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tekilochka [14]
3 years ago
14

Hii please help i’ll give brainliest if you give a correct answer please

Physics
1 answer:
shusha [124]3 years ago
3 0

Answer:

D I think

Explanation:

Im just guessing dont trust 100%

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Assume that both the supply of and the demand for a good are relatively price elastic. The imposition of a per-unit excise tax o
sergey [27]

Answer:P:Increase Q:Decrease

Explanation: The price of the product will increase as the imposed per-unit excise tax on the sale of the good. This is true for both Perfectly-elastic and relatively elastic products.

The quantity demanded of the product will decrease as the price of the product increases, this his is true for both Perfectly-elastic and relatively elastic products. It will follow the law of Demand and Supply.

5 0
4 years ago
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The same net force is applied to two bodies. The first body acquires half of the acceleration of the second body. What is the re
Yanka [14]

The mass of the first body is double the mass of the second body.

This all revolves around Newtons 2nd law of motion that states F=m*a.

If we understand that body one has the same force applied but half of the acceleration than body two, we can easily understand that it has to do something with the objects mass. This is because mass and acceleration in newtons 2nd law are inversely proportional. This means if and objects force stays the same, but it’s mass doubles, then the acceleration must be half its original value. And if the acceleration doubles and the force stays constant than the mass must have halved from its original value. It sounds quite complicated but it’s very simple. Hopefully this helps!!!

4 0
3 years ago
A small sphere of reference-grade iron with a specific heat of 447 J/kg K and a mass of 0.515 kg is suddenly immersed in a water
elena-14-01-66 [18.8K]

Answer:

The specific heat of the unknown material is 131.750 joules per kilogram-degree Celsius.

Explanation:

Let suppose that sphere is cooled down at steady state, then we can estimate the rate of heat transfer (\dot Q), measured in watts, that is, joules per second, by the following formula:

\dot Q = m\cdot c\cdot \frac{T_{f}-T_{o}}{\Delta t} (1)

Where:

m - Mass of the sphere, measured in kilograms.

c - Specific heat of the material, measured in joules per kilogram-degree Celsius.

T_{o}, T_{f} - Initial and final temperatures of the sphere, measured in degrees Celsius.

\Delta t - Time, measured in seconds.

In addition, we assume that both spheres experiment the same heat transfer rate, then we have the following identity:

\frac{m_{I}\cdot c_{I}}{\Delta t_{I}} = \frac{m_{X}\cdot c_{X}}{\Delta t_{X}} (2)

Where:

m_{I}, m_{X} - Masses of the iron and unknown spheres, measured in kilograms.

\Delta t_{I}, \Delta t_{X} - Times of the iron and unknown spheres, measured in seconds.

c_{I}, c_{X} - Specific heats of the iron and unknown materials, measured in joules per kilogram-degree Celsius.

c_{X} = \left(\frac{\Delta t_{X}}{\Delta t_{I}}\right)\cdot \left(\frac{m_{I}}{m_{X}} \right) \cdot c_{I}

If we know that \Delta t_{I} = 6.35\,s, \Delta t_{X} = 4.59\,s, m_{I} = 0.515\,kg, m_{X} = 1.263\,kg and c_{I} = 447\,\frac{J}{kg\cdot ^{\circ}C}, then the specific heat of the unknown material is:

c_{X} = \left(\frac{4.59\,s}{6.35\,s} \right)\cdot \left(\frac{0.515\,kg}{1.263\,kg} \right)\cdot \left(447\,\frac{J}{kg\cdot ^{\circ}C} \right)

c_{X} = 131.750\,\frac{J}{kg\cdot ^{\circ}C}

Then, the specific heat of the unknown material is 131.750 joules per kilogram-degree Celsius.

3 0
3 years ago
If it's 58F outside, what is the temperature in degrees Celsius?
4vir4ik [10]
14.4 degrees celcius
7 0
3 years ago
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Q is granite, an igneous rock. Which of these is NOT a characteristic of igneous rock?
fgiga [73]

Igneous rocks are conglomerates, predominantly composed of rounded

gravel

Explanation:

The statement that igneous rocks are conglomerate predominantly composed of rounded gravel is not correct. Igneous rocks are rocks formed from magma that cools and solidifies.

  • Conglomerates are sedimentary rocks that are made of rounded clasts in a matrix.
  • They differ from igneous rocks that crystallize from molten magma.
  • Sedimentary rocks are usually derived from the process of weathering, erosion, transportation and deposition on the earth surface.
  • Igneous rocks forms from crystallized magma which can be on the surface or deep within the crust.

Learn more:

Sedimentary rocks brainly.com/question/2740663

#learnwithBrainly

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