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tia_tia [17]
3 years ago
12

Describe the conversions from potential to kinetic energy, or kinetic to potential energy, as a toy car rolls down a ramp.

Chemistry
1 answer:
DiKsa [7]3 years ago
4 0

Answer:

When an object falls, its gravitational potential energy is changed to kinetic energy. You can use this relationship to calculate the speed of the object's descent. Gravitational potential energy for a mass m at height h near the surface of the Earth is mgh more than the potential energy would be at height 0.

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What is the name for a star that has two shells of hydrogen and helium undergoing fusion?
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Answer:

I am not so sure but I think it is A.

Explanation:

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6 0
3 years ago
Particles of matter are in motion in
inessss [21]

Answer:

liquid and gases

Explanation:

3 0
3 years ago
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Write the name for CH2.
finlep [7]

Answer:

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Nitric oxide can be oxidized in air to form nitrogen dioxide. At normal atmospheric concentrations this is a very slow process.
lawyer [7]

Answer:

exothermic

Explanation:

This is an exothermic reaction because you can see the 232.4 kJ at the end of the reaction. That means that 232.4 kilo-joules are released when the reaction happens; when energy is released during a reaction, the reaction is exothermic.

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6 0
4 years ago
Find Ecell for an electrochemical cell based on the following reaction with [MnO4−]=1.20M, [H+]=1.50M, and [Ag+]=0.0100M. E∘cell
bagirrra123 [75]

Answer:

1.01 V

Explanation:

From Nernst equation;

Ecell= E°cell- 0.0592/n log Q

Where;

Ecell= observed emf of the cell

E°cell= standard emf of the cell

n= number of moles of electrons transferred

Q= reaction quotient

Q= [Ag^+]^3/[MnO4^-] [H^+]^4

Q= [0.01]^3/[1.20] [1.50]^4

Q= 1.65×10^-7

Ecell= 0.88 - 0.0592/3 log 1.65×10^-7

Ecell= 0.88 - [0.0197×(-6.78)]

Ecell= 0.88 + 0.134

Ecell= 1.01 V

5 0
3 years ago
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