The pickup truck cheering for Mavericks is 6 ft in width and 7 ft in height. Its drag coefficient (without the sign) is CD = 0.83. Estimate the horsepower required to drive the truck at 50 miles/hour (the temperature and pressure are 70°F and 1 atm respectively) a) Without the sign b) With the sign 6 ft Go Mavs! 3 ft
Answers
a) Without the sign: 53.79 hp.
b) With the sign: The sign does not affect the drag force acting on the truck, so the horsepower required would still be 53.79 hp.
To estimate the horsepower required to drive the truck at 50 miles/hour, we can use the following equation:
Power (hp) = (Drag Force (lb) * Velocity (mph)) / 375
The drag force acting on the truck can be calculated using the drag coefficient and the frontal area of the truck:
Drag Force (lb) = (1/2) * Density of Air (lb/ft^3) * Velocity (mph)^2 * Drag Coefficient * Frontal Area (ft^2)
We can assume the density of air to be approximately 0.00237 lb/ft^3 at a temperature of 70°F and pressure of 1 atm.
Plugging in the values given in the question, we get:
Drag Force (lb) = (1/2) * 0.00237 * 50^2 * 0.83 * (6 ft * 7 ft) = 647.24 lb
Plugging this value into the equation for power, we get:
Power (hp) = (647.24 lb * 50 mph) / 375 = 53.79 hp
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Related Questions
The electric field in a region of space points in the x-direction, and has magnitude E(x) = x2 + 2x + 3 (Where x is distance in Sl units, and x>0). If the electric potential at x=0 is 40 Volts, what is the electric potential at x=3? Express your answer as a number in Volts (so, if you answer was "40 Volts", you'd just enter "40").
Answers
The electric potential at x=3 in the given electric field is 64 Volts.
To find the electric potential at x=3, we need to integrate the electric field from x=0 to x=3, since electric potential is the integral of the electric field with respect to distance. The electric field is given as E(x) = x^2 + 2x + 3, so we can integrate this function to get the electric potential as a function of x. Integrating E(x) from 0 to 3 gives us the electric potential difference between x=0 and x=3, which is the same as the electric potential at x=3 minus the electric potential at x=0. Solving for the electric potential at x=3, we get V(3) = V(0) + integral(E(x) dx from 0 to 3). Plugging in the given values, we get V(3) = 40 + (3^3)/3 + 2(3^2)/2 + 3(3) = 64 Volts. Therefore, the electric potential at x=3 is 64 Volts.
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Задание3 Напишите развернутый ответ на вопрос: «Почему непобедим тот народ, у которого «память корнями уходит в века?» (5-6 предложений)
Answers
By appropriate streamlining, the drag coefficient for an airplane is reduced by 17% while the frontal area remains the same. For the same power output, by what percentage is the flight speed increased? First, write the equation for the power output using terms CD, P, U, A. P= Ср ½ rho А eTextbook and Media Using multiple attempts will impact your score. 10% score reduction after attempt 1 Part 2 By what percentage is the flight speed increased? Speed increase a ___ %
Answers
The speed at which an aero plane is designed to navigate (VA) is the speed that the airplane The lift and G-force increase with rises to 12, 15, and 18 degrees.
Explain about the Speed?It is the pace at which a displacement changes in relation to its environment. The speed of a body is a scalar quantity since it is independent of direction. In a specific direction, it is also the rate at which displacement with regard to the environment is changing.
Velocity, as opposed to speed, refers to the pace and direction of an object's movement as it moves down a path.
Speed is defined as the rate at which a distance changes over time. It has a distance by time dimension. The basic unit of distance with the basic unit of time are combined to form the SI unit of speed.
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The sample variance in the strength test values of 15 bricks is 6.89 (MN/m2 ) 2 with a mean of 6.92 MN/m2 . What is the range of the true mean value at the confidence interval of 90%
Answers
Answer:
The range of true mean value is "\(6.92 \pm 1.11142\)".
Explanation:
The given values are:
Number of bricks,
n = 15
Variance,
σ² = 6.89 MN/m²
Mean,
\(\bar{x} = 6.92 \ MN/m^2\)
90% confidence level,
z = 1.64
Now,
The margin of error will be:
= \(z\sqrt{\frac{\sigma^2}{n} }\)
On substituting the given values, we get
= \(1.64\sqrt{\frac{6.89}{15} }\)
= \(1.64\times 0.6777\)
= \(1.11142\)
So,
Range of true mean value will be:
= \(Mean \pm Margin \ of \ error\)
= \(6.92 \pm 1.11142\)
When installing an engine on an engine stand for disassembly, Technician
A says to always be sure the stand is rated at or above the engine's
weight. Technician B says the engine's center of gravity must be balanced
on the stand for safety. Who is correct?
Select one:
A. Technician A
B. Technician B
C. Both A and B
D. Neither A nor B
Answers
Answer:
The answer is D
Explanation:
Because neither of them are wrong I dont know how to really tell you!
Consider a condenser in which steam at a specified temperature is condensed by rejecting heat to the cooling water. If the heat transfer rate in the condenser and the temperature rise of the cooling water is known, explain how the rate of condensation of the steam and the mass flow rate of the cooling water can be determined. Also, explain how the total thermal resistance R of this condenser can be evaluated in this case.
Answers
Answer:
Q = [ mCp ( ΔT) ] \(_{cooling water }\)
(ΔT)\(_{cooling water}\) and Q is given
\(m_{cooling water}\) = \(\frac{Q}{Cp[ T_{out} - T_{in} ] }\)
next the rate of condensation of the steam
Q = [ m\(h_{fg}\) ]\(_{steam}\)
\(m_{steam} = \frac{Q}{h_{fg} }\)
Total resistance of the condenser is
R = \(\frac{Q}{change in T_{cooling water } }\)
Explanation:
How will the rate of condensation of the steam and the mass flow rate of the cooling water can be determined
Q = [ mCp ( ΔT) ] \(_{cooling water }\)
(ΔT)\(_{cooling water}\) and Q is given
\(m_{cooling water}\) = \(\frac{Q}{Cp[ T_{out} - T_{in} ] }\)
next the rate of condensation of the steam
Q = [ m\(h_{fg}\) ]\(_{steam}\)
\(m_{steam} = \frac{Q}{h_{fg} }\)
Total resistance of the condenser is
R = \(\frac{Q}{change in T_{cooling water } }\)
Recall a recent decision that you had difficulty making. How did you diagnose and solve the challenge? Were the consequences good, bad, or both? Should you, and could you, have done anything differently in making the decision? Based on what you have learned so far, what changes would you make and why?
Answers
Answer:
yes maybe
Explanation:
I have a project and everyone in the world will know about it.
Answer:
both
Explanation:
11. When the blower control is set on "HIGH" the blower motor receives full battery voltage through a
O A. solenoid
O B. high-speed resistor
O C. clamp connector
OD. relay
Answers
When the blower control is set on "HIGH" the blower motor receives full
battery voltage through a high-speed resistor.
What is a Resistor?A resistor is a device that provides electrical resistance in a circuit. A
device contains different resistors which regulates the amount of current
flowing through it.
This permits the regulation of the blower which have various speed ranges
available. The high-speed resistor is responsible for receiving the voltage
in a blower when the control is set on "HIGH".
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What does a restriction in the fuel return line cause?
Answers
Answer:
Carburetor flooding, engine stalling, and hard starting
Explanation:
If the fuel return hose becomes blocked or kinked it may cause the carburetor to flood from excessive fuel or pressure buildup.
A ___________ is defined as a change in shape of the part between the damaged and undamaged area hat is smooth and continuous . When the part is straightened, it is returned to proper shape and state without any areas of permanent deformation.
Answers
A bend is defined as a change in the shape of the part between the damaged and undamaged area that is smooth and continuous.
What is a kink?
A kink can be defined as a sharp bend with a small radius over a short distance.
So when any part is kinked it must be replaced without any doubt. A part is kinked if it just doesn't work on the repair.
What is a bend?
Unlike a kink, a bend can be restored. That is after a bend also a part can be bought back to its original position.
When the part is straightened, it is returned to proper shape and state without any areas of permanent deformation.
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assume the trend in architectural design is toward more contemporary styled homes. because of this trend, a conservatively designed traditional home will tend to
Answers
As the trend in architectural design is moving towards more contemporary styled homes, traditional homes are becoming less desirable. People are looking for sleek, modern, and functional homes that reflect their current lifestyle.
The trend in architecture is now moving towards clean lines, simple materials, and open floor plans. Contemporary homes are designed with functionality and practicality in mind, and they are often built using sustainable materials. The result is a home that is not only beautiful but also environmentally friendly.
Traditional homes will tend to be overlooked by buyers in today's market. People want a home that is modern and that reflects their current lifestyle. While traditional homes are still popular with certain groups of people, they are no longer the go-to choice for most buyers.
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engineering economics
Answers
Explanation:
mathematics education grade 7
polytropic process is a thermodynamic process that obcys the relation: pV
α
= constant The exponent α is known as the polytropic index, and it may take on any value from 0 to [infinity] depending on the particular process: α=0,p= constant, corresponds to an isobaric (constant-pressure) process; α→[infinity] corresponds
α
an isochoric (constant-volume) process; α=1,pV= constant, corresponds to an isothermal (constant-temperature) procas; α=γ,pV= constant, corresponds to an iscntropic (constant-cntropy) process. Prove that in a polytropic expansion of an ideal gas defined by the equation pV
α
= constant the gas absorbs heat for α<γ and transfers it for α>γ, where γ=c
p
/c
V
.
Answers
Polytropic process is a thermodynamic process in which the relation between pressure and volume is expressed as pV^α = constant, where α is the polytropic index. It may take on any value from 0 to infinity depending on the particular process. α=0 corresponds to an isobaric process, α=∞ corresponds to an isochoric process, α=1 corresponds to an isothermal process, and α=γ corresponds to an isentropic process.
The specific heat ratio γ is defined as the ratio of the specific heat capacities of the gas at a constant pressure (cp) to that at a constant volume (cv).Hence, γ = cp/cv. Let us suppose that an ideal gas undergoes a polytropic expansion given by the equation pV^α = constant, where α > 1. For this process, the gas transfers heat to the surroundings. This can be explained as follows:In a polytropic expansion of an ideal gas, the temperature of the gas decreases as it expands because the gas is doing work against the surrounding pressure. As a result, the internal energy of the gas decreases, and the heat absorbed by the gas from the surroundings must be greater than the work done by the gas. This means that the gas absorbs heat from the surroundings.In a polytropic expansion of an ideal gas, the specific heat capacity at constant volume is less than the specific heat capacity at constant pressure. The ratio of the specific heat capacities, γ, is defined as cp/cv. Hence, the value of γ for an ideal gas is always greater than 1. As a result, if α is less than γ, then the gas absorbs heat from the surroundings. If α is greater than γ, then the gas transfers heat to the surroundings. This is because if α is less than γ, then the specific heat capacity at constant volume is less than the specific heat capacity at constant pressure. Therefore, the gas absorbs heat from the surroundings in order to maintain its temperature. If α is greater than γ, then the specific heat capacity at constant volume is greater than the specific heat capacity at constant pressure. Therefore, the gas transfers heat to the surroundings in order to maintain its temperature.
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For the SR-latch below high levels of Set and Reset result in Q= 1 and 0, respectively. The next state is unknown when both inputs are at high level. Identify Q and Q_bar= Q’ and label NOR1 and NOR2 outputs accordingly. Complete the waveform template with a 5 ns propagation delay for the NOR gates. The initial state was unknown. Mark the outputs with "?" after the critical racing of signals SR=11→00
Answers
Answer:
hello your question lacks the required image attached to this answer is the image required
answer : NOR1(q_) wave is complementary to NOR2(q)
Explanation:
Note ; NOR 2 will be addressed as q in the course of this solution while NOR 1 will be addressed as q_
Initial state is unknown i.e q = 0 and q_= 1
from the diagram the waveform reset and set
= from 0ns to 20ns reset=1 and set=0.from the truth table considering this given condition q=0 and q_bar=1 while
from 30ns to 50ns reset=0 and set=1.from the truth table considering this condition q=1 and q_bar=1.so from 35ns also note there is a delay of 5 ns for the NOR gate hence the NOR 2 will be higher ( 1 )
From 50ns to 65ns both set and reset is 0.so NOR2(q)=0.
From 65 to 75 set=1 and reset=0,so our NOR 2(q)=1 checking from the truth table
also from 75 to 90 set=1 and reset=1 , NOR2(q) is undefined "?" and is mentioned up to 95ns.
since q_ is a complement of q, then NOR1(q_) wave is complementary to NOR2(q)
(4) At higher power levels, it is crucial for the efficiency to be high (usually between 95% - 98.5%), this makes a transformer the most efficient electrical devices. Why is this high efficiency so important
Answers
High efficiency is crucial in transformers, especially at higher power levels (between 95% - 98.5%), due to several reasons related to energy conservation, cost savings, and environmental impact.
High efficiency in transformers is important for various reasons. Firstly, it ensures that a large majority of the input electrical energy is converted into usable output energy, minimizing wastage. This is especially critical in high-power applications where even small energy losses can result in significant overall power loss. Efficient transformers help conserve energy resources and reduce the environmental impact associated with energy generation. Secondly, high efficiency translates to cost savings. More efficient transformers require less energy input to deliver the desired output power, reducing operational costs over the transformer's lifespan. This is particularly beneficial in industrial and commercial settings where large amounts of power are consumed. Moreover, high efficiency in transformers leads to reduced heat generation during operation. Transformers with lower losses produce less waste heat, resulting in improved thermal management and increased reliability. Lower heat generation also reduces the need for additional cooling mechanisms, saving on equipment and maintenance costs. Overall, high efficiency in transformers plays a significant role in optimizing energy utilization, reducing operational expenses, and promoting environmental sustainability. It is a key factor in selecting and designing transformers for efficient power distribution systems.
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True or false : In improper integrals infinte intervals mean that both of the integration limits are should be infinity
Answers
Answer:
An improper integral is a definite integral that has either or both limits infinite or an integrand that approaches infinity at one or more points in the range of integration
Explanation:
A jointed arm robot can rotate on the following 6 axes?
Answers
Answer:
-x, +x, -y, +y, -z, +z
Explanation:
These are the 6 axes
In your own understanding, what is an air dispersion model?
Answers
Answer:
Dispersion modeling uses mathematical formulations to characterize the atmospheric processes that disperse a pollutant emitted by a source. Based on emissions and meteorological inputs, a dispersion model can be used to predict concentrations at selected downwind receptor locations
Explanation:
I need help finding a good selling for a 71 Ford mustang hardtop coupe price This isn't really a school question but it's the only place I know we're I can ask questions so I'll give it a go
Answers
Answer:
you know you could use like quora or yahoo answers
Identify the criteria of the following items (Assets, Liabilities or Owner Equity): Create Balance Sheet from Following items
Notes payable 22,400
Inventory 55,000
Account receivable 9,600
Capital 72,000
Account payable 43,200
Building, Land and Equipment 96,000
Short Term Loan or Short term debt 5,000
Office supplies 12,000
Retained earnings 34,800
Cash 4,800
Problem Two:
Indicate which of the following statements is True or False:
it is better for the company to own assets greater than the liabilities and owner-equity
the accounting is identical to the finance
The start of any company done by the Financing activity, then the investing then the operation.
If you decided to buy a car, this considers expenses.
It is better to have short and profitable operating cycle.
The ineffective collection function can affect the operating cycle
One of the function of the supply chain management may interfere to the financial management
The cash flow statement contain the finance and investing activities only
The liquidity ratio indicate the capacity of the company to pay long term obligation
If you have a profitable project and have shortage in the finance, it’s better to raise funds by invite new partners
` Problem Three:
According to the above income statement:
Comment on the following points according to you own opinion:
What is the main reason for increase Sales increase?
The reason behind increase the percentage of cost of goods sold from sales revenue from one year to another.
Do you think that the company should continuous with its market strategy?
Comment on the distribution cost and the reason for its decrease as a percentage.
What could be the reason for the fluctuation in the Administrative Expenses?
Interest expenses increase due to extend the credit facilities, what do you recommend?
Problem Four:
According to the above financial ratios:
Comment on the liquidity and the assets efficiency and the profitability
Answers
Answer:
Explanation:
it can only be 22,400=55000
and 9,600=72,000 so it won't be an equal criteria so the answer is 7=9
First, ask the user the following three questions and store the answers in a nested list. . What is your name? What is your quest? • What is your favorite color? Store at least 6 sets of responses. Example nested list: [['Sir Robin', 'to find the Holy Grail', 'red'], ['Matt', 'to travel the world', 'blue'), etc..] Second, sort the list alphabetically by color and print out the results:
Answers
To create a nested list with the user's responses and sort it alphabetically by color, you could use the following code:
for i in range(6):
print("What is your name?")
name = input()
print("What is your quest?")
quest = input()
print("What is your favorite color?")
color = input()
responses.append([name, quest, color])
responses.sort(key = lambda x: x[2])
print(responses)
This will print out the sorted list of responses, with each inner list sorted alphabetically by color.
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if you want to withdraw $10000 at the end of two years and $35000 at the end of four years, how much should you deposit now into an account that pays 9% interest compounded annually?
Answers
Answer:
490000 dollars
Explanation:
the answer is A,C
i did it already
Answers
Tru or false A tractor is experiencing a reduction in pressure the amount of force this will result in decreasing the Propulsion of the tractor
Answers
Answer:
true
Explanation:
i took the test and got it right
Assignment 1: Structural Design of Rectangular Reinforced Concrete Beams for Bending
Perform structural design of a rectangular reinforced concrete beam for bending. The beam is simply supported and has a span L=20 feet. In addition to its own weight the beam should support a superimposed dead load of 0.50 k/ft and a live load of 0.65 k/ft. Use a beam width of 12 inches. The depth of the beam should satisfy the ACI stipulations for minimum depth and be proportioned for economy. Concrete compressive strength f’c = 4,000 psi and yield stress of reinforcing bars fy = 60,000 psi. Size of stirrups should be chosen based on the size of the reinforcing bars. The beam is neither exposed to weather nor in contact with the ground, meaning it is subjected to interior exposure.
• Use the reference on "Practical Considerations for Rectangular Reinforced Concrete Beams"
• Include references to ACI code – see slides from second class
• Include references to Tables from Appendix A
• Draw a sketch of the reinforced concrete beam showing all dimensions, number and size of rebars, including stirrups.
Answers
Answer:
Beam of 25" depth and 12" width is sufficient.
I've attached a detailed section of the beam.
Explanation:
We are given;
Beam Span; L = 20 ft
Dead load; DL = 0.50 k/ft
Live load; LL = 0.65 k/ft.
Beam width; b = 12 inches
From ACI code, ultimate load is given as;
W_u = 1.2DL + 1.6LL
Thus;
W_u = 1.2(0.5) + 1.6(0.65)
W_u = 1.64 k/ft
Now, ultimate moment is given by the formula;
M_u = (W_u × L²)/8
M_u = (1.64 × 20²)/8
M_u = 82 k-ft
Since span is 20 ft, it's a bit larger than the average span beams, thus, let's try a depth of d = 25 inches.
Effective depth of a beam is given by the formula;
d_eff = d - clear cover - stirrup diameter - ½Main bar diameter
Now, let's adopt the following;
Clear cover = 1.5"
Stirrup diameter = 0.5"
Main bar diameter = 1"
Thus;
d_eff = 25" - 1.5" - 0.5" - ½(1")
d_eff = 22.5"
Now, let's find steel ratio(ρ) ;
ρ = Total A_s/(b × d_eff)
Now, A_s = ½ × area of main diameter bar
Thus, A_s = ½ × π × 1² = 0.785 in²
Let's use Nominal number of 3 bars as our main diameter bars.
Thus, total A_s = 3 × 0.785
Total A_s = 2.355 in²
Hence;
ρ = 2.355/(22.5 × 12)
ρ = 0.008722
Design moment Capacity is given;
M_n = Φ * ρ * Fy * b * d²[1 – (0.59ρfy/fc’)]/12
Φ is 0.9
f’c = 4,000 psi = 4 kpsi
fy = 60,000 psi = 60 kpsi
M_n = 0.9 × 0.008722 × 60 × 12 × 22.5²[1 - (0.59 × 0.008722 × 60/4)]/12
M_n = 220.03 k-ft
Thus: M_n > M_u
Thus, the beam of 25" depth and 12" width is sufficient.
do you play escape from tarkov if so do you want to play it with me
Answers
Answer:
i play it
Explanation:
Which statement about the seal between the respirator and the wearer's face is true?
POSSIBLE ANSWERS:
Negative pressure respirators prevent ambient air from entering the mask.
Cosmetic surgery can be completed without a re-evaluation of respirator fit.
Positive pressure respirators tighten the face mask when the wearer inhales.
Facial hair can prevent a respirator from properly sealing to the wearer’s face.
Answers
A true statement about the seal between the respirator and the wearer's face is: D. facial hair can prevent a respirator from properly sealing to the wearer’s face.
What is a respirator?A respirator can be defined as a personal protective equipment that is typically worn over the face to protect the mouth and nose, while protecting the wearer from inhaling smoke, dust, or other toxic chemical substances.
In this context, a true statement about the seal between the respirator and the wearer's face is that facial hair has the ability to prevent a respirator from properly sealing to the wearer’s face.
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Match the following items with their correct description.
A. Manufacturers rating capacity
B. Block Used to lift and hold heavy loads, allow them for travel
C. Level surface
D. Jack
1. Place the jack head against this
2. Used to lift and hild heavy loads, allow them for travel
3. Must be marked on all jacks; must not be exceeded
4. Place this under the base of the jack when it's necessary to provide a firm foundation
Answers
Answer:
A. Manufacturers rating capacity ↔ 3. Must be marked on all jacks; must not be exceeded
B. Block Used to lift and hold heavy loads, allow them for travel ↔ 1. Place the jack head against this
C. Level surface ↔ 4. Place this under the base of the jack when it's necessary to provide a firm foundation
D. Jack ↔ 2. Used to lift and hold heavy loads, allow them for travel
Explanation:
The manufacturers rating for a jack is labelled on all jacks and should be referenced to compare with the load to be lifted so as to ensure a safe and successful lifting.
In order to lift a load, such as a car, it is required to place the jack on a level surface to provide balance during the lifting task
The head of the jack is placed against the block for lifting heavy objects for proper performance
what are the values of the alternating and mean components of the shear stress? the value of the alternating component is kpsi. the value of the mean component is
Answers
The value of the alternating component of shear stress is kpsi. The value of the mean component is not provided in the question.
The question only provides the value of the alternating component of shear stress, which is measured in kpsi (kilopounds per square inch). The mean component of shear stress is not provided, so its value cannot be determined from the given information.
The alternating component of the shear stress refers to the oscillating part of the stress that changes in magnitude and direction. The mean component, on the other hand, is the average value of the stress throughout the cycle. These values are essential in understanding material behavior and fatigue life under cyclic loading conditions. They are typically measured in units of stress, such as kilopounds per square inch (kpsi) in the Imperial system.
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What historic event / period marked the beginning of the manufacturing boom in the mid-
to-late 18th century (1700s)?
Answers
Answer:
Industrial revolution too bad at english languge not fleunt so if say a whole story of this i will not make secene but answer is to it industrial revolution.
Explanation: