jezjoannah

Suppose that the demand function for good x is given by x = 10 - 2p_x + p_y + 0.5M, where M=10 is income and p_x = 2 and p_y = 5.

(a) Calculate the own price elasticity of demand.

(b) Calculate the cross price elasticity of demand. Are the goods substitutes or complements?

(c) Is the good normal or inferior? Calculate the income elasticity of demand.

(d) Is the good a necessity or a luxury?

 Suppose the generic demand function of a hypothetical good is given by:

 Qd = 250 + 0.75Y- 0.35P + 0.25Py + 500, where Y is income, Py is price of the related good and P is price of the good .Y =1500. P=3, Py =2 then

 A. Find quantity of demand

 B. Calculate price elasticity of demand and interpret your result

 C. Calculate income elasticity of demand and identify the types of goods.

 D. Calculate cross price elasticity of demand and identify the nature of the good

A ball with a diameter 10 cm rolls without slipping on ahorizontal table top. The moment of inertia of the ball is2.2*10^-3 kg m² and it's transitional speed is0.45 m/s.

a)What is its angular speed about it's center of mass?

b)What is its rotational kinetic energy?

c)What is its angular momentum?

 An HCl molecule is excited to its first rotational energy level, corresponding to  J = 1. If the distance between its nuclei is ro = 0.1275 nm, what is the angular speed of the molecule about its center of mass?

What is the reaction force in a beam if three forces affect it  F1= 500 N , F2= 300N , F3= 1000 N ?

the questions are a,b,c and d

 

b) Determine the limiting reagent. (5 marks)

 

c) Determine the mass of produced (theoretical yield). (2 marks)

 

m = n x M M

 

d) If the actual yield of was 22.3 g, determine the percent yield. (2 marks)

The field unit weight of soil is 16 kN   per cubic meters. If the water content is 13% and specific gravity of soil is 2.5, determine the following:

a.) Dry Unit Weight
b.) Void Ratio
c.) Degree of Saturation

Carefully expain why a typical demand curve slops downwards

A rough inclined plane, rises 1cm for every 5 cm along the inclined length. Calculate the effort required to drag a body weighing 100N up the plane, when the effort is applied parallel to the plane (µ=0.25)

A uniform bar of weight 30 N and length 4m passes over a prop and is supported in a horizontal position by a force of 10 N acting vertically upwards at the other end. Find the distance of the prop from the center of the bars.

4. Create a simple plan that shows how many calories you should consume to maintain your ideal weight.