Answer:
what are is ethiopia cultural ?
10) A roller coaster has a circular loop of radius 5.0 m. You go around at the minimum speed.
How fast will you be moving at the bottom?
What is your acceleration? (in m/s2, in g’s)
How does this feel? Where else have you felt this effect?
Draw a Force Diagram at the bottom.
This is dangerous. What should the radius be at the bottom, so that you only feel 2 g’s?
.
Explain why these loops have the shape that they do.
Answer:
1) The speed of the roller coaster at the bottom is approximately 15.65 m/s
2) The acceleration of the roller coaster at the bottom is 6·g's
3) The high acceleration is 6 times the force of the weight of the passengers
The high acceleration can cause gravity induced loss of consciousness
4) Please find attached a force diagram of the forces at the bottom of the roller coaster created with Microsoft Visio
5) For the acceleration at the bottom to be 2·g's the radius of the rollercoaster at the bottom should be 25 meters
5) The radius at the bottom of roller coasters are increased to reduce the normal force felt by the passengers as they pass the bottom of a circular roller coaster
Explanation:
1) The given parameters are;
The radius of the roller coaster, r = 5.0 m
The speed of the roller coaster = Minimum = 0 m/s
The shape of the roller coaster's path = Circular loop
Therefore, the maximum height of the roller coaster, h = The diameter of the of a circular path of the roller coaster, d = 2 × r = 2 × 5.0 m = 10.0 m
∴ h = 10.0 m
The minimum speed is f=given by the following equation;
[tex]F_N = \dfrac{m \cdot v^2}{R} - m \cdot g = 0 \ (At \ the \ top \ of \ the \ roller \ coaster's \ path)[/tex]
Therefore, we have;
[tex]\dfrac{m \cdot v^2}{R} = m \cdot g[/tex]
From which we have;
v = √(R × g)
Where;
R = The radius of the path of the roller coaster = 5.0 m
g = The acceleration due to gravity = 9.8 m/s² = constant
By plugging in the values of the variable, 'R', and the constant, 'g', we get;
v = √(5.0 m × 9.8 m/s²) = 7 m/s
The minimum speed of the roller coaster, v = 7 m/s
The speed of the roller coaster at the bottom is given by the conservation of energy formula as follows;
The energy at the top of the roller coaster = The energy at the bottom of the roller coaster
∴ The total mechanical energy of the roller coaster, M.E., is constant and at the top, [tex]M.E._{top}[/tex], is given as follows;
[tex]M.E._{top}[/tex] = 1/2·m·v₁² + m·g·h₁
At the bottom, the total mechanical energy is given as follows;
[tex]M.E._{bottom}[/tex] = 1/2·m·v₂² + m·g·h₂
Where;
v₁ = The velocity of the roller coaster at the top = 7 m/s
h₁ = The height of the roller coaster at the top = 10 m
v₂ = The speed of the roller coaster at the bottom
h₂ = The height of the roller coaster at the bottom = 0 m
g = The acceleration due to gravity = 9.8 m/s² = Constant
By plugging in the values, we get;
M.E. = [tex]M.E._{top}[/tex] = [tex]M.E._{bottom}[/tex]
∴ 1/2·m·v₁² + m·g·h₁ = 1/2·m·v₂² + m·g·h₂
1/2 × (7 m/s)² + 9.8 m/s² × 10.0 m = 1/2 × v₂² + 9.8 m/s² × 0 m
122.5 m²/s² = 1/2 × v₂²
∴ v₂² = 2 × 122.5 m²/s² = 245 m²/s²
v₂ = √(245 m²/s²) = 7·√5 m/s ≈ 15.65 m/s
The speed of the roller coaster at the bottom, v₂ ≈ 15.65 m/s
2) The normal force on the car at the bottom of the roller coaster is given as follows;
[tex]F_N = \dfrac{m \cdot v_2^2}{R} + m \cdot g = m \times \left(\dfrac{ v_2^2}{R} + g \right )[/tex]
Force, F = Mass, m × Acceleration, a
∴ F = m×a
Therefore, the acceleration at the bottom, 'a' by comparison of the general equation for force, 'F', and the normal force, [tex]F_N[/tex], is given as follows;
[tex]a = \left(\dfrac{ v_2^2}{R} + g \right )[/tex]
Plugging in the values for 'v₂²', 'R', ang 'g', gives;
[tex]a = \left(\dfrac{ v_2^2}{R} + g \right ) = \left(\dfrac{ 245}{5} + 9.8 \right ) = \left(49+ 9.8 \right ) = (5 + 1) \times 9.8 = 6 \times 9.8 = 6 \times g[/tex]
a = 6·g = 58.8 m/s²
3) The high acceleration will lead to a very high normal force (equal to 6 times each of their weight) experienced by the passengers with a force
The high acceleration is dangerous and can lead to gravity induced loss of consciousness since it is more than 3·g's
4) Please find attached the force diagram at the bottom of the roller coaster created with Microsoft Visio
5) For the acceleration at the bottom to be 2·g's, we have;
[tex]a = \left(\dfrac{ v_2^2}{R} + g \right )[/tex]
At a = 2·g, we have;
[tex]2 \cdot g = \left(\dfrac{ v_2^2}{R} + g \right )[/tex]
[tex]\therefore 2 \cdot g - g = g = \dfrac{ v_2^2}{R}[/tex]
[tex]R = \dfrac{ v_2^2}{g} = \dfrac{245}{9.8} = 25[/tex]
R = 25 m
The radius at the bottom of the roller coaster should be 25 meters so that only 2·g's is felt
5) The shape of the roller coaster has an increases the radius at the bottom so as to reduce the acceleration of the car
DEFINE NEUTRALIZATION REATION?
Answer:
I would go with when acid and a base react quantitatively with each other. as my answer for that
What is the purpose of this block?
list add value
to end
A. To insert the first value in an array
B. To remove the last value from an array
C. To change a value at a certain index.
D. To add a value to the end of an array
The purpose of a block to add a value to the end of an array.
What is the function that adds an element to the end of an array?The push() is known to be often used to add an element to the end of your array.
The end() function is known to be one that transmit the internal pointer to, and also the outputs, the last factor in the array.
A null or zero value is known to be that which marks the end of an array and it is said to be the very equivalent of the null char for any kind of string
Hence, in the above scenario, The purpose of a block to add a value to the end of an array.
Therefore, option D is correct.
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Answer: The answers is C. To change a value at a certain index
I just took the test
if when you put your shirt in your pants, your shirt is tucked, does that mean when your shirt is over your pants, your pants are tucked into your shirt...?
Answer:
confusing, but yes
Explanation:
your shirt is over you pants I believe.
The Marion County School District is planning to build a new elementary school near a commercial district. Which of the following types of construction companies would be best for the job?
A.Commercial
B.Institutional
C.Residential
D.Industrial
Answer:
B or C
Explanation:
Commercial has to be for things like political and industrial is for making/providing things
Which of the following is NOT an example of a direct cost of workplace injuries?
Medical expenses
Workers’ compensation payments
Cost for legal services
Lost productivity
Answer:
Lost productivity
bruuh its sum werid people on brainly
Answer:
what happend??
Explanation:
What’s the answer to this I don’t understand
Answer:
Electrons are the negatively charged particles of atom. Electrons are extremely small compared to all of the other parts of the atom. So, the negative green particles of this atom are the electrons.
Explanation:
Hope it helps:)
a torque of 24 ft pounds is the result when a force of ______ pounds is applied to a wrench that is 18 inches long.
Answer:
16
Explanation:
The product of feet and pounds is the torque. 18 inches is 1.5 feet.
(1.5 ft)(x lbs) = 24 ft·lbs
x lbs = (24 ft·lbs)/(1.5 ft) = 16 lbs
The force will be 16 pounds applied to an 18-inch wrench to obtain 24 ft·lbs.
Answer:
16
Explanation:
what are the inputs and outputs of a sailboat?
Answer:
sailing ships were the primary means of maritime trade and transportation; exploration across the seas and oceans was reliant on sail for anything other than the shortest distances. Naval power in this period used sail to varying degrees depending on the current technology, culminating in the gun-armed sailing warships of the Age of Sail.Is a desk/table a solid, frame, shell or combination
⚠️I MARK BRAINLIST I AM BRING TIMED PIC INCLUDED⚠️Match the stage of the product development life cycle to the product that best represents it.
building complex systems
car engines employed for more than one model
reusing technology
sophisticated jet airliners
pushing a technology to market
the latest iPhone version
What's the conducting element
between the two ferrules called?
Wire ferrules is the conducting element
between the two ferrules
What are elctrical wire ferrules?An electric wire ferrules are metal tubes which are usually crimped over stranded wire to secure the strands within a screw terminal.
The three major types of wire ferrules are as follows:
Insulated, Non-Insulated Twin InsulatedIn conclusion, wires ferrules is the conducting element between the two ferrules
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What are the transfer of energy for the 6 simple machine? Ex: inclined plane is gravitational potential energy to mechanical energy. What are the rest?
Answer:
I. Inclined plane: GPE to KE.
II. Screw: KE to GPE.
III. Wheel and axle: GPE to KE.
IV. Lever: GPE to KE.
V. Wedge: GPE to KE.
VI. Pulley: GPE to KE.
Explanation:
A simple machine can be defined as a type of machine with no moving parts but can be used to perform work.
Basically, a simple machine allows for the transformation of energy into work. The six simple machines are;
I. Inclined plane: gravitational potential energy to mechanical energy (kinetic energy). It is set at an angle and then used to lift an object.
II. Screw: kinetic energy to potential energy. It is held in position and then used to tighten two or more objects together.
III. Wheel and axle: gravitational potential energy to mechanical energy (kinetic energy). It comprises of two circular objects which aids in the motion of an object such as a car.
IV. Lever: gravitational potential energy to mechanical energy (kinetic energy). It comprises of a pivoted bar at a fixed point (fulcrum) that allows it to be used for lifting heavy objects.
V. Wedge: gravitational potential energy to mechanical energy (kinetic energy). It can be used to split objects into halves.
VI. Pulley: gravitational potential energy to mechanical energy (kinetic energy). It is made up of a wheel and rope which allows force to be multiplied such as in a drawing well.
Energy can be defined as the ability (capacity) to do work. The two (2) main types of energy are;
a. Gravitational potential energy (GPE): it is an energy possessed by an object or body due to its position above the earth.
b. Kinetic energy (KE): it is an energy possessed by an object or body due to its motion.
Can someone help here’s a picture
Answer:
6--b
7--a
8--c
9--f
10--d
Explanation:
6. Miter saw/circular blade with perimeter teeth (b.wood/metal sheet)
7. Miter saw/circular blade with 60+ teeth. (a.ceramic tile)
8. Circular saw/circular blade with abrasive. (c. fine cuts on expensive molding)
9. Reciprocating saw/straight blade, bimetal. (f. solid metal)
10. Circular saw/circular blade with grinding edge, dry. (d. demolition having old nails)
About circular sawA circular saw is a type of cutting tool in the form of a chainsaw with a round and serrated saw blade. With this type of saw, cutting wood becomes easier. Not only that, Circular Saw is also often chosen because of the practicality of its use. In addition, this circular saw is also very practical to remove. So if the saw blade is dull, then you can easily remove it to be sharpened again, or replaced with a new one.
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Which option identifies what process should be used as a model for design in the following scenario?
John is developing a handheld camera, unlike any others that have been developed before. Even though he understands what the final product will be, it still requires further development and modification.
A. engineering design process
B. reverse engineering process
C. structural process
D. brainstorming process
Answer:
A. engineering design process
Explanation:
We are told that John is trying to develop a handheld camera. And that it is unlike any other one that has been developed before.
Now, though he understands what the final product will look like, the camera still required further development and modification. This is simply an engineering design process because it involves finding a need and trying to solve it since he already understands what the final product will be.
What is the wiring machine used for?
A wiring system is a network of wires that links various accessories for the distribution of electrical energy from the supplier metre board to a number of electrical energy-consuming devices.
What is a wiring system?Winding the linear object on a particular workpiece is the automatic wire coiling machine's primary task. The automatic wire coiling equipment is more widely used in daily life and by numerous manufacturers.
A wiring system is a network of wires that connects various accessories for the distribution of electrical energy from the supplier metre board to a range of electrical energy-consuming devices including lamps, fans, and other household appliances via regulating and safety devices.
It is also known as a pull drawing machine while drawing wire. The production of machinery, the processing of metals, petrochemicals, the manufacture of plastics, bamboo and wood products, wire and cable, and other industries all use wire drawing machines, which are common mechanical devices used in industrial applications.
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How can you tell if you need to solve the problem as if the effort is applied at the axle or applied at the wheel if not stated in the problem?
When an axle is exerted, the force on the system decreases while the torque on the axle increases as a result of the effort, which results in
In science, what exactly is a force?
In science, "force" refers to a certain concept. It is quite acceptable to refer to a force of this level as a push or a pull. It's incorrect to say that an object "has in it" or "contains" a force. A force is experienced by one thing from another. The concept of a force makes no distinction between living creatures and inanimate objects. Force is defined as a push or pull that causes the body it is acting on to accelerate. The unit of force in the SI is the Newton.
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Which article of the NEC describes the proper placement of outlets in this type of room? Also, based on the given load what type of outlets are needed for this room?
The Article of the NEC that describes the proper placement of outlets in rooms is the Article 210.
What is NEC?
NEC is the short or acronym for National Electric Code.
For example, with regard to Receptacles, section (210-21(b)) of the Article 100 indicates that a "Receptacle" is a contact device provided at an outlet for the connecting of an attachment plug.
The terms "receptacle" and "receptacles" occur often in the National Electrical Code (NEC).
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Technician A says a sway bar is used to control body lean when cornering.
Technician B says that adding additional leafs to a Leaf Spring increases its
capacity. Which is correct?
Technician B only
Answer:
technician B
Explanation:
because adding leaves increasing capacity
Describe how you would set up a home network with modem internet sharing.
Answer: The term wireless describe telecommunications in which electromagnetic waves carry a signal over a network.
The operation of wireless devices in a home or office that provide reliability for businesses computer user is wireless LAN (local area networks). in this a wireless LAN adapter is fitted in the personal computers.
Where does Henrietta think William might be?
the park
the cemetery
his favorite restaurant
Answer:
The cemetery
Explanation:
Answer:
B.) CEMETERY
Explanation:
Have a nice day!
Which option explains why Tyler is impressed in the following scenario?
Tyler's dishwasher recently stopped working. As he was browsing some of the newer models in the store, he was thrilled with what they offered.
The newer dishwasher models were much less expensive due to recent changes in sustainability.
The efficiency rating of the dishwasher was significantly improved, meaning it would save him money and be more eco-friendly.
Engineers were able to design dishwasher models with superficial changes, making them look more attractive.
Due to newly developed products, there was a much wider variety of energy-efficient dishwashers available.
Answer:
Its B). The efficiency rating of the dishwasher was significantly improved, meaning it would save him money and be more eco-friendly.
Explanation:
On EDG
Answer:
It's B) i just did it in edg
Explanation:
Drivers Education Unit 3
What is the relationship between weather conditions, human-perception time, vehicle-reaction time, and dangerous traffic situations? What can the driver do to make sure he or she is prepared to allow for such situations?
The relationship between weather conditions, human-perception time, vehicle-reaction time, and dangerous traffic situations is known to be one that is interwoven as one cannot do without the other.
What are the factors that affect perception reaction time?A lot of factors have been seen to affect reaction times, such as age, gender, physical fitness and others.
Hence, The relationship between weather conditions, human-perception time, vehicle-reaction time, and dangerous traffic situations is known to be one that is interwoven as one cannot do without the other.
The driver need to be sensitive to make sure he or she is prepared to allow for such situations.
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A gear train has a ratio of 40/24 and the driving gear is turning 100 RPM.
What is the speed of the driven gear in RPM?
Answer:
S2 = 60 RPM.
Explanation:
Given the following data;
Gear ratio = 40/24 (T2 = 40 and T1 = 24).
Speed of driving gear = 100 RPM
To find the speed of the driven gear;
Mathematically, gear ratio in terms of speed (RPM) is given by this formula;
[tex] S_{1} * T_{1} = S_{2} * T_{2} [/tex]
Where;
S1 represents the speed of the driver gear.S2 represents the speed of the driven gear.T1 represents the number of teeth of the driver gear.T2 represents the number of teeth of the driven gear.Substituting into the equation, we have;
[tex] 100 * 24 = S_{2} * 40[/tex]
[tex] 2400 = 40S_{2} [/tex]
[tex] S2 = \frac {2400}{40} [/tex]
S2 = 60 RPM.
Therefore, the speed of the driven gear is 60 revolutions per minute.
If an electric dryer has a nameplate rating of 5.6kva what would you use for the service calculation?
If an electric dryer has a nameplate rating of 5.6kva, Kilovolt-amperes (kVA) is often used for the service calculation.
What is a service calculation?A service calculation is known to be the NEC given way or procedure that is used for sizing service conductors, service equipment, and others so that they can be able to meet the needed electrical demands of a home and office
Note that for a person to calculate dryer load, the use of Kilovolt-amperes (kVA) is often considered as it is equivalent to kilowatts (kW).
Hence, If an electric dryer has a nameplate rating of 5.6kva, Kilovolt-amperes (kVA) is often used for the service calculation.
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Which of these is a unit of heat?
A.
joule
B.
watt
C.
kelvin
D.
joule/kelvin
E.
mole
Answer:
D
Explanation:
Both the joule and the kelvin represent heat. Kelvin is a unit of measurement for temperature and joule is more heat energy.
Answer:
Joules
Explanation:
It's heat
2. It is a measuring instrument used to record the amount of
electrical consumption.
A. clamp meter B. micrometer
B.micrometer
C. steel rule
D. electric meter
Answer:
The correct option is;
D. Electric meter
Explanation:
An electric meter is a metering device that is used for the measurement of the electric power consumption of an electrical powered tools, a living space or a building
Electric meter readings are used by electric utility company to sell electric power to consumers at a given rate such that it allows the electric utility company to receive payment for the total power supplied, and for the consumer to regulate the amount of power consumed
The electric meters are usually calibrated in kilowatt hour (kWh) and prepaid meter displays the amount of units of power bought, while post paid meters are usually read once each billing period which is usually one month.
duties of school principal
The duties of school principal are those responsibilities or obligation he must carry out for proper management of the school. Some of the duties are as follows:
Supervision of instructionSupervision of Curriculum Development and ImprovementSupervision of curricula rand Co-curricular ActivitiesSupervision of School HostelWhat is school administration?School administration can simply be defined as process which involves the management of all the school operations and activities.
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Why are the main cables of the Golden Gate Bridge made of numerous smaller cables?
Answer:
The main cables of the Golden Gate Bridge are made of numerous smaller cables because by combining several thousand in number of smaller cables, each having a diameter which is approximately the diameter of a pencil, into the required cable diameter dimensions, the flexibility, strength, resistance to cracking, rotation resistance, crushing resistance and fatigue resistance of the main cables are increased, and failure of a few strands in a multi-stranded cable is more likely to be detected before catastrophic failure takes place than in a single cable
The properties of strength and flexibility that the cable provides are required so that the bridge can better cushion the seismic turbulence of the water and strong wind energy at the bay of San Francisco, the location of the bridge
Explanation: