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Explain why a perfectly competitive firm will not shut down in the short run when making losses. Illustrate the answer with an appropriate diagram
Let 𝐴 and 𝐵 be two events. Suppose that the probability that neither event occurs is 3
8. What is the probability that at least one of the events occurs?
Let 𝐶 and 𝐷 be two events. Suppose 𝑃(𝐶) = 0.5, 𝑃(𝐶 ∩ 𝐷) = 0.2 and 𝑃((𝐶 ∪ 𝐷)′) = 0.4. What
is 𝑃(𝐷)?
Control Structures: As a build-up from the previous question, consider 3 possible scenarios of input: A character, number, or word. Your program should then do the following:
- In case the input is a character it should indicate if it’s a vowel or not
- when a number is entered then it’s should check if it’s a prime
- Finally, if a word is entered the system should check if it’s a palindrome or not.
Sample Run 1 Sample Run 3
Enter a character, number or word : c Enter a character, number or word : 7
Output 1 : C is not a vowel Output 3 : 7 is a prime number
Sample Run 2
Enter a character, number or word: programming
Output 2: Programming is not a palindrome
Read the following scenario and suggest measures that could be taken to improve the security of the computer system.
A Computer Science student has a summer job in the data processing department of a large supermarket.
One lunchtime he is left alone in the office which he shares with several other employees. He sits down at a colleague’s desk and finds that the PC is still logged on. He browses the menu and comes upon a menu to access the product database.
The submenu asks if he would like to Add, Delete, Update or View products. He selects Update and changes the price of several items that he wishes to purchase. Then he leaves the office and goes and makes his purchases, before returning and restoring the database to its original state. How could his actions be discovered?
find the vapor pressure of a solution containing 35.0g calcium chloride (CaCl2) in 750.0g water. Note that the Pwater= 47.1 torr at 37.0 C
if the velocity of a particle is defined by v = (2t + 1)i +3j fps, and is position vector at t = 1 sec is t = 4i+ 3j ft, determine the path of the particle in terms of its x and y coordinates.
Give a reason why it is much more useful to plot a graph of acceleration against the inverse of mass, than it is to plot a graph of acceleration against mass.
The letter-sound c takes on a k sound in the following combination of words …
1.
care, cat, coat, calendar, ceiling
2.
coke, cake, cut, cattle, corner
3.
cow, could, cent, cup, candy
4.
come, cab, can, city, celebrate
The magnetic flux density between the poles of a powerful electromagnetic force is 2.0 Tesla. A wire of length 2.0x10-²m. carrying a current of 4 ampere is placed in the given field. Calculate -
I. The maximum force on the wire.
II. Force when the wire meet at an angle of 45°
III. Force when the wire is parallel to the field.
the force on a charge moving with velocity (v) in a magnetic field (B) half of a maximum force.
Calculate the angle between V and B. F=qvB
#340153 on Dec 2023