The health benefits Tom receives from his employer cover 43% of the total monthly premium of $345.00. How much does Tom have to
2 answers:
Answer:
The Amount tom has to pay is $196.65 therefore, Option b is correct
Step-by-step explanation:
Tom recieves 43% of total monthly premium
That means out of 100% he is getting 43% he has to pay (100%-43%)= 57% of $345.00
The amount Tom has to pay each month is it will become
Therefore,The Amount tom has to pay is $196.65 that is option b is correct
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Answer:
A Pipe that is 120 cm long resonates to produce sound of wavelengths 480 cm, 160 cm and 96 cm but does not resonate at any wavelengths longer than these. This pipe is:
A. closed at both ends
B. open at one end and closed at one end
C. open at both ends.
D. we cannot tell because we do not know the frequency of the sound.
The right choice is:
B. open at one end and closed at one end .
Step-by-step explanation:
Given:
Length of the pipe, = 120 cm
Its wavelength = 480 cm
= 160 cm and
= 96 cm
We have to find whether the pipe is open,closed or open-closed or none.
Note:
- The fundamental wavelength of a pipe which is open at both ends is 2L.
- The fundamental wavelength of a pipe which is closed at one end and open at another end is 4L.
So,
The fundamental wavelength:
⇒
It seems that the pipe is open at one end and closed at one end.
Now lets check with the subsequent wavelengths.
For one side open and one side closed pipe:
An odd-integer number of quarter wavelength have to fit into the tube of length L.
⇒ ⇒
⇒ ⇒
⇒ ⇒
⇒ ⇒
So the pipe is open at one end and closed at one end .