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A standard hard water contains 15 gm of CaCO3 per lite. 20 ml of this required 25 ml of EDTA solution. 100ml of sample water required 18 ml EDTA solution. The same sample after boiling required 12 ml EDTA solution. Calculate the temporary hardness of the given sample of water, in terms of ppm
A car of mass 1050 kg accelerates uniformly at 2.4 ms-2 from an initial speed of 10 ms-1. It travels a distance of 540 m before it reaches its top speed.
a. Calculate its top speed.
b. The total resistive force on the car at its top speed is 3000 N. What is the power of the engine in Watts?
c. Given that 1 horsepower = 745.7 Watts, what is the horsepower rating of the car engine (to two significant figures)?
d. What is the kinetic energy of the car at its top speed?
e. Please calculate its momentum.
Need to figure out the ground reaction forces on a horse standing still, walking
The horse in question would be 500kg and what I need to is to determine the force on the front legs. The horse distribute their weight with 52% on the front legs and 48% on the back legs. Assuming the foot/hoof is circular with a diameter of 150mm. What force occurs on the front feet?
Standing still ? And walking, around 2m/s?
Thanks
The probability function of a discrete random variable X is as follows:
Values of X: x -4 -2 0 2 4
P(x) k 2k 3k 5k 6k
i) Find the value of k.
ii) Find the probability of the value of X exactly one.
iii) Find the probability of the value of X between -2 and 2.
iv) Estimate expected value and standard deviation of X.
Are ketones part in the acyl group?
A random of 200 school managers were administered a developed leadership skill test. The sample mean and standard deviation were 78 and 4.2 respectively. In the standardization of test, the mean was 73 and the standard deviation was 8. Test for significant difference using alpha = 0.05
Question 3: Suppose the inverse demand function for good X is given as P=100-2Q. Find
the price elasticity of demand when Q=40 units. What can you say about the type of the good
looking at the price elasticity of demand that you calculate in the first part?
name the psychologists involved in the experiments of photosynthesis
The satisfaction gained by consuming x units of good 1 and y units of good 2 is measured by the utility function
U = 2x2 + 5y3
Currently an individual consumes 20 units of good 1 and 8 units of good 2.
(a) Find the marginal utility of good 1 and hence estimate the increase in satisfaction gained from consuming one more unit of good 1.
(b) Find the marginal utility of good 2 and hence estimate the increase in satisfaction gained from consuming one more unit of good 2
A rectangular garden that is 3 m wide and 8 m long is to have a uniform border is the same as the area of the garden. Find the width of the border.
#339914 on Dec 2023