Distance = 130m
Velocity = 41m/s
Find the time it'll take for the aeroplane to be airborne.
from,
V = S/t
t = S/V
t = 130/41
t = 3.17s
then to find acceleration,
a = V/t
a = 41m/s/3.17s
a = 12.93 m/s²
Answer:
<h3>The answer is 3 kg</h3>
Explanation:
The mass of the object can be found by using the formula
f is the force
a is the acceleration
From the question we have
We have the final answer as
<h3>3 kg</h3>
Hope this helps you
Answer:
9.6352× 10²⁰ C atoms
Explanation:
From the given information,
The molar mass of Carbon = 12 g/mol
number of moles = 0.020g/ 12 g/mol
number of moles = 0.0016 mol
If 1 mole of C = 6.022 × 10²³ C atoms
∴
0.0016 mol of C = (6.022 × 10²³ C atoms/ 1 mol of C)×0.0016 mol of C
= 9.6352× 10²⁰ C atoms
Hence, the number of carbon atoms present in 0.020 g of carbon = 9.6352× 10²⁰ C atoms
The index of refraction of a material is the ratio between the speed of light in vacuum and the speed of light in that material:
where
n is the refractive index
is the speed of light in vacuum
v is the speed of light in the material
For sapphire, n=1.76, so if we re-arrange the previous equation and we use this value, we can calculate the speed of light in sapphire: