Answer:
im trying to do a challenge because this kid deleted all my answers
Explanation:
Answer and Explanation:
There are different characteristics for the material of friction surfaces that are given bellow.
- The coefficient of friction of the material of friction surface should be very high.
- Coefficient of friction throughout the surface should be uniform.
- The material should have impacted by moisture and oil
- Material should have great ability to bear high temperature
- Material should have high resistance and high heat of conductivity
Answer:
The solution code is given below
- using System;
- using System.Linq;
-
- public class Program
- {
- public static void Main()
- {
- string[] letters = {"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T","U", "V", "W", "X", "Y", "Z"};
-
- Console.WriteLine("Please input a letter: ");
- string input_letter = Console.ReadLine();
-
- if(letters.Contains(input_letter)){
- Console.WriteLine("OK");
- }else{
- Console.WriteLine("Error. Not uppercase letter.");
- }
- }
- }
Explanation:
Firstly we import the necessary libraries, System and Linq (Line 1-2).
Next we create a string array to hold all uppercase letters (Line 8).
Next, we prompt user to input a letter using the ReadLine() method (Line 10 - 11)
At last, we define if and else conditions to check if the letters contains the input letter. If so, print ok else print an error message. (Line 13-17)
Complete question is;
Lucy works for a company that manufactures liquid dyes for fabric. She currently wants to mix up some 23%-concentrated teal dye. She has 16 gallons of 15%-concentrated teal dye, as well as plenty of 25%-concentrated teal dye. How many gallons of the 25%-concentrated teal dye will Lucy need to add to the 15%-concentrated teal dye to make a batch with a concentration of 23%?
Answer:
64 gallons
Explanation:
We are given;
Quantity of 15%-concentrated teal dye = 16 gallons
Let the number of gallons of 25%-concentrated teal dye needed to add to make the batch with a concentration of 23% be represented as x.
Thus;
(15% × 16) + (25%)x = 23%(16 + x)
Multiply each term by 100 to give;
(15 × 16) + 25x = 23(16 + x)
240 + 25x = 368 + 23x
Rearranging, we have;
25x - 23x = 368 - 240
2x = 128
x = 128/2
x = 64
C smaller than that of the larger-diameter cylinder