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Consider an ordinary shower where hot water at 60°C is mixed with cold water at 10°C. If it is desired that a steady stream of warm water at 45°C be supplied, determine the ratio of the mass flow rates of the hot to cold water. Assume the heat losses from the mixing chamber to be negligible and the mixing to take place at a pressure of 150 kPa.
1. Consider an ordinary shower where hot water at 60°C is mixed with cold water at 10°C. If it is desired that a steady stream of warm water at 45°C be supplied, determine the ratio of the mass flow rates of the hot to cold water. Assume the heat losses from the mixing chamber to be negligible and the mixing to take place at a pressure of 150 kPa.
A lead pellet is propelled vertically upward by an air rifle with an initial speed of 50 ft/s. Find its maximum height ?
Final Project - TicTacToe Human vs. Computer 2 # 3 # Purpose: using a nested list structure to store a 3x3 grid of values 4 # simulate a childhood game of tic-tac-toe. The human player interacts 5 # with a full command line interface to select board positions.
Hemoglobin (g percent) values were recorded for a sample of 20 children who were part
of a study of acute leukemia. The variance of the observations was 5. Do these data
provide sufficient evidence to indicate that the population variance is greater than 4?
α=5
The manufacturer of a certain kind of light bulb claims that the lifetime of the bulb in hours, X can be modeled as a random quantity with PDF.
fX(x)=0,c/x^2
x< 100
x> 100, where e is a constant. i. What value must e take in order for this to define a valid PDF? ii. What is the probability that the bulb lasts no longer than 150 hours? ii. Given that a bulb lasts longer than 150 hours, what is the probability that it lasts longer than 200 hours? Evaluate the cumulative distribution function.
the goal of this coding exam is to quickly get off you the ground with the array method every().
input
- the input will be single line containing an array of objects candidatesList
output
- the output should be single line containing an array with names of the selected candidates.
input1
[{'name': 'Blake Hodges', 'points':[76, 98, 88, 84]},[{'name': 'James Anderson', 'points':[0, 98, 12, 33]},[{'name': 'Matthew Norton', 'points':[89, 67, 83, 93]}
output1
['Blake Hodges]
function readLine() {
return inputString[currentLine++];
}
function main() {
const candidatesList = JSON.parse(readLine().replace(/'/g, '"'));
/* Please do not modify anything above this line */
// Write your code here
}
A stone is dropped into the well and 4 seconds later the sound of splash is heard. If sound travels at a speed of 340 m/s, how deep is the well ?
A ball is thrown vertically downward from a cliff 48 m high and reaches the ground 2 s later. What was the ball's initial velocity ?
Paul wants to investigate how much time his students spend on the internet.
He gives each of them a questionnaire.
Which of these is the most appropriate question?
Explain your choice in the comment box.
#339914 on Dec 2023