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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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1. Antoine Lavoisier, a French scientist, established which principle?
pickupchik [31]

Answer: The correct option is d.

Explanation: Antoine Lavoisier is a french scientist who discovered the role of oxygen in the process of combustion and respiration.

He was famous for the law of conservation of mass.

This law states that the total mass the reactant will equal to the total mass of the products in a chemical reaction.

For example: Combustion of methane

CH_4+2O_2\rightarrow CO_2+2H_2O

Mass of the reactants = [12+4(1)]+[2(32)]=80g/mol

Mass of the products = [12+2(16)]+2[2(1)+16]=80g/mol

Hence, every chemical reaction will follow law of conservation of mass.

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3 years ago
Charcoal is primarily carbon. what mass of co2 is produced if you burn enough carbon (in the form of charcoal) to produce 4.80 k
Reika [66]
When carbon is burned in air carbon iv oxide gas is formed.
C (s) + O2 (g) = CO2(g)  ΔH = - 393.5 kj/mol
The enthalpy change of the  reaction is -393.5 j/mol which means that when one mole of carbon is completely burnt in air then 393.5 j of energy is evolved.
Thus, 1 mole = -393.5 j , then for 480 kj 
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