Wavelength of red light = 650 nm
Here the unit is nanometer, nano means 10⁻⁹
And wavelength of water = 2m
1 nanometer = 10⁹ meter
So, 2 meter = 2 x 10⁹ nm and 650nm = 6.5 x 10⁻⁷ m
now you can see the difference how much wavelength of water is bigger than wavelength of red light.
if we find the difference between them
650 nm= .00000065 m
2m - .00000065m = 1.99999935
so, the water wave is ~1.99999935 meters larger than the red light wave
Answer: 9300 kcal
Explanation: Given: Latent heat of fusion of aluminum is 93 kcal/kg.
That is for melting 1 kg of aluminium at 660 amount of heat required is = 93kcal
Thus for 100 kg of aluminium at 660 amount of heat required is=
Thus the amount of energy needed to melt 100 kg of aluminum at the melting point is 9300 kcal.
Answer:
<em>t=14.96 sec</em>
Explanation:
<u>Diagonal Launch
</u>
It's a physical event that happens where an object is thrown in free air (no friction) forming an angle with the horizontal reference. The object then describes a path called a parabola.
The object will reach its maximum height and then return to the height from which it was launched. The equation for the height is
:
Where vo is the initial speed, is the angle, t is the time and g is the acceleration of gravity
.
In this problem we'll assume the arrow was launched from the ground level (won't consider the archer's height). Thus , and:
The value of y is zero twice: when t=0 (at launching time) and in t= when it goes back to the ground. We need to find that time by making
Dividing by
Then we find the total flight time as
It would be 7.22 degrees Celsius.
Steps: (45°F − 32) × 5/9 = 7.222°C
You can look up the answer key to that , that’s what I always do and it always pops up