Answer:
a)
b)
Explanation:
a)
In order to solve this problem, we need to start by remembering how the acceleration is related to the velocity of a particle. We have the following relation:
in other words, the acceleration is defined to be the derivative of the velocity function with respect to time. So let's take our speed function:
u=20-2x
if we take its derivative we get:
du=-2dx
this is the same as writting:
we also know that velocity is defined to be:
so we get that:
a=-2u
when substituting we get that:
a=-2(20-2x)
when expanding we get:
a=-40+4x
and now we can use this equation to find our acceleration at x=3, so:
a=-40+4(3)
a=-40+12
b)
the same applies to this problem with the difference that this will be the rate of change of the temperature per m. So we proceed and take the derivative of the temperature function:
T=200-5x
so the rate of change is
Answer:
An adaptation is the physical or behavioural characteristic of an organism that helps an organism to survive better in the surrounding environment.
In engineering im assuming that an adaptation would just be an improved tool of sorts
Answer:
(d) None. No provisions exist.
Explanation:
B&P Code § 6738 prohibits a non-licensed person from being the sole proprietor of an engineering business. The non-licensed can be a partner in an engineering business that offers civil, electrical, or mechanical services. It is mandatory that at least one licensed engineer must be a co-owner of the business.
Answer with Explanation:
In a tensile test in an tensile machine the following steps followed to obtain the young's modulus:
1) A specimen of material with known cross sectional area and gauge length is loaded axially.
2) The load is increased and the corresponding change in the gauge length of the material is noted by using a deflectometer or a dial gauge.
3) The ratio between Force applied and the nominal cross section known as stress is calculated for each applied value of force until the material fails.
4) The ratio between the change in gauge length and the original gauge length is found this ratio is known as strain.
5) A graph is plotted between the values calculated in step 3 and 4 above.
6) The slope of the line at the origin of the graph gives the young's modulus of the material.