AIEEE Exam

Suppose the maximum speed of a particle
carrying a sinusoidal progressive wave is vs.
When the displacement of a point on the string is
half its maximum, the speed of the point is

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AIEEE Other Question

Sinusoidal waves travel on four different strings,
all with the same tension. Three of the strings
have the same linear mass density, but the fourth
has a different linear mass density. Use the
mathematical forms of the waves, given below,
to identify the string with the different linear
mass density. In the expressions x and y are in
centimeters and t is in seconds -
(A) y(x, t) = (2 cm) sin(2x − 4t)
(B) y(x, t) = (2 cm) sin(4x − 10t)
(C) y(x, t) = (2 cm) sin(6x − 12t)
(D) y(x, t) = (2 cm) sin(8x − 16t) Two ideal gases, each consisting of N
monatomic molecules, are in thermal equilibrium
with each other and equilibrium is maintained as
the temperature is increased. A molecule of the
first gas has mass m and a molecule of the
second has mass 4m. The ratio of the changes in
the internal energies ∆E4m/∆Em is -
(A) 1/4 (B) 1/2
(C) 1 (D) 4