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oksano4ka [1.4K]
3 years ago
15

I need help immediately I appreciate it a lot :)

Physics
1 answer:
Rasek [7]3 years ago
8 0
I honestly don’t know but I need some points , thank you
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A tsunami is a large wave that is caused by
marysya [2.9K]
An earthquake or disturbance undersea.


~ThePirc
5 0
3 years ago
Read 2 more answers
Compare the magnitude of the electromagnetic and gravitational force between two electrons separated by a distance of 2.00 m. As
Lesechka [4]
First you need to know about two laws, which are:
1) Coulomb's law
2) Newton's law of gravitation

1.
According to Coulomb's law, Electric force between TWO charges is:
F_{e} =  \frac{k*q_{1}*q_{2}}{r^{2}} -- (A)

Where, k = 1/(4*π*epsilon_not) = 9 * 10^{9} \frac{Nm^{2}}{C^{2}}

Both q_{1} and q_{2} = -1.61 x 10^{-19} C
r = Distance between the two charges = 2.00m

Plug-in the above values in (A), you would get:

F_{e} = (9 * 10^{9} ) (1.61 * 10^{-19}  * 1.61 * 10^{-19}) / (2*2)  

F_{e} = 5.83* 10^{-29} N

2.
According to Newton's law of gravitation:
F_{g} =  \frac{Gm_{1}m_{2}}{r^{2}} -- (B)

Where G = Gravitational constant = 6.674 * 10^{-11} m^{2} kg^{-1}s^{-2}

m1 = m2 = Mass of the electron = 9.11 * 10^{-31} kg
r = 2.0 m

Plug-in the above values in (B), you would get:

F_{g} = (6.674 * 10^{-11}) ( 9.11 * 10^{-31}  *  9.11 * 10^{-31}}[/tex]) / (2*2)  

F_{e} = 5.83* 10^{-29} N

F_{e} = 1.38 * 10^{-71} N

Now do Fe over Fg, you would get:
\frac{F_{e}}{F{g}}  = 4.23 * 10^{42}

Ans: So the blanks are:
1) 5.82
2) 1.38
3) 4.23

-i
6 1
3 years ago
Read 2 more answers
The average human walks at a speed of 5km per hour if your PE teacher asks you to walk for 30 minutes in gym class how far would
Leokris [45]

Answer:

2.5km

Explanation:

Assuming you also walk with the average human walking speed of 5 km/h. We know that speed=distance/time and now making distance the subject, distance is a product of speed and time. The time is 30 minutes, expressed in hours will be 30/60=0.5 hours. Substituting 5km/h for speed and 0.5 hours for time then the diatance covered will be

Distance=5*0.5=2.5 km

6 0
3 years ago
The Mistuned Piano Strings Two identical piano strings of length 0.800 m are each tuned exactly to 480 Hz. The tension in one of
IRINA_888 [86]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The answer is

     T_2 = 1.008 % higher than T_1

    T_2 = 0.99 % lower than T_1

Explanation:

   From the question we are told that

         The first string has a frequency of   f_1 = 230 Hz

          The period of the beat is  t_{beat}  = 0.99s

Generally the frequency of the beat is

             f_{beat} = \frac{1}{t_{beat}}

  Substituting values

            f_{beat} = \frac{1}{0.99}

                   = 1.01 Hz

From the question

        f_2 - f_1 = f_{beat}   for  f_2  having a  higher tension

So

       f_2 - 230 = 1.01

               f_2 = 231.01Hz

 From the question

            \frac{f_2}{f_1} = \sqrt{\frac{T_2}{T_1} }

         \frac{T_2}{T_1}  = \frac{f_2^2}{f_1^2}

Substituting values

         \frac{T_2}{T_1}  = \frac{(231.01)^2}{(230)^2}

      T_2 = 1.008 % higher than T_1

    For f_2 having a lower tension

           f_1 - f_2 = f_{beat}

  So

       230 - f_2 = 1.01

            f_2 = 230 -1.01

                  = 228.99

  From the question

            \frac{f_2}{f_1} = \sqrt{\frac{T_2}{T_1} }

         \frac{T_2}{T_1}  = \frac{f_2^2}{f_1^2}

    Substituting values

         \frac{T_2}{T_1}  = \frac{(228.99)^2}{(230)^2}

      T_2 = 0.99 % lower than T_1        

5 0
4 years ago
Which of the following is true about a combustion reaction?
Ksenya-84 [330]

Answer:

b

Explanation:

this is because inoder. for combustion or burning to take place oxygen must be available

7 0
3 years ago
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