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SI unit is an international system of measurements that are used universally in technical and scientific research to avoid the confusion with the units. Having a standard unit system is important because it helps the entire world to understand the measurements in one set of unit system. Following is the table with base SI units:
<th>| 1. | Length (l) | Meter | m |
| 2. | Mass (M) | Kilogram | kg |
| 3. | Time (T) | Second | s |
| 4. | Electric current (I) | Ampere | A |
| 5. | Thermodynamic temperature (Θ) | Kelvin | K |
| 6. | Amount of substance (N) | Mole | mol |
| 7. | Luminous intensity (J) | Candela | cd |
Posted by Suresh Kumar 4 years, 5 months ago
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Sia ? 4 years, 5 months ago
The molar volume, symbol Vm, or of a substance is the occupied volume divided by the amount of substance at a given temperature and pressure. It is equal to the molar mass (M) divided by the mass density (ρ).
Actual Volume means the total amount in MW (recorded to one (1) decimal point) that is being consumed, or is being consumed as an aggregated volume, by the Service Provider that is subject to LSSi at any point in time.
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The differentiation of a function f(x) is represented as f'(x). If f(x) = y, then f'(x) = dy/dx, which means y is differentiated with respect to x. Before we start solving some questions based on differentiation, let us see the general differentiation formulas used here. Function f(x) = y.
Differentiate x5 with respect to x.
Solution: Given, y = x5
On differentiating w.r.t we get;
dy/dx = d(x5)/dx
y’ = 5x5-1 = 5x4
Therefore, d(x5)/dx = 5x4
Posted by Ayushi Kandpal 4 years, 5 months ago
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Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines.
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In a cyclic process, the system starts and returns to the same thermodynamic state.
The net work involved is the enclosed area on the P-V diagram. If the cycle goes clockwise, the system does work. A cyclic process is the underlying principle for an engine.
If the cycle goes counterclockwise, work is done on the system every cycle. An example of such a system is a refrigerator or air conditioner.
Example of a Cyclic Process
Expansion at constant temperature (T1).
Removal of heat at constant volume (V2).
Compression at constant temperature (T2).
Addition of heat at constant volume (V1).
We'll show that this process does work. Because the process is cyclic, there is no change in internal energy after each cycle. Therefore the net work done in each cycle equals the heat added to the system. We now analyze each of the steps in the cycle.
Step 1 - Isothermal expansion: The system does work W1 which equals the heat Q1added to the system in the expansion, because the internal energy does not change.
Step 2 - Isochoric process: The work done is W2 = 0. Heat Q2 is removed from the system because the temperature decreases from T1 to T2.
Step 3 - Isothermal compression: The work W3 done by the system is negative, but of smaller magnitude than W1 because the area under the PV curve is less than that in step 1. The internal energy is does not change, so the heat removed is Q3 = W3.
Step 4 - Isochoric process: The reverse of step 2. W4 = 0, while heat Q4 = - Q2 is added to the system.
Cycle Summary
Because W2 and W4 = 0, the net work done is Wnet = W1 + W3
Because Q2 + Q4 =0, the net heat added is Qnet = Q1 + Q3 = Wnet
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Newton’s first law of motion states that “A body at rest or uniform motion will continue to be at rest or uniform motion until and unless a net external force acts on it”. Suppose a block is kept on the floor, it will remain at rest until we apply some external force to it. Also, we know that it takes us more effort or force to move a heavy mass. This is directly related to a property known as Inertia. This law is also known as the law of inertia.
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