Because the Earth rotates through two tidal<span> “bulges” every lunar day, coastal areas experience<em> two </em></span><em>high</em><span><em> and two low </em></span><em>tides</em><span><em> every 24 hours and 50 minutes</em>.
</span>High tides occur<span> 12 hours and 25 minutes apart. It takes six hours and 12.5 minutes for the water at the shore to go from </span>high<span> to low, or from low to </span>high<span>.
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Answer:
yes
Explanation:
its not a good thing for the rest of your life but you have a PS4
Answer:
406 nm
Explanation:
We are given;
Wavelength; λ = 775 nm
Refractive index of Calcium fluoride with wavelength of 775 nm as seen in the graph attached is approximately 1.4308.
n = 1.4308
Formula for the thickness of the film that would destruct the light is;
t = (m + 0.5)(λ/2n)
Where m is the order of the thickness.
The first smallest thickness is at m = 0 while the second smallest thickness is at m = 1.
Thus;
t = (1 + 0.5)(775/(2 × 1.4308))
t ≈ 406 nm
Answer:
The acceleration is about 9.8 m/s2 (down) when the ball is falling.
Explanation:
The ball at maximum height has velocity zero
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration due to gravity = 9.8 m/s² (positive downward and negative upward)
The accleration 9.8 m/s² will always be acting on the body in opposite direction when the body is going up and in the same direction when the body is going down. The acceleration on the body will never be zero
Answer = 31.5J (rounded to 1dp)
The question wants to find the work done, where work done can be calculated in the equation:
Work done = Force x Distance
The force is not given in the question, however they give the acceleration and mass, so you can calculate the force using Newton's second law:
Force = Mass x Acceleration
First, calculate the force. The mass is 45kg for the 3 boxes and the acceleration is 12.3m/s^2.
Force = 45 x 12.3
Force = 553.5N
Now that you have the force (553.5N) and distance (57cm), substitute those values into the equation for work done.
Make sure to convert the 57cm into metres (into SI units), otherwise the answer would be wrong.
57cm = 0.057m
Work done = Force x Distance
Work done = 553.5 x 0.057
Work done = 31.5J (rounded to 1dp)