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Archy [21]
3 years ago
7

What would a sound wave do if it traveled from a gas to a

Physics
1 answer:
NeTakaya3 years ago
5 0

Answer:

speed up

Explanation:

it's sound, not electromagnetic

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Which statement best describes the difference between how lenses and
Licemer1 [7]
D I think this is the right answer but I am not completely sure
4 0
3 years ago
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An air-filled parallel-plate capacitor is constructed with a plate area of 0.40 m2 and a plate separation of 0.10 mm. It is then
seropon [69]

Answer:

The charge stored  is  Q =  4.25 *10^{-7 } \ C

The energy stored is  E = 2.55*10^{-6} \ J

Explanation:

From the question we are told that

    The area of the plates is  A =  0.40 \ m^2

     The separation between the plate is d =  0.10 \ mm =0.0001 \ m

      The potential difference is  V =  12 \ V

       The permitivity of free space is  \epsilon_o  = 8.85 *10^{-12} C^2 \cdot N^{-1} \cdot m^2

         The dielectric constant of glass is K =  5.0

Generally the capacitance of this capacitor is

      C =  \frac{\epsilon_o  * A}{d}

substituting values

       C =  \frac{8.85*10^{-12}  * 0.40}{0.0001}

        C =   3.34 *10^{-8} \ C

The charge stored is mathematically evaluated as

         Q = CV

substituting values

        Q =  (3.54*10^{-8} * 12)

         Q =  4.25 *10^{-7 } \ C

The energy stored is  

         E =  0.5 *  CV^2

substituting values

         E =  0.5 *  (4.25 *10^{-7} * 12^2)

           E = 2.55*10^{-6} \ J

7 0
3 years ago
18. A net force of 1.0N acts on a 4.0-kg object, initially at rest, for 4.0 seconds. What is the distance the object moves durin
hjlf
Acceleration = force/mass
1/4
s=ut+1/2at^2
0*4+1/2*1/4*4^2
1/2*1/4*16
1/2*4
=2
6 0
4 years ago
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A tank is 10 m long, 6 m wide, 3 m high, and contains kerosene with density 820 kg/m3 to a depth of 2.5 m. (Use 9.8 m/s2 for the
Valentin [98]

Answer:

Explanation:

a )

Pressure on the bottom

= hdg

= 2.5 x 820 x 9.8

= 20090 N / m²

b )

force = area x pressure

= 20090 x 10 x 6 N

= 1205400 N

c )

Force on 10m x 2.5 m face

center of gravity of the tank will lie at height 2 .5 / 2 = 1.25 m

Pressure = hdg

= 1.25 x 820 x 9.8

= 10045 N/m²

force = pressure x area

= 10045  x 10 x 2.5

= 251125 N .

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3 years ago
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Which is the best explanation of how the Moon formed?
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