Momentum is defined as
P = m*v
where m is the mass of the object
and v is the speed of the object
We find m.............> m = P/v = 120 [kg.m/s] / 2.4 [m/s] = 50 kg
The mass is 50 kg
physics
:p
Mechanical energy is commonly referred to as "the ability to do work." This is a somewhat inaccurate (though still useful) idea of it, as I'll describe.
Mechanical energy is the sum of kinetic energy (energy associated with motion) and potential energy (energy associated with position). Technically speaking, heat energy (the most common example of non-mechanical energy) is small-scale kinetic energy, but for macroscopic systems, this energy is not mechanical. Although it has the ability to do work, it is small-scale and thus not considered "mechanical."
As far as how mechanical energy is transformed into nonmechanical energy, let me provide a couple of examples:
One is the classic example of friction. When two surfaces rub together, they generate thermal energy, or heat. This is a transformation of the mechanical kinetic energy of the objects into the thermal non-mechanical energy (which is small-scale kinetic energy). This is the primary reason why there are no perfect machines--some energy is always lost as heat due to friction.
Another example is a small electric generator. Rotating a small circuit in a magnetic field will induce a voltage and generate electrical non-mechanical energy. This is a transformation of the kinetic energy associated with the rotation into electrical energy.
The primary difference between mechanical energy and non-mechanical energy is the scope. Mechanical energy is generally associated with macroscopic objects (like water wheels), while non-mechanical energy is generally on the sub-microscopic scale (the kinetic energy of individual atoms). Both can do work, though working with mechanical energy is generally more helpful than trying to work with non-mechanical energy.
Fission reaction is given
¹₀n + ²³⁵₉₂U → ⁹⁸₄₀Zr + ¹³⁵₅₂Te +3(¹₀n)
The atomic masses of the fission products are 97.912735 u for ⁹⁸₄₀Zr and 134.916450 u for ¹³⁵₅₂Te. Hence, the energy released in fission reaction is 191.715 MeV.
How to find the energy released in the given fission reaction?
We know, that the atomic mass of the elements are as follows:
- ²³⁵₉₂U - 235.0483923u
- n = 1.008665u
In order to find the mass difference, we will calculate the initial mass and the mass of products.
The equation for the reaction:
n + ²³⁵₉₂U → ⁹⁸₄₀Zr + ¹³⁵₅₂Te +3n
Mass of initial reagents is 1.008665u + 235.0483923u = 233.052588u
Product of the reagents is 97.9120u + 134.9087u + 3(1.008665u) = 235.846773u
Now, using the formula of
Hence, the energy released in fission reaction is 191.715 MeV.
To learn more about fission reactor, refer to:
brainly.com/question/23276812
#SPJ4
Answer:
Choice A.
Nearness to a body of water causes an increase in humidity, due to the higher rate of evaporation.
