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uranmaximum [27]
4 years ago
5

E total kinetic energy of a 2500 lbm car when it is moving at 80 mph (in BTU)?

Engineering
1 answer:
Galina-37 [17]4 years ago
3 0

Answer:

KE= 687.21 BTU

Explanation:

Given that

Mass of car = 2500 lbm

We know that 1 lb=0.45 kg

So the mass of car  m =1133.98 kg

Velocity of car= 80 mph

We know that 1 mph =0.44 m/s

So velocity of car = 35.76 m/s

As we know that kinetic energy (KE) is given as follows

KE=\dfrac{1}{2}mv^2

Now by putting the values

KE=\dfrac{1}{2}\times 1133.98\times 35.76^2

KE=725.05 KJ

We know that   1 KJ = 0.94 BTU

So  KE= 687.21 BTU

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For each of the following pairs of polymers, do the following: (1) State whether it is possible to determine whether one polymer
Vinvika [58]

Answer:

1). Linear and syndiotactic poly(vinyl chloride); linear and isotactic polystyrene

2). Network phenol-formaldehyde; linear and heavily crosslinked cis-isoprene

3). Linear polyethylene, lightly branched isotactic polypropylene

Explanation:

1). It is very much possible to decide for the two polymers. Here the linear as well as the syndiotactic poly(vinyl chloride) are likely to be crystallize; the side - group  phenyl of the polystyrene is more bulkier than CI side group for the poly(vinyl chloride). The syndiotactic as well as the isotactic isomers are  likely to crystallize equally.

2). No we cannot decide for the two polymers. Both of them are crosslinked and the network polymers may not crystallize.

3). It is a possible to decide the two polymers. The linear polyethylene is likely to crystallize.

3 0
3 years ago
A joining process in which a filler metal is melted and distributed by capillary action between faying surfaces, the base metals
PolarNik [594]

Answer:

A soldering process

Explanation:

Given that ,The filler metal's melting point temperature is less than 450 ° C.

Usually, the brazing material has the liquid temperature of the melting point, the full melting point of the filler material approaching 450 degrees centigrade, while the filler material is less than 450 degrees centigrade in the case of soldering.

Therefore the answer is "A soldering process".

4 0
3 years ago
Duties of school principal​
nikitadnepr [17]

The duties of school principal are those responsibilities or obligation he must carry out for proper management of the school. Some of the duties are as follows:

  • Supervision of instruction
  • Supervision of Curriculum Development and Improvement
  • Supervision of curricula rand Co-curricular Activities
  • Supervision of School Hostel

<h3>What is school administration?</h3>

School administration can simply be defined as process which involves the management of all the school operations and activities.

Learn more about school administration:

brainly.com/question/24243635

#SPJ1

8 0
2 years ago
Given two input integers for an arrowhead and arrow body, print a right-facing arrow. Ex: If the input is 0 1, the output is
Lyrx [107]

For printing a right facing with input 01, define the class for right facing arrow and give the value with appropriate space using '%6d'  and then display the right facing arrow.

Further Explanation:

The code to print the arrowhead and arrow body is as follows:

Import java.util.Scanner;

//Define the method.

public class RightfacingArrow

{

//Define the main method.

public static void main(String[] args)

{

//Create an object of Scanner class.

Scanner object = new Scanner(System.in);

//Declare the variables.

int baseChar;

int headChar;

//Prompt the user to enter the input values.

baseChar = object.nextInt();

headChar = object.nextInt();

 

//Display the headchar in position 6 from the  starting.

System.out.printf("%6d ", headChar);

//Display the arrows.

System.out.println(baseChar+""+baseChar+""

+baseChar+""+baseChar+""+baseChar+""

+headChar+""+headChar);

System.out.println(baseChar+""+baseChar

+""+baseChar+""+baseChar+""+baseChar

+""+headChar+""+headChar+""+headChar);

System.out.println(baseChar+""+baseChar

+""+baseChar+""+baseChar+""

+baseChar+""+headChar+""+headChar);

//Display the headchar in position 6 from the  starting.

System.out.printf("%6d ", headChar);

}

}

Output:

If the input is 01, the output will be as below:

    1

0000011

00000111

0000011

    1

Learn more:

1. A company that allows you to license software monthly to use online is an example of ? brainly.com/question/10410011  

2. Prediction accuracy of a neural network depends on _______________ and ______________. brainly.com/question/10599832  

Answer details:

Grade: College Engineering

Subject: Computer Science and Enginnering

Chapter: Java Programming

Keyword:

Java, input, output, programming, statements, if-else, loops, print, scan. right facing arrows, body, main body, char, int, variables, scanner class, abstract class, constructor, desctructor

8 0
3 years ago
An engineering student claims that a country road can be safely negotiated at 65 mi/h in rainy weather. Because of the winding n
igomit [66]

Answer:

Negotiated speed should be lower. Perception/reaction time is too less than design values.

Explanation:

Given:

- The claimed safe speed V_1 = 65 mi/h

- Sight distance D = 510 ft

- The practical deceleration a = 11.2 ft/s   ... according to standards

Find:

Assuming practical stopping distance, comment on the student whether the claim is correct or not

Solution:

- Calculate the practical stopping distance:

                      d = V_1^2 / 2*a

                      d = ( 65 * 1.46 )^2 / 2*11.2 = 402.054 ft

- Solve for reaction distance d_r is as follows:

                     d_r = D - d = 510 - 402.054 = 107.945 ft

- The perception/time reaction is:

                   t_r = d_r/V_1 = 107.945 / 94.9

                  t_r = 1.17 sec

Answer: The perception/reaction time t_r = 1.17 s is well below the t = 2.3 s.

Hence, the safe speed should be lower.

4 0
3 years ago
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