When discussing engines What is the ratio of output?
When discussing engines, the ratio of output work to input work expressed as a percentage is called . Efficiency η is the ratio of input work over the output work. It is defined as: η=work done/heat absorbed=(Q₂-Q₁)/Q₁where Q₁ is the heat absorbed and Q₂-Q₁ is the work done.
What is the SI unit for work What does it represent?
The SI unit of work is the joule (J), named after the 19th-century English physicist James Prescott Joule, which is defined as the work required to exert a force of one newton through a displacement of one metre.
How do you find time with mass and height?
The calculator uses the standard formula from Newtonian physics to figure out how long before the falling object goes splat:
- The force of gravity, g = 9.8 m/s2
- Time to splat: sqrt ( 2 * height / 9.8 )
- Velocity at splat time: sqrt( 2 * g * height )
- Energy at splat time: 1/2 * mass * velocity2 = mass * g * height.
What is the formula of height?
The stick and its shadow make a triangle similar to the height of the object of interest and the length of its shadow. So, “H/S = h/s.” For example, if s=1 meter, h=0.5 meter and S=20 meters, then H=10 meters, the height of the object.
Is age and height a function?
Is age a function of height? However, age is not a function of height, since one height input might correspond with more than one output age. For example, for an input height of 70 inches, there is more than one output of age since I was 70 inches at the age of 20 and 21.
Is a persons weight a function of their height?
No, height is not a function of weight, because two students weigh 165 pouncs (input) but have different heights (output).
Is a person’s weight a function of their height?
d) Weight is a function of height, where height is the input value and weight is the corresponding output value. Moreover, there is one and only one output value is assigned for each input value.
What is relation between height and weight?
Weight gain increases with increasing height. Overall there is a negative correlation between BMI and weight gain. However, women with the same BMI but different body weights and heights can differ significantly with regard to their weight gain.
What is the average relationship between height and weight?
From the simple regression equations of weight on height, it is found that the both for male and female students the effect of height on weight is almost same. It is also found that the effect of height on weight both for male and female students is highly significant (p-value<0.01).
What is the formula of weight and height?
Body Mass Index is a simple calculation using a person’s height and weight. The formula is BMI = kg/m2 where kg is a person’s weight in kilograms and m2 is their height in metres squared. A BMI of 25.0 or more is overweight, while the healthy range is 18.5 to 24.9. BMI applies to most adults 18-65 years.
What is my ideal weight for my height and age?
Weight and height guide chart
| Height | Weight | |
|---|---|---|
| 5ft 4″ (64″) | 110 to 140 lbs. | 145 to 169 lbs. |
| 5ft 5″ (65″) | 114 to 144 lbs. | 150 to 174 lbs. |
| 5ft 6″ (66″) | 118 to 148 lbs. | 155 to 179 lbs. |
| 5ft 7″ (67″) | 121 to 153 lbs. | 159 to 185 lbs. |