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Andre45 [30]
3 years ago
9

9. A 2 liter bottle of Coke weighs about 2 kilograms. If that bottle were combined with an equal amount of anti-Coke, how many J

oules of energy would be released (note that you get units Joules if you calculate the energy using units of kilograms and meters)
Physics
1 answer:
givi [52]3 years ago
3 0

Answer:

The amount of energy that would be released is equal to 4182 Joules.

Explanation:

Total amount of coke = 2 kg = 2000 g

1 calorie per gram is equal to 4.184 Joules of energy

4.184 J/gC*2000g = 8368 J

1 food calorie is roughly equal to 4186 J

8368 - 4186

Therefore, the amount of energy that would be released is equal to 4182 Joules.

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Which type of circuit has two or more branches for the current to flow through?
stiks02 [169]
Hello,

The answer is A. Parallel circuit. 

Unlike a series circuit, these circuits allow currents to flow through multiple branches. An open circuit is an electrical current that is not valid, therefore there will be no current flow. A combination circuit, I believe, <span>is a </span>circuit<span> that is a blend of series paths and parallel paths.

Faith xoxo</span>
3 0
3 years ago
An 8.5 g ice cube is placed into 255 g of water. Calculate the temperature change in the water upon the complete melting of the
andrew-mc [135]

Answer:

Change in temperature of water = 2.67 °C

Explanation:

Heat gained by ice = heat lost by water

Q₁  = Q₂............... Equation 1

Where Q₁ = Latent heat of ice, Q₂ = heat lost by water

Q₁ = lm₁.................... equation 2

Q₂ = cm₂ΔT ............... Equation 3

Substituting equation 2 and 3 into equation 1

lm₁ = cm₂ΔT............... Equation 4

Making ΔT the subject of formula in equation 4

ΔT = lm₁/cm₂............. Equation 5

Where ΔT = change in temperature of water, l = specific latent heat of ice, m₁ = mass of ice, c= specific heat capacity of water, m₂ = mass of water.

Given: m₁ = 8.5 g = 0.0085 kg, m₂ = 255 g = 0.255 kg.

Constant: l = 336000 J/kg, c = 4200 J/kg.K

Substituting these values into equation 5

ΔT = (336000×0.0085)/(0.255×4200)

ΔT = 2856/1071

ΔT = 2.67 °C

Change in temperature of water = 2.67 °C

3 0
3 years ago
Although the evidence is weak, there has been a concern in recent years over possible health effects from the magnetic fields ge
sergey [27]

Answer:

a

The magnetic field strength is  B = 2 \mu T

Explanation:

From the question we are told that

             The  length line   above the ground  is  R = 20m

              The current of the line is  I  = 200A

              The voltage of the line is V = 110kV

Generally magnetic field strength is mathematically represented as

              B = \frac{\mu_o I}{2 \pi R}

Where  \mu_0 is the permeability of free space  = 4\pi * 10^{-7} N/A^2

             B = \frac{(4\pi * 10^{-7} N/A^2) *200}{2 \pi *20}

                = (2.0*10^{-7})[\frac{200}{20} ]

               = 2*10^{-6}T

              = 2 \mu T

Earths magnetic field is approximately given as 50 \mu T

   So the percentage would be

                           = \frac{Magnetic \ Field \ Intensity \ Of  \ Line}{Earth's \ Magnetic \ Field} * 100

                          = \frac{2 \mu T }{50 \mu T } * 100

                          =4%            

         

           

             

               

7 0
3 years ago
V
Darina [25.2K]
Resolving vectors question. See diagram enclosed.

4 0
3 years ago
A watt is a unit of<br><br>light<br>power<br>force<br>motion<br>energy
Crazy boy [7]

The answer would be Power

3 0
3 years ago
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