The frequency of the wave is the frequency of that sine function ... 2,000π ... but that's the <u>angular </u>frequency, in radians per second.
To convert angular frequency to Hz, we have to divide by 2π.
So the frequency of this wave is <em>1,000 Hz. </em>
15+3=18km/hour
Think about it like this. The boat is going 15 faster than the river, and the river is going 3 faster than the bank, so the boat is going 18 faster than the river bank
Answer:
10.2 m
Explanation:
The position of the dark fringes (destructive interference) formed on a distant screen in the interference pattern produced by diffraction from a single slit are given by the formula:
where
y is the position of the m-th minimum
m is the order of the minimum
D is the distance of the screen from the slit
d is the width of the slit
is the wavelength of the light used
In this problem we have:
is the wavelength of the light
is the width of the slit
m = 13 is the order of the minimum
is the distance of the 13th dark fringe from the central maximum
Solving for D, we find the distance of the screen from the slit:
Answer:
Answer:
the shoe which having heel of smaller crossection area.
Explanation:
Pressure is defined as the thrust acting per unit area.
Thrust is the force which acts on the surface perpendicularly.
Pressure = force / Area
Its SI unit is Pascal or Newton per square metre.
As both the shoes have same mass, so force is same but the area of crossection is different for both the shoes.
Teh shoe having heel of small crossection area exerts more pressure on another person's feet then the shoe having heel which has more crossection area.
Explanation:
I believe it would be .4% if I have understood the question correctly.