Answer:
Explanation:
mass of 1 L water = 1 kg . 
200⁰F = (200 - 32) x 5 / 9 = 93.33⁰C .
260.928 K = 260.928 - 273 = - 12.072⁰C . 
water is at higher temperature . 
Let the equilibrium temperature be t . 
Heat lost by water = mass x specific heat x  fall of temperature 
= 1 x 4.2 x 10³ x ( 93.33 - t ) 
Heat gained by copper 
= .25 x .385 x 10³ x ( t +  12.072 ) 
Heat lost = heat gained 
 1 x 4.2 x 10³ x ( 93.33 - t ) = .25 x .385 x 10³ x ( t +  12.072 ) 
 93.33 - t = .0229 ( t + 12.072)
93.33 - t = .0229 t + .276 
93.054 = 1.0229 t 
t = 90.97⁰C . 
 
        
             
        
        
        
To develop this problem it is necessary to apply the concepts related to Wavelength, The relationship between speed, voltage and linear density as well as frequency. By definition the speed as a function of the tension and the linear density is given by

Where,
T = Tension
 Linear density
 Linear density 
Our data are given by
Tension , T = 70 N
Linear density , 
Amplitude , A = 7 cm = 0.07 m
Period , t = 0.35 s
Replacing our values,



Speed can also be expressed as

Re-arrange to find \lambda

Where, 
f = Frequency,
Which is also described in function of the Period as,



Therefore replacing to find 


Therefore the wavelength of the waves created in the string is 3.49m
 
        
             
        
        
        
Idk its really weird because the ridges are making the quarter stand and therefore able to roll
        
             
        
        
        
Answer:
it's C
Explanation:
have a nice day............