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marishachu [46]
4 years ago
7

Will was riding his bike when a dog ran out in front of him. he slammed on his brakes. during this quick stop, some of the mecha

nical energy (his motion) was changed into
Chemistry
2 answers:
Kruka [31]4 years ago
8 0

Answer: Heat energy

Explanation:

riadik2000 [5.3K]4 years ago
3 0

Answer is: heat energy.

Braking is the process of controlling the velocity of an object (in this example bicycle) by inhibiting its motion.

Mechanical energy can be either kinetic or potential energy and has to do with the energy of position and motion of an object.

Kinetic energy is energy of the speed of an object and how much mass it has; basically how the object is moving.

Potential energy is type of energy is stored energy; it can be increased by getting into a higher position and/or stretching an object such as a rubber band.

A mechanical brake applies a friction force to convert the kinetic energy of the bicycle into heat energy which then dissipates into the atmosphere.

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Match each scientist with thr contribution he made to the arrangement of the elements in the periodic table​
Bas_tet [7]

Answer:

Dmitri Mendeleev

used patterns to predict undiscovered

elements

Johann Wolfgang Dobereiner

created groups of three elements,

each based on similar properties

John Newlands

arranged elements according to their

atomic mass

Antoine Lavoisier,

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5 0
3 years ago
A reaction that involves reagent X as the limiting reagent is begun with an initial concentration of 0.732-M X. The reaction rea
katovenus [111]

Answer:

The answer to the question is 0.0122 m/s

Explanation:

The rate of a reaction is the measure of the change in concentration of a reagent within a specific time frame. Reaction rate of a substance can be calculated by finding the division of the concentration change of the substance and the time required to undergo the change in concentration.

Average reaction rate \frac{Change in the moles count of X}{Change in time} =

The initial number of moles of X = 0.732 moles and final number of moles of X  = 0 moles and the time it took to effect the change = 60s

then the rate of reaction = \frac{0.732}{60} = 0. 0122 moles per second

the rate of the reaction involving X = 0.0122 m/s

7 0
4 years ago
Scientists have found a large crater, containing minerals not common on Earth. Radioactive dating has determined that the crater
Paraphin [41]

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8 0
3 years ago
Calculate the molar mass of adrenaline (C9H13NO3C9H13NO3), a hormone responsible for regulating heart rate and other functions o
Talja [164]

Answer:

M_{C_9H_{13}NO_3}=183.23g/mol

Explanation:

Hello!

In this case, since the molar mass of a chemical compound is computed by averaging the atomic mass of each element in the molecule and the amount of atoms; which in this case there are 9 carbon atoms, 13 hydrogen atoms, 1 nitrogen atom and 3 oxygen atoms; thus, we compute the average as shown below:

M_{C_9H_{13}NO_3}=m_C*9+m_H*13+m_N+m_O*3

Now, we plug in the atomic masses to obtain:

M_{C_9H_{13}NO_3}=12.01*9+1.01*13+14.01+16.00*3\\\\M_{C_9H_{13}NO_3}=183.23g/mol

Best regards!

6 0
4 years ago
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