Answer:
a) 53 MPa, 14.87 degree
b) 60.5 MPa
Average shear = -7.5 MPa
Explanation:
Given
A = 45
B = -60
C = 30
a) stress P1 = (A+B)/2 + Sqrt ({(A-B)/2}^2 + C)
Substituting the given values, we get -
P1 = (45-60)/2 + Sqrt ({(45-(-60))/2}^2 + 30)
P1 = 53 MPa
Likewise P2 = (A+B)/2 - Sqrt ({(A-B)/2}^2 + C)
Substituting the given values, we get -
P1 = (45-60)/2 - Sqrt ({(45-(-60))/2}^2 + 30)
P1 = -68 MPa
Tan 2a = C/{(A-B)/2}
Tan 2a = 30/(45+60)/2
a = 14.87 degree
Principal stress
p1 = (45+60)/2 + (45-60)/2 cos 2a + 30 sin2a = 53 MPa
b) Shear stress in plane
Sqrt ({(45-(-60))/2}^2 + 30) = 60.5 MPa
Average = (45-(-60))/2 = -7.5 MPa
So people can tell what your think
Answer:
Explanation:
In this case acceleration is defined as:
,
where k is a constant to be found.
To find the expressions for velocity and position as a function of time you must integrate the expression above for acceleration two times.
Initial conditions and boundary conditions are defined with the rest of the data as:
First integration is equal to:
The boundary condition and initial condition can be used to calculate and :
With this expression for velocity is defined as:
The same can be done to get to expression for position:
To get the total distance traveled you can integrate the velocity expression from time=0 sec to time=4 sec:
Answer:
Explanation:
The concept of amperes law is applied;
Given the current density vector in the medium is J,
the electric flux density vector is D,
and the magnetic flux density vector is B. The line integral of the magnetic field intensity H
considering the orientation of the contour is adopted according to ampere law;
deta x B = Jc + JD
delta x B = Jc + partial differential D/partial differential t
where Jc = conduction current density
JD = displacement current density
The search using the customer name, not the customer number is as follows
<u>Explanation:</u>
<u>Using JOIN
</u>
Apply the natural join on the customers, orders, the order items & the books table. Where the Customer table contains the details of the customer and the order , the order items table will contain details about order of the books given by the customer.
SELECT Title, Paid Each- AS Profit From CUSTOMERS natural join ORDERS natural join ORDERITEMS natural join BOOKS Where FirstName = 'Jake' AND Last Name = 'Lucas' Order BY Order Date, Profit;