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matrenka [14]
3 years ago
9

How fast would a(n) 74 kg man need to run in order to have the same kinetic energy as an 8.0 g bullet fired at 370 m/s?

Mathematics
1 answer:
beks73 [17]3 years ago
4 0
Kinetic energy, KE = 0.5 mv^2 Where m is the mass V is the velcocity  
First calculate the kinetic energy of the bullet  
Ke = 0.5(0.008 kg) ( 370 m/s)^2
Ke = 547.6 J  

547.6 J = 0.5( 74 kg) v^2
<span>V = 3.85 m/s</span>
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.. Carmen bakes and sells pies. She sells each pie for $12.99. The ingredients for 1 apple
Rainbow [258]

Answer:   $21.20

Step-by-step explanation:

first, find the profit carmen makes on each pie

12.99 - 8.75 = 4.24

now, we multiply that by the 5 pies that she sold to see what profit she made

4.24 x 5 = 21.2

$21.20

4 0
3 years ago
what is the slope that passed through the points (-3, -9) and (22, -4)? Write your answer in a simplest form
andrew11 [14]

Answer:

साहस को सलाम पाठ/अरुणिमा सिन्हा कहां बैठी थी

Step-by-step explanation:

I hope you understand

8 0
3 years ago
(19,-9) (-7,-15) in slope intercept form
never [62]

Answer:

y=\frac{3}{13}x-\frac{174}{13}

Step-by-step explanation:

slope:

m=\frac{-15-(-9)}{-7-19} =\frac{-15+9}{-26} =\frac{-6}{-26} =\frac{3}{13}

Equation, with the point (19, -9):

y-(-9)=\frac{3}{13} (x-19)

y+9=\frac{3}{13} x-\frac{57}{13}

y=\frac{3}{13} x-\frac{57}{13} -9

                                      -9=-9(\frac{13}{13} )=-\frac{117}{13}

y=\frac{3}{13}x-\frac{174}{13}

Hope this helps

8 0
3 years ago
Each side of a square is increased by 3 inches. The perimeter of the new square is 40 inches more than twice the length of the s
RUDIKE [14]

Length of side of new square is 17 inches

Step-by-step explanation:

  • Step 1: Let the length of the side of the old square be x. Then length of side of new square = x + 3 and Perimeter of new square = 40 + 2x

Perimeter of a square = 4 × side

⇒ 4(x + 3) = 40 + 2x

⇒ 4x + 12 = 40 + 2x

⇒ 2x = 28

⇒ x = 14 inches

  • Step 2: Find length of side of the new square

⇒ x + 3 = 17 inches

6 0
3 years ago
Simplify 12n-2n⁴-10n-2n⁴+n<br><br>a. 4n⁴+3n<br>b. 3n<br>c. -4n⁴+3n<br>d. -n¹¹
Serjik [45]

The answer is C. -4n⁴+3n.


Separate the expression by its like terms.

12n-2n⁴-10n-2n⁴+n

12n+(-10n)+n=3n

-2n⁴+-2n⁴=-4n⁴


The simplified expression comes out to -4n⁴+3n.

3 0
3 years ago
Read 2 more answers
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