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Calculate the equilibrium concentration of the nonionized acids and all ions in a solution is 0.25 m in HCO2H and 0.10m in HCIO.
A plate 60 mm wide and 12.5 mm thick is to be welded to another plate by means of parallel fillet welds. The plates are subjected to a load of 80 kN. Find the length of the weld. Assume allowable shear strength to be 60 MPa.
the mean weight of baggage of 25 passengers from usa bound for the philippines is 31.8 kilos with a variance of 16. test the claim that the population mean baggage weight is equal to 30 kilos at 0.01 level of significance. Assume that the population is normally distributed. The t value is 2.492
A scientist measures the standard enthalpy change for the following reaction to be -558.9 kJ :
H2CO(g) + O2(g)CO2(g) + H2O(l)
Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of H2CO(g) is
Critically discuss the principles of learning that could help you in designing and conducting your Economics education sessions
A cell has a terminal voltage of 50.0 V for a current of 10.0 A, and 54 V for a current of 6.0 A. Find the external resistance of each cell
A point charge has a charge of 9.00 x 10^-11C. At what distance from the point charge is the electrical potential (a) 13.0 V? (b) 25.0 V?
In a 24-hour endurance race, a car makes 640 laps of a race track that is 6 km per lap. How far did the car travel in 24 hours? What was its average speed?
Solve the standard type of first order partial differential equation
p(1+q) = qz
Consider an object projected straight upward from z=0 with an initial speed of u. Assume that the object is subjected to a linear drag force of the form D=-mKv
a)From the first principle show that t=1/K In(g+Ku/g+Kv) and use this result to find the time taken to reach the maximum height
b)Find the expression for the speed v as a function of time and find the limiting speed
#340153 on Dec 2023