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Elis [28]
3 years ago
15

PLEASE HELP I WILL GIVE A brainliest

Chemistry
2 answers:
max2010maxim [7]3 years ago
4 0

Answer:

Sitting at the bottom of the slide will have the most kinetic energy because all the potential energy is transferred to kinetic after he slides

Explanation:

Alexandra [31]3 years ago
4 0
D will be the right answer I think because kinetic energy is when in motion right
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What is needed for work to be done?
Shalnov [3]

Answer: A force must cause an object to move along the same direction as the force.

Explanation:

Work is defined as displacement in the position of an object due to action of force. Mathematically the work done is a product of force and displacement of an object. The direction of the force applied and direction in which object is displaced is always same.

Work=Force\times Displacement

When work is done,a force must cause an object to move along the same direction as the force.

6 0
2 years ago
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When c-14 transmutates into n-14, this represents 14 6 carbon becomes 14 7 nitrogen plus blank an alpha decay electron capture n
Evgesh-ka [11]
Answer is: <span>negative beta decay.
</span>
Nuclear reaction: ¹⁴C → ¹⁴N + e⁻ + νe (electron antineutrino).
<span>In beta minus decay (atomic number Z is increased by one, from 6 in carbon to 7 in nitrogen) neutron is converted to a proton and an electron and an electron antineutrino.
</span><span>Beta decay is radioactive decay in which a beta ray and a neutrino are emitted from an atomic nucleus.</span>

7 0
3 years ago
Please help with my chemistry homework! : Fuel burns in a car engine. Describe how oxides of nitrogen are produced in a car engi
Blizzard [7]

Answer:

Your statement is right.

Explanation:

When fuels are burned in vehicle engines, high temperatures are produced. At this high temperature, nitrogen and oxygen from the air combine with each other to produce nitrogen monoxide (NO). When this nitrogen monoxide is released in the air from vehicle exhaust systems, it combines with oxygen present in the air to form nitrogen dioxide (NO2).

4 0
3 years ago
What is the mass of 0.5 moles of carbon tetrafluoride, CF4?
VashaNatasha [74]

Answer:

44 g

Explanation:

The formula for the number of moles (n) is equal to n=\frac{mass}{molecular weight} .

Since we need to find the mass, we derive it from the formula of the number of moles and we get that mass = n x molecular weight .

The molecular weight of CF_{4} = 12 g/mol (from the carbon) + 19x4 g/mol (from the 4 fluorine atoms)= 88 g/mol

We plug in the numbers in the derived formula for the mass and we get :

mass = n x molecular weight = 0.5 mol x 88 g/mol = 44 g

4 0
2 years ago
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Coal and petroleum are useful because the both have ___ stored in them.
gizmo_the_mogwai [7]
I think the answer is 4 carbon dioxide
5 0
3 years ago
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