A0.800-m-long string with linear mass density m = 7.50 g> m is stretched between two supports. the string has tension f and a standing-wave pattern (not the fundamental) of frequency 624 hz. with the same tension, the next higher standing-wave frequency is 780 hz.
(a) what are the frequency and wavelenght of the fundamental standing wave for this string?
(b) what is the value of f?

f=gm1m2/d^2 it d

f is force g is gravitaiton constant, m1 is mass of first object, m2 is mass of second object. d is distance between two object

layer a is the exosphere and layer b is the thermosphere.   is the answer i think but i hope this .

nec chapter 5 contains

c. information on special occupancy areas

nec chapter 6 covers

a. special equipment

which of the following rules contain the words shall or shall not and must be adhered to?

b. mandatory rules

which of the following rules identify actions that are allowed but not required and typically cover options or alternative methods?

c. optional rules

which of the following serves as the introduction to the nec and provides an overview of the book?

a. nec article 90

organizations that test products for safety are

c. nrtls

the nec is published by the

a national fire protection association

the nec is divided into

b. 9 chapters

the nec provides informative annexes for

c. informational materials and examples

two terms from nec article 100 that trainees should become familiar with are

b. labeled and listed

explanation:

i'm on my way to history not a mistory.