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3 years ago

Which of the following best characterizes the field of physics

Physics

1 answer:

Sav [38]3 years ago

7 0

Would love to help you but there are no options for me to choose from

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Help DUE TONIGHT!

krok68 [10]

I have found this tool to hep you solve your question.

https://quizlet.com/76366884/ch15ch16physical-science-waves-sound-flash-cards/

8 0

3 years ago

In an extreme marathon, participants run a total of 100km; world-class athletes maintain a pace of 15 km/h. how many 230 Calorie

MAVERICK [17]

speed of the participants is given as

$v = 15 km/h$

$v = 15 \times \frac{1000 m}{3600s} = 4.2 m/s$

now the kinetic energy of the participant is given as

$KE = \frac{1}{2}mv^2$

$KE = \frac{1}{2}68\times 4.2^2$

$KE = 590.3 J$

As we know that

1 calorie = 4.2 J

$KE = 590.3\times \frac{1 cal}{4.2J} = 141.1 Cal$

so here 230 Calorie is provided by 1 bar

bar required is

$N = \frac{141.1}{230} = 0.61 bars$

7 0

3 years ago

Read 2 more answers

Which best describes the definition for the atomic mass of an element

Verizon [17]

Answer:

Atomic mass is the weighted average mass of an atom of an element based on the relative natural abundance of that element's isotopes. - Mass number: count of the total number of protons and neutrons in an atom's nucleus.

7 0

3 years ago

Read 2 more answers

Anybody wanna help? (Picture Included?)

MrRissso [65]

There is your answer

4 0

3 years ago

The first and second coils have the same length, and the third and fourth coils have the same length. They differ only in the cr

stealth61 [152]

Answer:

$\frac{R_2}{R_1}=\frac{A_1}{A_2}\\\frac{R_4}{R_3}=\frac{A_3}{A_4}$

Explanation:

The resistance of a conductor is directly proportional to its length and is inversely proportional to its cross-sectional area, this dependence is given by:

$R=\frac{\rho L}{A}$

$\rho$ is the material's resistance, L is the legth and A is the cross-sectional area.

For the first and second coils, we have:

$R_1=\frac{\rho L}{A_1}\\R_2=\frac{\rho L}{A_2}\\\rho L=R_1A_1\\\rho L=R_2A_2\\R_1A_1=R_2A_2\\\frac{R_2}{R_1}=\frac{A_1}{A_2}$

For the third and fourth coils, we have:

$R_3=\frac{\rho L'}{A_3}\\R_4=\frac{\rho L'}{A_4}\\\rho L'=R_3A_3\\\rho L'=R_4A_4\\R_3A_3=R_4A_4\\\frac{R_4}{R_3}=\frac{A_3}{A_4}$

6 0

3 years ago