The truck is going at a speed of 50 MPH.
Answer:
Mass of water, ![m=1.47\times 10^{12}\ kg](https://tex.z-dn.net/?f=m%3D1.47%5Ctimes%2010%5E%7B12%7D%5C%20kg)
Explanation:
Given that,
Surface area of the reservoir, A = 30 km² = 3 × 10⁷ m²
Average depth, d = 49 m
The volume of the reservoir is V such that,
![V=A\times d](https://tex.z-dn.net/?f=V%3DA%5Ctimes%20d)
![V=3\times 10^7\ m^2\times 49\ m](https://tex.z-dn.net/?f=V%3D3%5Ctimes%2010%5E7%5C%20m%5E2%5Ctimes%2049%5C%20m)
![V=1.47\times 10^9\ m^3](https://tex.z-dn.net/?f=V%3D1.47%5Ctimes%2010%5E9%5C%20m%5E3)
We have to find the mass of water is held behind the dam. It can be calculated using the expression for density. We know that density of water, d = 1000 kg/m³
Density, ![d=\dfrac{m}{V}](https://tex.z-dn.net/?f=d%3D%5Cdfrac%7Bm%7D%7BV%7D)
![m=d\times V](https://tex.z-dn.net/?f=m%3Dd%5Ctimes%20V)
![m=1000\ kg/m^3\times 1.47\times 10^9\ m^3](https://tex.z-dn.net/?f=m%3D1000%5C%20kg%2Fm%5E3%5Ctimes%201.47%5Ctimes%2010%5E9%5C%20m%5E3)
![m=1.47\times 10^{12}\ kg](https://tex.z-dn.net/?f=m%3D1.47%5Ctimes%2010%5E%7B12%7D%5C%20kg)
Hence, this is the required solution.
Answer:
spacing is 0.8307 mm
Explanation:
given data
wavelength = 500 nm
interference fringes N = 1.5 mm
wavelength = 640 nm
to find out
spacing between the fringes
solution
we know bright fringe spacing in double slit is express as
w × sinθ = N × wavelength
so angle is
sinθ = N × wavelength / w
and spacing is express as
spacing = d sinθ
and that is = N × (d/w) × wavelength
so
spacing = 1.5 × 360 / 650
so spacing is 0.8307 mm
<h2>Right answer: 8 m</h2><h2 />
When two waves propagate in the same medium, in the same or opposite direction, they <u>overlap (superposition</u>), that is, the individual waves are added producing a resultant wave. When the superposition of the waves occurs, they continue to advance after the encounter happens, conserving their properties, such as amplitude, frequency, wavelength and speed.
In this case, we have two water waves travelling in opposite directions with <u>differente amplitude</u>, when both waves encounter each other, at that moment the amplitude of the resultant wave is the sum of both, that is:
5m + 3m = 8 m
Therefore, the correct option is D
Answer:
Centrifugal force
Explanation:
In Space, It is in a way possible create an " artificial gravity" just by spinning the aircraft or space station. On spinning the space station the inhabitants feel an outward force or the centrifugal force, this outward force when equivalent to gravitational force is able to stimulate gravity.