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Artemon [7]
3 years ago
7

Two waves overlap producing a new wave that exhibits destructive

Physics
2 answers:
suter [353]3 years ago
8 0

Answer:B

Explanation:

Nina [5.8K]3 years ago
5 0

Answer:

The answer is B. It has a smaller amplitude than the waves that overlapped to produce it.

Explanation:

I took AP EX quiz. Your welcome :)

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If rho(x,y) is the density of a wire (mass per unit length), then
lidiya [134]

Answer:

See description

Explanation:

With the given information we have:

x(t) = 1 + cos(t)\\ y(t)=sin(t)\\ \rho(x,y) = 3x

the interval is [0,\pi ]

now the mass m has the given expression:

m = \int \rho(x,y) dS

we will use the formula for a line integral and let:

dS=\sqrt{x'(t)^2 + y'(t)^2}=\sqrt{cos(t)^2 + sin(t)^2}dt=dt

therefore we have:

m=\int \rho(x,y)dS=\int\limits^\pi_0 {3*x}dS=\int\limits^\pi _0{3*(1+cos(t))dS\\=\int\limits^\pi _0{3*(1+cos(t))dt

we solve the integral:

m=3*\int\limits^\pi _0{(1+cos(t))dt= 3*(t+sin(t))\limits^\pi _0=3*\pi=9.42

7 0
3 years ago
The speed of light is 300,000,000 m/s, what is the frequency of an x-ray that has a wavelength of .1 m? ____Hz?
Fittoniya [83]

Answer:

Explanation:

The speed of light is 300,000,000 m/s. Shat is the frequency of microwaves with a wavelength of 0.01 meter

8 0
2 years ago
A helicopter flies 168 miles against the wind in 2 hours; with the wind, it can fly 252 miles in the same amount of time. find t
posledela

Let v_h be the speed of the helicopter in still air. Let v_w be the speed of the wind. Then, from the given information,

(v_h-v_w)2=168\\ (v_h+v_w)2=252\\

Adding the above 2 equations,

4v_h=168+252\\ 4v_h=420\\ v_h=105

The speed of the helicopter in still air 105 \;mi/hour

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