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Statics
Statics is the branch of mechanics that describes bodies which are acted upon by balanced forces and torques so that they remain at rest or in uniform motion. In statics, the bodies being studied are in equilibrium.
434 Questions
Such a question is a philosophical one. Science is a matter of how things work. If a why question is answered, it is only secondary to a how.
Are there Deaths from alligators in the Tennessee River?
Im sure there has been! May not have been reported,or known about,but it is very likely.There have been sharks that swam in our rivers,and killed people.So anything is possible!
What percent of teens wait till last minute to do their homework?
There are no studies on this but kids are not mature yet and many of them don't know how to set time deadlines for themselves - that's part of what you learn when you do homework.
Derivation for parallelogram law of forces?
The parallelogram law of forces says that the sum of two forces is equivalent to the parallelogram formed by placing the first vector as starting from the origin and the second starting from the head of the first. This can be proven through trigonometric derivation of triangle angles and sides.
What is the difference between static friction coefficient and kinetic friction coefficient?
Coefficient of friction is drag. It is what keeps your feet from sliding on the floor like on ice. Inertia doesn't even have to be touching anything. In outer space anything with mass would remain still or in motion if not acted on by an outside force.
4d as in four dimensions have never actually been made.
It is always present. Have always been present. Will always be present.
Three dimensions we consider on a day to day basis is length, width and debth.
Knowing these variables makes it possible to calculate positions in space.
By adding a fourth dimension (time) we can calculate motion in space.
As motion has always been present and will always be present, we can not say that somebody has invented or made this.
What are the reasons for increased life expectancy?
Numerous factors, including better nutrition, better prenatal care, improved medicines, and advanced in technology that allow earlier detection and treatment of formerly fatal health problems.
LOTS OF NEW DRUGS..BUT MOST OF ALL, I THINK IT IS THE PRESERVATIVES IN OUR FOOD.
AnswerThe primary reason for the vast increase in life expectancy in developed countries in the 20th century is universal clean drinking water and very high levels of public and person hygiene. These two improvements account for probably 80% of the life expectancy improvements. Overall, life expectancy has increased due to 6 major factors (from most to least importance):- Clean drinking water
- Universal sanitation
- Significantly improved nutrition, particularly during infancy and childhood
- Vaccination against most common epidemic diseases
- Access to high-quality trauma (accident and emergency) care
- Improved drugs (particularly, antibiotics)
According to UNICEF, the majority of child deaths (70% in developing countries) are a result of these 5 main causes:
- acute respiratory infections
- diarrhea
- measles
- malaria
- malnutrition
In the 20th century, the massive reduction in infant and childhood deaths due to infectious diseases is the primary driver of increased average life expectancy in the developing world. Universal vaccination is the main contributor to this drastic drop, with several enormous killer diseases now either wiped out or radically reduced:
- Smallpox
- Polio
- Measles
- Whooping Cough
- Tuberculosis
In conjunction with vaccines, clean drinking water programs (which usually includes sanitation improvement) are responsible for the largest decrease in death at all ages. That is, improving access to clean drinking water will reduce death rates at all age brackets radically, since it significantly reduces congagious disease transmission.
In the developing world, vaccines, clean drinking water, and improved sanitation account for virtually ALL of the increase in life expectancy.
Application of parallelogram law of forces?
The parallelogram law of forces can be applied to any situation where multiple forces are acting on an object. The launching of a stunt person from a cannon in a circus is a prime example. To achieve a certain angle of launch with a certain velocity, an initial velocity must be applied to the person, but countering that is the force of gravity. So, the initial velocity is one leg of the parallelogram and the other leg is the force of gravity.
Sikhism is followed by people who agree with the beliefs of Sikhism as well as to help them become a better person.
What objects are of neutral bouyancy?
The question makes no sense. Objects are buoyant in a surrounding fluid; change the fluid, change their buoyancy.
Is there anything lighter than air?
yes, anything with a lower atomic number would be lighter, for example, helium is lighter than air, which is why balloons float when filled with helium... the lighter substance rises above the heavier....
What is the advantage of strain energy method in structure analysis compared with other methods?
· Powerful way of approaching problems in linear elasticity.
· Can be used to derive the governing equations and boundary conditions for special classes of problems.
· Used as the basis of approximate solutions of elasticity problem, e.g., finite element method.
It Can be used to obtain rigorous bounds on the stiffness of elastic structures/solids
How can you increase Mechanical Advantage of Pulley Up to 30 or more using less than 11 pulleys?
connect the rope/line to a fixed axle and have a large lever turning this. Distance traveled by effort will be greatly increased. Your pulley system is most likely over 50% efficient so your load will overhaul unless a brake is used to keep the line from running backwards
What Lorentz force and its application?
The Lorentz force, in electromagnetism, is the effect of electric and magnetic forces which act on a point charge moving through electric and magnetic fields.
The Lorentz force can be found in scientific apparatus such as particle accelerators, mass spectrometers and magnetrons. More day-to-day equipment are electric motors, loudspeakers and electrical generators.
The pressure will be the sum of pressures of oil and water:
p = rowater g hwater + rooil g hoil
Specific gravity of 0.8 of oil means it's 0.8 times as dense as water:
rooil = 0.8 rowater
Pressure will be then:
p = g (rowater hwater + 0.8 rowater hoil), or numerically:
p = 4355.64 Pa
Skewness is a measure of symmetry, or more precisely, the lack of symmetry. A distribution, or data set, is symmetric if it looks the same to the left and right of the center point.
The Shape of a Histogram
A histogram is unimodal if there is one hump, bimodal if there are two humps and multimodal if there are many humps. A nonsymmetric histogram is called skewed if it is not symmetric. If the upper tail is longer than the lower tail then it is positively skewed. If the upper tail is shorter than it is negatively skewed.
Unimodal, Symmetric, Nonskewed
Nonsymmetric, Skewed Right
Bimodal
What is SBR no or in sss form?
You'll find more information about SSS online registration on this link. Download the PDF file and read the SBR section.
https://www.sss.gov.ph/sss/downloads/SSSWebRegFAQ.pdf
How do you convert an impact value of 300 Joules into a static force?
Measure (or guess) what the distance , OR the time is in which the falling object (assuming that is the source of energy) will come to a rest.
Then use the equation Energy = Force x Distance
to calculate the average force during the impact. In real life the force wil not decrease linearly, depending on a lot of factors.
How does Mugenda and Mugenda define sample size?
According to research made at multiple websites; Mugenda and Mugenda, which is a company that focuses on research methods for various areas, define sample size by using statistics data and probability.
If the density of the solid body is greater than the density of the liquid the body
will sink. If the density of the liquid is greater than the density of the solid the
body will float.
If the solid and the liquid have the same density, the solid body can be any where
inside the liquid and may move following currents if they exist in the liquid.
Advantages and disadvantages of using arithmetic mean?
"The advantage is that the mean takes every value into account. A disadvantage is that it can be affected by extreme values. "
The mean or more properly the "arithmetic mean" of a sample will eventually approximate the mean of the distribution of the population as the sample size increases. If the population distribution is skewed (not symmetrical), the mode and median will not provide an estimate of the mean, even as the sample size becomes large.
