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pickupchik [31]
4 years ago
5

Claire is investigating potential and kinetic energy using a large ball. For her investigation, Claire will stand at the top of

a hill and push the ball down the hill. The picture shows Claire's investigation
How will the ball's potential and kinetic energy change as it rolls down the hill?
Group of answer choices

The ball's potential energy will increase, and its kinetic energy will decrease.

The ball's potential energy will decrease, and its kinetic energy will increase.

The ball's potential and kinetic energy will both decrease.

The ball's potential and kinetic energy will both increase.

Chemistry
1 answer:
uranmaximum [27]4 years ago
3 0

The ball's potential energy will decrease, and its kinetic energy will increase.

Explanation:

The ball's potential energy will decrease down the slope and its kinetic energy will increase.

Kinetic energy is the energy due to the motion of a body.

 K. E = \frac{1}{2} m v²

 m is the mass of the ball

  v is the velocity of the ball.

Potential energy is the energy due to the motion of a body down slope.

It is expressed as:

   P.E = mgh

  m is the mass of ball

   g is the acceleration due to gravity of the body

  h is the height.

We can see as the body drops down the slope, the height diminishes and the velocity increases.

learn more:

Potential energy brainly.com/question/10770261

#learnwithBrainly

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Neon is compressed from 100 kPa and 16°C to 500 kPa in an isothermal compressor. Determine the change in the specific volume and
Viktor [21]

Answer:

\Delta v=-0.952m^3/kg

\Delta h=0

Explanation:

In this case, since neon could be considered as an ideal gas, the specific volumes at the first and second state are respectively:

v_1=\frac{Rg*T_1}{p_1}=\frac{0.4119kJ/kg*K*289.15}{100kPa} =1.19m^3/kg\\

v_2=\frac{Rg*T_2}{p_2}=\frac{0.4119kJ/kg*K*289.15}{500kPa} =0.238m^3/kg\\

Thus, the change in the specific volume turns out:

\Delta v=v_2-v_1=0.238m^3/kg-1.19m^3/kg\\\Delta v=-0.952m^3/kg

Which value has sense for the compression.

In addition, the specific enthalpy change just depend on the temperature as it is an ideal gas, therefore, since the process es isothermic:

\Delta h=Cp\Delta T=0

Best regards.

3 0
4 years ago
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Likurg_2 [28]

Answer:

B

Explanation:

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notka56 [123]

Answer:

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Explanation:

5 0
3 years ago
Given:
galina1969 [7]

Answer: 4.74 moles

Explanation:

2LiBr+Ba\rightarrow BaBr_2+2Li

Moles of Ba=\frac{\text {given mass}}{\text {molar mass}}

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Thus 2.37 moles of Barium gives=\frac{2}{1}\times 2.37=4.74 moles

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4 0
3 years ago
Read 2 more answers
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