Oliver is designing a new children’s slide to increase the speed at which a child can descend. His first design involved steel because it is a very strong material that can also be smooth. He found this was not a good option after all. Which explanation most logically explains why the steel was not optimal for this project?

A) Steel becomes too hot in the sun and can burn the children.
B) Steel is a composite material, and these rarely work well when building prototypes.
C) Steel is too malleable and therefore not sturdy enough.
D) Steel is an inorganic material, and these are rarely efficient.

Answers

Answer 1

Answer:

The correct option is;

A) Steel becomes too hot in the Sun and can burn the children

Explanation:

The properties of steel includes;

Low specific heat capacity, high thermal and electrical toughness, high hardness, high tensile strength, high yield strength, appreciable elongation, high fatigue strength, can easily corrode, high malleability and ability to creep

Therefore, due to the low specific heat capacity, which is 0.511 J/(g·°C) and high conductivity of steel which is about 32 W/(m·k), the temperature of the steel can rapidly rise and the hot steel surface can readily conduct the heat, (due to the temperature difference) to other bodies that come in contact

Answer 2

Answer:

Steel becomes too hot in the sun and can burn the children.

Explanation:


Related Questions

Which task does a landscape architect perform?
select the correct answer

A. planning gardens
B. arranging
C. overseeing the construction site
D. inspecting construction ​

Answers

Answer:

B

Explanation:

Answer:

the answer is b

Explanation:

how to go to music on shcool computer

Answers

Answer: I think you leasen because if you have the internet of school or you have your hootspot

Explanation:

Answer:

You need wifi unless the school lets you use the wifi from there

Explanation:

2. A
is a launched object that moves forward due to inertia and
accelerates downward due to gravity.
A. joule
B. nodule
C. phalange
D. projectile
is the curved path a launched object takes as it moves

Answers

Answer: Projectile

Explanation:
A projectile is any object that once projected or dropped continues in motion by its own inertia and is influenced only by the downward force of gravity.

.Match the benefit of full synthetic oil with engine conditions: If oil is thicker, engines lose power and efficiency.
A) Synthetic improves engine protection by resisting oil breakdown.
B) Synthetic has greater resistance to oil thickening to maintain engine efficiency.
C) Synthetic provides maximum protection in extreme hot and cold temperature conditions

Answers

Synthetic has greater resistance to oil thickening to maintain engine efficiency. The correct option is B.

What is engine efficiency?

An engine's efficiency is defined as the ratio of useful work done to heat provided is the completed work Please keep in mind that the term "work done" refers to the power delivered at the clutch or driveshaft.

This means that the work done by thermodynamic expansion is reduced by friction and other losses.

Lower viscosity without sacrificing wear protection and better cold-flow, both of which improve fuel economy, are possible with synthetic oil.

Thus, the correct option is B.

For more details regarding engine efficiency, visit:

https://brainly.com/question/13154811

#SPJ1

essay about the topic that says shop should be closed on Sundays​

Answers

Answer:

Do you mean writing about shops that close on Sunday's and making the opinion whether they should or not?

Explanation:

How do you invite people to a covorsation

Answers

Answer:

just the way u did rn

Explanation:

lol

All you have to do is go up say Hi and take it from there :’)

i have two numbers that sum to 16 and have a difference of 3. by forming two equations and solving them, find the two numbers

Answers

Answer:

(x=9.5 and y=6.5) or ( x=6.5 and y = 9.5)

Explanation:

Let equations be

x+y = 16

If

x-y = 3

Now, Adding both equations, we get

x+y+x-y = 16+3

2x = 19

x=19/2 = 9.5

y = 16-9.5 = 6.5

Now y-x = 3

Now, Adding both equations, we get

x+y+y-x = 16+3

2y = 19

y=19/2 = 9.5

x = 16-9.5 = 6.5


If you are being followed too closely while driving, you should

Answers

Answer:

Merge into a different lane.

Explanation:

The safest and most logical choice to this question would be to merge into a different lane, not speed up over the speed limit and not slow down and aggravate the driver behind you.

please help me plz ill give 100 points and do something nice i need this done today plzz

Answers

Conditioned describes a space that's heated and cooled with the rest of the house. An unconditioned space is not heated or cooled so it's the same temperature (roughly) as outdoor air.

Daniel Wiseman, a scientist for Gres-Trans Corp., wants to determine if the flow rate of a particular material changes with different changes in temperature. The data is plotted in the figure below. What type of relationship exists between the flow rate and the change in temperature? negative curved positive there is no relationship

Answers

Answer: C. There is no relationship

Explanation:

At the various temperatures, the flow rates do not seem to show any relation as similar temperatures can yield different flow rates.

The flow rates neither appear to generally increase nor decrease as a result of a decrease or an increase in temperature which means that there is a lack of a positive, negative and curvilinear relationship.

There is simply no relationship.

PLEASE HELP! I AM TAKING A TEST
On a bicycle Chain and Sprocket: Which of the following gear ratios will give you the most Torque at
the back tire?
Driver 6"; Driven 6"
O Driver 6"; Driven 4"
O Driver 6"; Driven 2.5"
O Driver 2.5"; Driven 6"

Answers

Answer:

2.5

Explanation:

Moral of the story The Big Story by George Loveridge​

Answers

how is that a question??????

THE LINE IS USED TO SHOW IMPORTANT OVERHEAD CONSTRUCTION.
A. PHANTOM
B. HIDDEN
C. EXTENSION
D. CENTER

Answers

Answer:

phantom

Explanation:

phantom is the option

How much thermal energy is needed to raise the temperature of 15kg gold from 45⁰ C up to 80⁰ C​

Answers

Answer:

68.25 kJ

Explanation:

The thermal energy Q required to raise the temperature of 15kg gold from 45⁰ C up to 80⁰ C​ is Q = mcΔθ where m = mass of gold = 15 kg, c = specific heat capacity of gold = 130 J/kg°C and Δθ = temperature change = θ₂ - θ₁ where θ₁ = 45 °C and θ₂ = 80 °C

So, Q = mcΔθ = mc(θ₂ - θ₁)

= 15 kg × 130 J/kg°C × (80 °C - 45 °C)

=  1950 J/°C × 35 °C

= 68,250 J

= 68.25 kJ

Construction engineers develop a clear
scope of the environment for the
construction project using which of the
following?
A. GPS
B. Blueprints
C. Drafting

Answers

Answer:

B. Blueprints

Explanation:

Column A
1.
2.
3.
4.
5.
-
-
Ohm's Law
Resistance
Current
Voltage
Ground
Question 9 (4 points)
Column B
a. The force or electrical pressure that has the potential to
cause electron flow in a circuit.
b. The physical phenomena arising from the behavior of
electrons and protons that is caused by the attraction of
particles with opposite charges and the repulsion of
particles with the same charge. The physical science of
such phenomena. Also, electric current used or regarded
as a source of power.
c. The opposition to current flow in a circuit; measured in
ohms.
d. Very basic circuit law that defines the relationships
between current, voltage, and resistance in a DC circuit.
e. The common return path for current in an electrical
circuit. Serves as a reference point for measuring all other
potentials in a circuit. Generally assumed to be at zero
potential with respect to the earth.

Answers

Answer / Explanation:

I am assuming the first column looks like

1. Ohm's Law

2. Resistance

3. Current

4. Voltage

5. Ground

This is typical circuit vocabulary,

1. d

2. c

3. b

4. a

5. e

You want to create extra cleaning power for your muddy bicycle by mixing dish soap and bleach together.Your friend thinks that is a really, really bad idea because of something he heard. What should you and your friend do before you do this?Why?

Answers

Answer:

Come to terms of agreement after doing research and find the answer with expert based evidence because if not, you could cause more issues than needed if you do the wrong thing. Good Luck!

Shondra’s family’s monthly net income is $6,654. The family’s budget is shown in the circle graph below. The family decides to increase the savings budget by 3 percent by decreasing one of the variable expenses by 3 percent.

Answers

Answer:

$466

Explanation:

When a car engine is running, make sure that ______________. *

Answers

Answer:

Transmission fluid level

Explanation:

Answer:

make sure its in park unless youre in the vehicle

Explanation:

AAAAAAA CAR IS RUN WAY AAA CATCH CAR

what is meant by engineering jobs ​

Answers

Answer:

Engineers work in a variety of fields to analyze, develop and evaluate large-scale, complex systems. This can mean and improve and maintaining current systems or creating brand new projects. Engineers will design and draft blueprints, visit systems in the field and manage projects.

engineering jobs are the profession of applying scientific principles to the design, construction, and maintenance of engines, cars, machines, etc. (mechanical engineering), buildings, bridges, roads, etc. (civil engineering), electrical machines and communication systems (electrical engineering), chemical plant and machinery (chemical engineering), or aircraft (aeronautical engineering)

4 ft – 6 ½ in. to inches. Record your answer in fractional inches.

Answers

Given that

4 ft – 6 ½ in.

To find,

We need to convert it it inches.

Solution,

We know that,

1 foot = 12 inches

4 feet = 4×12 inches

= 48 inches

[tex]4\ ft-6\dfrac{1}{2}\ in=48\ in+6\dfrac{1}{2}\ in\\\\=48+\dfrac{13}{2}\\\\=54.5\ \text{inches}\\\\=\dfrac{109}{2}\ \text{inches}[/tex]

Hence, 4 ft – 6 ½ in = 54.5 inches = 109/2 inches

If the IMA of a wedge is calculated to be 4.0 and the AMA of the same wedge is calculated to be 3.0, then what is the % efficiency of the wedge?

Answers

The efficacy of the wedge would be 80%

1 point
The image here shows a human arm. This is a good example of:
Biceps
Triceps
Tendon
a 1st class lever
a 2nd class lever
a 3rd class lever
a 4th class lever

Answers

You put the right answer that was the right answer

Imagine waking up every day and no one is home besides your dog and you how would you feel?

Answers

Answer:

I would be upset.... are you ok???

I think it's better to be alone and not to interrupt you when you're resting. :)

When you adjust the controller's output to achieve the setpoint, what sort of system do you have?

Answers

Answer:

Modulating control

Explanation:

pf

hope this helps!

What function does large volumes of moving water have in generating electricity

Answers

Answer:

Hydropower is a method of generating electricity that uses moving water (kinetic energy) to produce electricity. In large-scale hydropower plants the moving water drives large water turbines, and dams are needed to store water in lakes, reservoirs and rivers for later release.

Explanation:

Information such as tolerances and scale can be found in the _______________ of an engineering drawing.

Answers

Answer:

Information such as tolerance and scale can be found in the title block of an engineering drawing

Explanation:

The title block of an engineering drawing can normally be found on the lower right and corner of an engineering drawing and it carries the information that are used to specify details that are specific the drawing including, the name of the project, the name of the designer, the name of the client, the sheet number, the drawing tolerance, the scale, the issue date, and other relevant information, required to link the drawing with the actual structure or item

The term route of entry on sds refers to the way a Enters the body

Answers

Answer:Routes of Entry – The means by which a material may gain access to the body, for example, inhalation, ingestion, and skin contact. Safety Data Sheet (SDS) – The written or printed material concerning a hazardous chemical that is prepared in accordance with the HCS.

Explanation:

4. Long term marijuana use can cause

Answers

What are your choices?

One could be brain damage like memory loss
What are choices but it could cause memory lost and cancer

Before starting you presentation, you should____?

Answers

Explanation:

Rehearse, rehearse, rehearse (always aloud) ...

Memorise your opening line. ...

Practise your speech from written notes. ...

Practise presentation flow. ...

The power of silence. ...

Have a backup. ...

Arrive early. ...

Use physical props for a demo.

Answer: introduce yourself or read the tilted

Explanation: you should introduce yourself first because tht let people know how going to be introducing the project or etc. I also say tilted because people need to know what you are going to be introducing to the class or teacher.

Other Questions
Solve the linear system4x +9y = -724x +9y = 54 This needs to be answered in x and y y = -4.2x + 7.9 in standard form 30 POINTSWhich statement would fit best in the description section of your critique?A. I personally do not understand the hype by this piece B. The artists name is Leonardo da Vinci C. The main part of the composition relies on the triangular snap D. Da Vinci painted this women because she is the wife of the man who commissioned this painting Answer D is wrong so help me out you can drive to campus, take a bus, or walk. driving costs you $1/mile in gas and maintenance, the bus costs $2 for unlimited distance and walking is free but involves a dissatisfaction equivalent to $1/mile. if you live 3 miles from campus, and are a rational decision maker, what is your reservation price for a one-way bus ticket? question 9 options: $0 $2 $3 $6 In the electrolysis of aluminium ore, which is the positive ion? Give the name, not the symbol. voting provides members of society with an opportunity to shape legislation concerning current and future social programs. based on the boxplot, the top 25 percent of the cars have a typical gas mileage of at least how many miles per gallon? 15 PurposeStudents will us vector addition onthe Flat-Earth Model.TheoryVector addition is easy and useful.To add (24,0) to (0,-7), the 1st numbersare added, as are the 2nd, and the orderstays the same: (24,-7). These can be x-and y-positions, velocities, forces, etc.Which way are the streaks on theside windows of a car going 24 MPH ifdriving through rain falling at 7 MPH?That's a vector of (24,-7). The angle isfound by taking the arctangent of thesecond 2nd over the 1st: tan(-4)=16.The Flat-Earth Model claims earthis a horizontal disk. The north pole is atthe center, "Antarctica" is a rim wall atthe edge, and the sun and moon movein circular paths above the disk. If true,it should be easy to measure the sun'saltitude and make predictions.Procedure1. Find a cardboard box about the sizeof a microwave, cut off the top flaps,and set it on its side outdoors at noon.2. Cut a coffee-cup-sized hole in themiddle of the upper wall and tape asheet of aluminum foil over it. Poke asmall hole in that with a pin or tack.3 With the sun overhead, even if it isslightly cloudy, a spot of light shouldshow on the bottom surface in the box.Propping the box at a tilted angle maybe necessary, but then don't move it.Mark the box bottom where the spot isat noon, and then again at 1PM.4. Find a ruler and measure the heightfrom the noon mark up to the foil hole.Let this be y. Also measure the distancebetween the marks. Let this be x. Unitscan be inches, centimeters, whatever.The sun's ray vector in the box is (x,y).This vector can also be used to find thesun's angle above the horizon.Figure 02: The box as described.5. The sun apparently moves 1000 miin an hour. (Call someone in Ft. Worthand ask them what time of day the sunis highest in the sky, if skeptical.) Thesun's height in miles is h = 1000-y/x.6 If the Flat-Earth model is right, thesun always keeps this height, so afterseven hours, the spot goes 7-x laterally.Find the predicted sun angle above thehorizon at 7 PM using tan-(). Waitfor 7 PM and see if that's nearly right.AnalysisPlease answer each of the followingin Canvas using complete sentences:1. How high up (h) is the sun using theFlat-Earth Model?2. At what angle above the horizon isthe sun at 10 PM using this model?3. What is the diagonal distance to thesun at 10 PM by this model when itsposition vector is (10000,h) miles?4. Did this lab disprove all unpopularscientific viewpoints? Why or why not?* Ive already found my suns ray vector in the box which was (4.25, 17.25). * Choose the prepositions in the following sentence. More than one preposition may be in each sentence.Critical thinking is about taking puzzle pieces and through diligence connecting them together for an answer. The equation y=14.4x+17.0 estimates the amount that businesses will spend, in billions of dollars, on a certain business technology, where x is the number of years after 2004. For what years will the spending be more than $89 billion? What would be the benefits and drawbacks of having oil or alcohol as your main body fluid when it comes to cooling? Please help I need it soon. Find y if the slope between (1,y) and (-5,-1) is 2/3 willie coln singed his first record deal at age 16, who was the singer that the bandleader was forced to add into his group What is the value of the digit 7 in the population of Memphis? What is the value of the digit 1 in the population of Denver? How many times as great as the value of the digit 1 in the population of Cleveland in this value?PLSS HELP IT WILL MAKE ME FAIL Given L is between N and M, NL = 6x - 5, LM = 2x + 3, and NM = 4x + 9. Determine if L is the midpoint of segment MN. Justify your answer using sound mathematical reasoning. the price of a tv is 950 plus VAT at 20% .what is the total cost of the TV? Which of these statements best gives the best example of why Muslims consider Mohammed the most important historical figure in Islam? He broke away from Christianity He was the first religious prophet He was directly related to Abraham He restored monotheism to the worldBEST ANSWER GETS BRAINLIEST! please help asap question 1 and 2! Sid makes a living baking cakes. For each cake, he uses 1 3/4 cups of sugar, 4 1/5 cupsof flour, and 3/10 of a cup of milk. How many cups of ingredients will Sid need tomake 4 cakes? Please I need the answer BEST ANSWER GETS 28 POINTS AND BRAINLIEST Select the best answer from the choices below. Transportation via the waterways not only aided agriculural developments, but it also:a. helped people travel moreSelected:b. helped the Chinese patrol the water for enemiesThis answer is incorrect.c. brought in more money to the emperord. increased trade within and outside of China