease to lubricate
the areas that can't be reduced.
2). Make the work INput greater.
Answer:
<u>Range</u><u> </u><u>is</u><u> </u><u>6</u><u>2</u><u>.</u><u>5</u><u> </u><u>metres</u>
Explanation:
Time of flight

for range, acceleration is zero
from second newton's equation:

but a = 0:
let range be x:

[ taken g to be 10 m/s² ]