Awave has a frequency of 450 hz and a wavelength of 0.52 m. what is the
speed of the wave?
use v = fx.
a. 230 m/s
b. 0.0012 m/s
c. 870 m/s
d. 0.042 m/s

A. 230 m/s

Explanation:

The speed of a wave is given by:

where

f is the frequency

is the wavelength

For the wave in the problem,

f = 450 Hz (frequency)

(wavelength)

Substituting into the equation, we find the speed:

b) phosphorus pentoxide

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