Answer:
Explanation:
1.
=
* cos
⇒ 16*cos32 ≈ 13.6 m/s (13.56)
2.
=
* sin
⇒ 16* sin32 ≈ 9.4 m/s
3.
=
=
(the g (gravity) depends on the country but i'll take the average g which is 9.2m/s^2)
≈ 3.6677+1.5 ≈ 5.2m
4.
=
=
≈ 23.5m (23.47)
5. -
answer 4 could be wrong, not certain about that one and i don't know 5
Explanation:
average speed = total distance ÷ total time taken
=30÷2 = 15 km/h
To solve this problem we will apply the concepts related to the principle of destructive and constructive interference. Mathematically this expression can be given as

Here,
n = Index of refraction
t = Thickness
m = Order of the reflection
= Wavelength
We have all of this values, therefore replacing,

Therefore the thickness of the oil slick is 233nm
Answer:
The formula of nitrogen trifluoride is NF 3
The formula of ammonia is NH3
The formula of magnesium hydroxide is Mg(OH)2
Explanation:
The formula of a compound refers to the correct representation of the compound using appropriate chemical symbols.
The formula of a compound is derived from the symbols of its constituent elements. The formula of the compound must correctly show the number of atoms of each element in one formula unit of the compound.
In the answer section, the correct names or formulas of some compounds have been shown
Answer:
h = 3.10 m
Explanation:
As we know that after each bounce it will lose its 11% of energy
So remaining energy after each bounce is 89%
so let say its initial energy is E
so after first bounce the energy is

after 2nd bounce the energy is

After third bounce the energy is

here initial energy is given as

now let say final height is "h" so after third bounce the energy is given as

now from above equation we have



