The note a4, above middle c has a frequency of 440 hz. sounds travels at about 340 m/s. what is the wavelength of middle a?

Wavelength of wave is 0.7727 m .

Step-by-step explanation:

Given :The note a4, above middle c has a frequency of 440 hz. sounds travels at about 340 m/s.

To Find: what is the wavelength of middle a?

Solution:

We are given that The note a4, above middle c has a frequency(f) of 440 hz .

Velocity of wave (c) = 340 m/s

Formula of wavelength:

So , wavelength =

                           =

Thus the wavelength of wave is 0.7727 m .

answer: c, the green line

step-by-step explanation:

there is no black line, eliminate b.

simple interest implies periodic payments, but the red line shows no payments, eliminate d.

simple interest has equal payments. if paid say every day, the graph is about a straight line (actually a stairstep).

the yellow line is not straight, eliminate a.

check: the green line is straight, answer is c.

simple interest with positive interest rate gives a straight line sloping up to the right. green line:

g(t) = $100 + ($200-$100) ÷ (20 years) × (t years)

= $100 + (4%/year) × ($100)(t years)

incidentally, the yellow line curving upward represents continuously compounded interest

y = $100 × 2^(t years / (14 assuming the yellow line hits $200 at 14 years. 2^0 is 1, so y(0) = $100; 2^(14/14) is 2, so y(14) = $200.