The displacement y is expressed as a function of x and t in terms of the wave numberk and the angular frequency. write the equivalent equations in which y is shown as a function of x in terms of (a) kand v, (b) 1 and v(c) and fand (d) f and v.

Explanation:

The displacement equation is given by :

(a)

Since,

The above equation is in terms of k and v.

(b)

(c)

(d)

Where

k is the propagation constant

v is the speed of wave

f is the frequency of a wave

is the wavelength

Hence, this is the required solution.

emily ruth's annual premium is $1058.50

step-by-step explanation:

emily ruth is a female of 27 years age purchasing 20 year endowment insurance with face value $25000.

from the given table,

for females, the age of a male 3 years younger should be used.

so, we have to check for 24 year male for 20 year endowment.

it is 42.34 for every $1000 face value.

for a face value of $25000,

it is 25 * 42.34 = $1058.50

∴ emily ruth's annual premium is $1058.50