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Feeds
A résolu
Magic is simple (for beginners)
Determine for a magic square of order n, the magic sum m. For example m=15 for a magic square of order 3.
13 jours il y a
A résolu
Return unique values without sorting
If the input vector A is [42 1 1], the output value B must be the unique values [42 1] The values of B are in the same order a...
13 jours il y a
A résolu
sum of non-primes
The sum of the non-primes no larger than 10 is 1+4+6+8+9+10=38 Find the sum of all the positive non-prime integers that do no...
13 jours il y a
A résolu
Switch-Case-Otherwise
You should make random numbers to 10, by 3 rows and 3 columns. Cases from 1 to 3, b = true. Otherwise, b = false.
13 jours il y a
A résolu
AND
If a greater than 0 and n less than 10, b = true, else, b = false. (Checking a should be in one line by AND special sign in MAT...
13 jours il y a
A résolu
Nested If(s)
If a greater than zero, then check, if a = greater that 1 and less than 10, then b = true, else, b = false.
13 jours il y a
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If-Elseif-Else
If a more than zero, b = true, if a = zero , b = zero, else, b = false.
13 jours il y a
A résolu
Geometric Compression Ratio
The geometric compression ratio CR is the ratio of the total cylinder volume at BDC to the clearance volume at TDC. It is one ...
20 jours il y a
A résolu
Swept Volume and Clearance Volume
The swept volume (V_s) is the volume displaced by the piston as it travels from BDC (Bottom Dead Centre) to TDC (Top Dead Centre...
20 jours il y a
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Specific Fuel Consumption
Brake-specific fuel consumption (BSFC) measures how efficiently an engine converts fuel mass into useful work. Modern petrol e...
20 jours il y a
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Piston Mean Speed
Mean piston speed is a critical mechanical stress indicator. It sets limits on valve timing, bearing loads and material fatigue...
20 jours il y a
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Engine Displacement
Engine displacement is the total swept volume of all cylinders. It is determined by bore (cylinder diameter), stroke (piston t...
20 jours il y a
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Fuel-Air Equivalence Ratio (Lambda)
Lambda (λ) is the ratio of actual air-fuel ratio to the stoichiometric air-fuel ratio. λ = 1 is perfect stoichiometry, λ < 1...
20 jours il y a
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Volumetric efficiency
Volumetric efficiency measures how well an engine breathes. The ratio of the actual air mass drawn in per cycle to the theoreti...
20 jours il y a
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Engine torque and RPM
Torque and power are related through rotational speed. Knowing brake power and engine RPM, you can back-calculate the torque del...
20 jours il y a
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Engine Thermal Efficiency
The thermal efficiency of an ideal Otto cycle engine depends only on the compression ratio. A higher compression ratio yields gr...
20 jours il y a
A résolu
Basic Physics X
Calculate the Kinetic Energy (KE) by Weight (w), Distanec (d), and Time (t) without Mass (m) or Speed (v).
20 jours il y a
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Basic Physics IX
Calculate the Kinetic Energy (KE) by Weight (w) instead of Mass (m).
20 jours il y a
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Basic Physics VIII
Calculate the Mechanical Energy (ME) when the point is B.
20 jours il y a
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Basic Physics VI
Fing the Kinetic Energy (KE) by Distance (d) and Time (t) instead of Speed (v).
20 jours il y a
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Basic Physics I
Calculate the energy by the famous formula of Albert Einstein.
20 jours il y a
