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Lorico [155]
3 years ago
15

What are some of the challenges of scuba diving?

Physics
1 answer:
EastWind [94]3 years ago
7 0
Some of the challenges are the unpredictable fish and the risk of scratching againest coral or drowning for not focusing on your oxygen tank.
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A gas expands from an initial volume of 0.040 m^3 and an initial pressure of 210 kPa to a final volume of 0.065 m^3 while its te
USPshnik [31]

Answer:

286

Explanation:

p1v1/T1=p2v2/T2

then subtitude your values

T2=760*0.65*273/210*0.040

T2=135/8.4=16+273=289

7 0
4 years ago
A person scuffing her feet on a wool rug on a dry day accumulates a net charge of -52 µc. how many excess electrons does this pe
LenKa [72]
Using q=1.60217662 E-19 C we get:
\frac{52 \times 10^-^6}{1.60217662 \times 10^-^1^9}=3.24558 \times 10^1^4 electrons
Then using 9.10938356E-31 kg as the mass, we get
 (3.24558 \times 10^1^4)(9.10938356\times 10^-^3^1)=2.95653\times 10^-^1^6kg
6 0
3 years ago
Read 2 more answers
Calculate the wavelength of a photon of electromagnetic radiation with a frequency of 151.7 mhz
AlekseyPX

The wavelength of a photon of electromagnetic radiation with a frequency of 151.7 Mhz is 1.978 meter

According to the question

The frequency of a photon of electromagnetic radiation = 151.7 Mhz

By using the Formula of wavelength and frequency

λ = C/f

Where,

λ (Lambda) = Wavelength in meters

C = Speed of Light (c = 3x10⁸ m/s)

f = Frequency

Now, the wavelength of a photon of electromagnetic radiation with a frequency of 151.7 Mhz is  

1 Mhz = 1000000 Hz

151.7 Mhz = 151.7 * 10⁶ Hz

λ = C/f  

Substituting the value of C and f  

  λ =  \frac{3*10^{8} }{151.7 * 10^{6}  }

  λ = 1.978 meter

Hence,  the wavelength of a photon of electromagnetic radiation with a frequency of 151.7 Mhz is 1.978 meter

To know more about  wavelength and frequency here:

brainly.com/question/18651058

#SPJ4

5 0
2 years ago
Hello please help i’ll give brainliest
KatRina [158]

Answer:

Antarctica and Australia were one landmass millions of years ago

Explanation:

Thats the answer I'm very sure of it

5 0
3 years ago
Read 2 more answers
Why is it when a ballerina stands on her toes she exerts more pressure than an elephant on all fours
Murrr4er [49]

I'm not sure that's true ... we'd need to see some numbers.
But if it is true, it's the same reason why some places don't
want ladies to walk on their floors with high heels.

Pressure is        (weight) divided by (area).

Pressure exerted
by a ballerina      =    (ballerina's weight)/(area of her toe on the floor)

Pressure exerted
by an elephant    =    (elephant's weight)/(area of 4 elephant feet)

Pressure exerted by
a lady in high heels  = (lady's weight) / (area of 1 or 2 heels)

You can see that the greatest weight might not exert the greatest
pressure, and the smallest weight might not exert the smallest
pressure.  The area is important, and it takes an awful lot of toes
or high heels to equal the area of one or more elephant's feet.
7 0
4 years ago
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