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Nikitich [7]
3 years ago
11

Ball Throws

Engineering
1 answer:
professor190 [17]3 years ago
3 0
Jake because the more speed, the more kinetic energy which = force.
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A 03-series cylindrical roller bearing with inner ring rotating is required for an application in which the life requirement is
-BARSIC- [3]

Answer:

\mathbf{C_{10} = 137.611 \ kN}

Explanation:

From the information given:

Life requirement = 40 kh = 40 40 \times 10^{3} \ h

Speed (N) = 520 rev/min

Reliability goal (R_D) = 0.9

Radial load (F_D) = 2600 lbf

To find C10 value by using the formula:

C_{10}=F_D\times \pmatrix \dfrac{x_D}{x_o +(\theta-x_o) \bigg(In(\dfrac{1}{R_o}) \bigg)^{\dfrac{1}{b}}} \end {pmatrix} ^{^{^{\dfrac{1}{a}}

where;

x_D = \text{bearing life in million revolution} \\  \\ x_D = \dfrac{60 \times L_h \times N}{10^6} \\ \\ x_D = \dfrac{60 \times 40 \times 10^3 \times 520}{10^6}\\ \\ x_D = 1248 \text{ million revolutions}

\text{The cyclindrical roller bearing (a)}= \dfrac{10}{3}

The Weibull parameters include:

x_o = 0.02

(\theta - x_o) = 4.439

b= 1.483

∴

Using the above formula:

C_{10}=1.4\times 2600 \times \pmatrix \dfrac{1248}{0.02+(4.439) \bigg(In(\dfrac{1}{0.9}) \bigg)^{\dfrac{1}{1.483}}} \end {pmatrix} ^{^{^{\dfrac{1}{\dfrac{10}{3}}}

C_{10}=3640 \times \pmatrix \dfrac{1248}{0.02+(4.439) \bigg(In(\dfrac{1}{0.9}) \bigg)^{\dfrac{1}{1.483}}} \end {pmatrix} ^{^{^{\dfrac{3}{10}}

C_{10} = 3640 \times \bigg[\dfrac{1248}{0.9933481582}\bigg]^{\dfrac{3}{10}}

C_{10} = 30962.449 \ lbf

Recall that:

1 kN = 225 lbf

∴

C_{10} = \dfrac{30962.449}{225}

\mathbf{C_{10} = 137.611 \ kN}

7 0
3 years ago
What size resistor would produce a current flow of 5 Amps with a battery voltage of 12.6 volts​
Debora [2.8K]

Answer:

resistance = 2.52 ohms

Explanation:

from the formula

V =IR

Voltage = (current)(resistance)

Resistance =

R=

R= 2.52 ohms

5 0
3 years ago
How would you use an inclined plane to increase speed?​
Elenna [48]

Answer:

i would throw it in a 90 degree angle to gain speed

Explanation:

8 0
3 years ago
Truth table for (A+B)(B+C)
serg [7]

Answer:

A truth table is a logical expression of the given inputs specially in boolean algebra and boolean functions in computer science and digital electronics.

Explanation:

Number of variables are 3 i.e A,B and C

so the number of bits are 2^3=8

A      B     C           A+B               B+C         (A+B)(B+C)

0       0     0             0                   0                    0

0       0      1             0                    1                    0

0       1       0             1                    1                    1

0       1       1              1                    1                    1

1        0      0             1                    0                   0  

1        0      1              1                     1                    1

1        1       0             1                     1                    1

1        1        1             1                     1                    1

5 0
4 years ago
A local zoo wants to keep track of how many pounds of food each of its three monkeys eats each day during a typical week. Write
Kryger [21]

Answer:

#include<iostream>

using namespace std;

int main()

{

  double data[3][5],avg,least,most,total;

  int leastNum,mostNum;

  for(int i=0;i<3;i++)

  {

      cout<<"Enter quantity of food for monkey "<<i+1<<":\n";

      for(int j=0;j<5;j++)

      {

          cout<<"Day "<<j+1<<": ";

          cin>>data[i][j];

      }

  }

  least = data[0][0];

  most = data[0][0];

  for(int i = 0;i<3;i++)

  {

      for(int j = 0;j<5;j++)

      {

          total+=data[i][j];

          if(data[i][j]>most)

          {

              most=data[i][j];

              mostNum=i+1;    

          }

          if(data[i][j]<least)

          {

              least=data[i][j];

              leastNum=i+1;

             

          }

      }

  }

  avg=total/5.0;

  cout<<"Average food eaten in a day by all the 3 monkeys: "<<avg<<endl;

  cout<<"Most amount of food eaten in a day: "<<most<<" by monkey: "<<mostNum<<endl;

  cout<<"Least amount of food eaten in a day: "<<least<<" by monkey: "<<leastNum<<endl;

  return 0;

}

6 0
4 years ago
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