Answer:
1.31 m
Explanation:
The relationship between frequency and wavelength of a sound wave is

where
c is the speed of the wave
f is the frequency
is the wavelenfth
In this problem, we have
c = 343.06 m/s
f = 261.63 Hz
So we can solve the formula for the wavelength:

Answer:
The shear modulus of the polymer is 5 MPa
Solution:
As per the question:
displacement of the top plate, d = 2 mm = 0.002 m
Horizontal Force, P = 2 kN = 2000 N
Width of the block, w = 100 mm = 0.1 m
By small angle analysis:
Angle, 
Now,
Stress,
= 

Answer:
A) ρ=
B) μ=
C) v=
D)e=
Explanation:
A)
The magnetic field can be find knowing the current is the charge per second
β= 
β= 8.75x10^{19}e*s
Electron density
ρ=
B)
μ= 
μ
C)
The drift speed using last information found

D)
To compared the random thermal motion and the current's drift speed

Answer:
v = 30.39 m/s
Explanation:
given,
mass of glider,M = 680 Kg
mass of the skydiver, m = 68 Kg
horizontal velocity,V = 30 m/s
when skydiver releases, velocity,v = 30 m/s
velocity if the glider,v' = ?
use the conservation of momentum
M V = m' v' + m v
m' = 680-68 = 612 Kg
680 x 30 = 612 x v + 60 x 30
612 v = 18600
v = 30.39 m/s
since the skydiver's speed will be the same as before release
The glider should continue to travel at 30.39 m/s since there are no external forces acting on it