# Recent questions in Advanced Physics

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# A transverse wave on a rope is given by y(x,t)= (0.750cm)cos(π[(0.400cm−1)x+(250s−1)t]).

Find- A) Amplitude- B) Period- C) Frequency- D) Wavelength- E) Speed of propagation- F) Is the wave traveling in the +x- or − x-direction?- G) The mass per unit length of the rope is 0.0500 kg/m. Find the tension?- H) Find the average power of the wave (Watts)?
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# The equation y(x,t)=acos2πf(xv−t) may be written as y(x,t)=acos[2πλ(x−vt)].

- A) Use the last expression for y(x,t) to find an expression for the transverse velocity vy of a particle in the string on which the wave travels. Express your answer in terms of the variables A, v, λ, x, t, and appropriate constants.- B) Find the maximum speed of a particle of the string.- Express your answers in terms of the variables A, v, λ, x, t, and appropriate constants.
2
almost 7 years ago

# Дана функция f (x) = (tgx) * x ^ 2 + (1-tga) + tga

дана функция f (x) = (tgx) * x ^ 2 (1-tga) + tga и уравнение (tg ^ 2a) f (x ^ 2) = f (f (x)) найти все функции f (x) для которые Соответствующий график. для каждой найденной функции постройте график и вычислите первую и вторую произвводные +
0

# I have a question about order of magnitude?

When I tried to solve order of magnitude questions, I realized that we found the answer as 4*10^7. But my book was converting this answer to this 4*10^7~10^8. I confused. Can you tell me what is happening?
1

# Nuclear physics

Fission fragments usually decay by emitting
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# A ball is thrown in such a way that it does not spin about its own axis. Does this mean that the angular momentum is zero about an arbitrary origin?

A ball is thrown in such a way that it does not spin about its own axis. Does this mean that the angular momentum is zero about an arbitrary origin?
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