Hopefully that helps you out and is this for history or science?
A corroded metal gusset plate was found on a bridge. It was estimated that the original area of the plate was 750 cm2 and that a
1 answer:
Answer:
estimate the time since construction of the bridge is 6.66 year
Explanation:
given data
area of the plate = 750 cm²
corroded away during use = 2.5 kg
corrosion penetration rate = 0.5 mm/year
density of the alloy = 10 g/cm³
solution
we know here area is express as
CPR = ................1
put here value ans we get t
t =
t = 58400 hour
time = 6.66 year
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Answer:
maximum stress is 2872.28 MPa
Explanation:
given data
radius of curvature = 3 × mm
crack length = 5.5 × mm
tensile stress = 150 MPa
to find out
maximum stress
solution
we know that maximum stress formula that is express as
......................1
here σo is applied stress and a is half of internal crack and t is radius of curvature of tip of internal crack
so put here all value in equation 1 we get
σm = 2872.28 MPa
so maximum stress is 2872.28 MPa
Answer:
Explanation:
In electrical terms, is the ratio of time in which a load or circuit is ON compared to the time in which the load or circuit is OFF.
The duty cycle or power cycle, is expressed as a percentage of the activation time. For example, a 70% duty cycle is a signal that 70% of the time is activated and the other 30% disabled. Its equation can be expressed as:
Where:
Here is a picture that will help you understand these concepts.
