1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
LUCKY_DIMON [66]
3 years ago
13

Goldberg's sleigh currently runs at 203mph, but he needs it to reach 400mph with all the packages he has to deliver.

Mathematics
2 answers:
ValentinkaMS [17]3 years ago
7 0

Answer:

He needed 3747.61 HP to reach 400 mph.

Step-by-step explanation:

Given data :

P (air density)  =  0.0019 slug/ft³

A (Area)  = 26.72 ft²

C(d) = 0.398

crr = 0.015

V = 400 mph = 587 ft/sec = 178.92 m/sec

weight = 2019 lb = 8980.96 N    [1 pound = 4.44822 N]

P=\frac{Force\times Displacement}{Time}

P =  Force × Velocity = FV

F = F(sum) = F(drag) + F(rolling resistance)

F(drag) = \frac{1}{2}P\times V^2\times C(d)A

F(rolling resistance) = weight × crr

HP=\frac{P}{1hp}   1hp = 745.7 watts

F(drag) = \frac{1}{2}P\times V^2\times C(d)A

=\frac{1}{2}\times 0.0019\times 587^{2} \times 0.398\times 26.72

= 3481.23  \frac{slug\times ft}{sec^2}

convert  \frac{slug\times ft}{sec^2}  to  \frac{kg\times m}{s^2}

1 slug = 14.5939 kg

1 ft = 0.3048 m

\frac{slug\times ft}{sec^2} = 14.5939 × 0.3048 = 4.448 \frac{kg\times m}{s^2}  or newton

Since F(drag) = 3481.23 × 4.448 N

                      = 15484.51 N

P = F(drag) × V

   = 15484.51 × 178.92 N m/s

   = 2770488.529 watts

F rolling resistance = crr × w

                               = 0.015 × 8980.96 N

                               = 134.714 N

Power = (Fdrag + Frolling resistance) × V

            = (15484.51 + 134.714) × 178.92

            = 15619.224 × 178.92

            = 279459.558 watts

Power in HP

HP=\frac{P}{hp}

=\frac{279459.558}{745.7}

= 3747.61 HP

He needed 3747.61 HP to reach 400 mph.

   

Westkost [7]3 years ago
5 0

Answer:

5,813 HP

Step-by-step explanation:

P=f*v

f=1/2*p*v^2*C*A

HP=(f*v)/550

You might be interested in
HELP! Find the value of the 30th percentile of the following set of data. 129, 113, 200, 100, 105, 132, 100, 176, 146, 152
BlackZzzverrR [31]
Let list the data in ascending order 100, 100, 105, 113, 129, 132, 146, 152, 176, 200

There are ten numbers so the thirtieth percentile would be the .3 * 10 

= 3rd number, ordered from smallest to largest. 

so the third number, the thirtieth percentile, is 105

7 0
3 years ago
8
blagie [28]

Answer:

The new function is g(x) = x² +1

Step-by-step explanation:

<u><em>Explanation:-</em></u>

Given that the function f(x) = x²

From graph ,

The parabola  y = x² is shifting to up with '1' units

                    y = x² +1

The new function is g(x) = x² +1

<u><em>Verification:-</em></u>

    y = x²+1

Put x=0 ⇒ y =1

The point (0,1) lies on the parabola y = x²+1

similarly put x =1 and y = 2

The Point (1,2) lies on the Parabola y = x²+1

∴ The new graph  y = x²+1

3 0
3 years ago
Find the missing probability.<br><br> P(A)=13/20,P(A∩B)=13/25,P(B|A)=?
Tju [1.3M]

By definition of conditional probability,

P(B | A) = P(A ∩ B)/P(A) = (13/25) / (13/20) = 20/25 = 4/5

4 0
3 years ago
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Paladinen [302]
Xxxxxxxxxxxxxxxxxxxxx
8 0
2 years ago
Suppose there are n people on a bus. At the next stop, 9 more people get on the bus. No one gets of the bus. Draw a bar diagram
nordsb [41]

Answer:

Algebaric Expression & Bar Diagram graphic representation of number of people in bus.

Step-by-step explanation:

No. of people on bus = n

After 9 more boarding & no one deboarding the bus , no. of people = n + 9

Bar diagrams is graphical method for presentation of data. Presenting the given in bar diagram :

7 0
3 years ago
Other questions:
  • The following data points represent how many times each child at They Care Daycare spilled on themselves at lunch.
    5·2 answers
  • PLEASE HELP ME ASAP!
    10·1 answer
  • I need help finding X please
    14·1 answer
  • The product of x and 6 is greater than or equal to 25
    14·1 answer
  • 115 = 20 + 2.5x<br> Answers <br> X= 38 <br> X= - 37/38
    11·1 answer
  • I have the same value as a group of 2 dimes and 1 nickel. what coin am I?
    9·2 answers
  • This graph shows a proportional relationship.
    12·1 answer
  • 3. Which shape could NOT be the result of a plane slicing a cube?
    12·2 answers
  • Un número decimal infinito menor que -4 y mayor que -5​
    11·1 answer
  • if 33 laptops cost 30,000 dollars, which proportion could be used to determine the cost of 11 laptops?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!