What is the weight on Earth of an apple with mass 150g?
Answers
Gravitational Force = 1.47 N
Acceleration produced in Apple = 9.8 m/s^2
Acceleration produced in Earth = 2.45 x 10^(-23) m/s^2
Explanation:
Mass of Apple = 150 g = 0.15 Kg
Mass of Earth = 6 x 10^24 Kg
Radius of Earth = 6.38 x 10^6 m
Universal Gravitational Constant G = 6.67 x 10^-11 Nm^2/kg^2
Force due to gravity = G (mass of apple) (mass of earth) / (radius of earth)^2
We know that G (mass of earth) / (radius of earth)^2 = g = 9.8 m/s^2
So F = 9.8 (mass of apple) = 1.47 N
Gravitational Force = 1.47 N
By 2nd law of motion F = ma, a = F/m
Acceleration produced in Apple = F / (mass of apple) = 1.47 N / 0.15 Kg = 9.8 m/s^2
Acceleration produced in Earth = F / (mass of earth) = 1.47 N / 6 x 10^24 Kg = 2.45 x 10^(-23) m/s^2
Gravitational field strength= 10N/kg
150/1000= 0.15kg
0.15kg x 10= 1.5N
(Weight is measured in Newton’s)
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The is Answer is air
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A. The isotope that forms from the radioactive decay of a less stable isotope
Explanation:
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They are composed by two or more pure substances.
Explanation:
Hello,
At first, we must take into account that mixtures are such materials made up of two or mire pure substances, say elements, molecules or compounds. They are classified as homogeneous for which there is no appreciable difference upon its constituents and as heterogeneous for which the constituents are differentiable. Now, stainless steel is considered as a mixture as long as it is mainly composed by iron and carbon and some other metallic elements such as chromium. Sea water is another interesting example, since the main constituents are water and sodium chloride, nonetheless, other ions such as iodide, sulfate, magnesium (II), potassium (I), calcium (II) are also found into it. Finally, the air is a mixture due to the presence of oxygen and nitrogen as the major constituents, considering others such as carbon dioxide, methane (pollution), argon, hydrogen as traces, it means, compositions below the 1%.
Best regards.
Think of a homogeneous mixture similar to salt water. Homogeneous mixtures have a fixed, or uniform composition. This means that each part of the mixture has the same properties. Every part of the sample is identical to the next. The same thing would happen with steel and bronze, they too are uniform throughout.
Answers
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This question is incomplete but the completed question is below
What is used up in and stops a chemical reaction? (a) percent yield (b) limiting reactant (c) theoretical yield (d) excess reactant
The correct option is (b)
Explanation:
A chemical reaction is a chemical combination,rearrangement or disintegration of chemical substance(s) (called reactants) to form new chemical substance(s) (called products).
A limiting reactant is the reactant that is totally used up during the course of a reaction. When this reactant is used up, it limits the amount of products formed and eventually stops the chemical reaction.
Hi
The chemical reaction does not stop until the reagent is used .
I hope that's help !
Why can't we change the subscripts in balancing chemical equations?
Answers
Answers
Answer:
The answer is B. Only synthesis.
Explanation:
Synthesis reactions are those in which two substances combine, giving rise to new substances. Breakdown of chemical bonds in reagents and formation of other bonds occurs, giving rise to new species.
A combustion is any reaction created between the combustible material and the oxidizer. Oxygen has the ability to combine with various elements to produce oxides. There are oxidations that are extremely slow, but when it is fast it is called combustion. That is why the oxidizer is oxygen, and the fuel is usually hydrocarbons (organic compounds made up of only carbon and hydrogen atoms). These usually go into combustion with ease.
In this case it is a synthesis, where two reagents, and
, are combined to form a product,
. It is not a combustion because despite having
there is no hydrocarbon.
So the answer is
A. Both synthesis and combustion.