Answer: Find the answer in the explanation
Explanation:
Helmets are manufactured by the use of different categories of polymer. The common material used for manufacturing of helmets are:
1. Polycarbonate
2. Styrofoam
3. Foam
4. Acrylic and polycarbonate
5. Nylon
All the polymer used for the manufacturing of helmets fall under synthetic and semi synthetic categories of polymer.
The styrofoam is classified under addition polymerization. While the nylon is classified under condensation polymerization.
The low density polythene used is classified as branch chains polymer. While the polycarbonate is of high tensile strength with strong mechanical properties.
1. Research has found that lap/shoulder safety belts, when used, reduce the risk of fatal injury to front-seat
passenger car occupants by
percent.
A. O 25
B. O 35
C. O 45
D. O 55
The correct answer is C. 45
Explanation:
Lap/shoulders safety belts are essential to reduce the risk of injuries and death during car accidents because they keep passengers in the seat and avoid ejection, which might lead to more serious injuries. This has been widely studied around the world, including studies by the National Center for Statistics and Analysis in the U.S. that determined safety belts decrease the risk of serious or fatal injuries by 45%. Also, similar results were reported in other research studies that collected information about accident cars, the injuries passengers suffered, and whether the front-seat passengers had a safety belt on.
Answer:c
Explanation:
What does it take to launch a rocket in space?
What is an aqueduct?
Water channel
Species of duck
Ancient structure
Water park
John Smeaton built a lighthouse out of lime after previous engineers built them out of wood. What part of the engineering design process is this? *
25 points
Iterate
Brainstorm
Identify
Define
Which of the following is the first city with a working sewer system?
25 points
NYC
London
Milan
Beijing
What thoughts and feelings have you had about the police violence
against George Floyd?
Answer:
fear. IF they can do that to a black man then they can do that to me (a black lesbian woman) I am truly terrified for my family and myself
Explanation:
What process does a professional use to find an object’s position with respect to the camera?
A. segmentation
B. pose estimation
C. detection
D. tracking
E. egomotion
Answer:
"D
Explanation:
The process that does a professional use to find an object’s position with respect to the camera is tracking. The correct option is D.
What is tracking?Any shot where the camera moves beside the subject being filmed while moving forward, backward, or side to side is a tracking shot.
The word refers to a scene in cinematography when the camera is mounted on a dolly and then moved along rails to resemble a train track.
A "tracking shot" is a recording in which the camera moves in sync with the action being captured.
Dolly shots and tracking shots can sometimes be confused, but you can tell them apart by the path they follow. Tracking pictures typically move with the subject along the horizontal axis.
Tracking is the technique used by experts to determine an object's location in relation to the camera.
Thus, the correct option is D.
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What is the type of the car which has no gasoline as a fuel, but hydrogen or water?
An electric car. Probably, I don't know, am I correct? please give me brainliest if I am.
Select the best answer to the questo
3. Technician A says the four strokes of the four-stroke cycle are intake, compression, power, and exhaust Technician saya most engines rotate clockwise as viewed from the rear flywheel) end of the engine. Who is correct?
A Nother Technician A no
B. Both Technicians A and B
C. Technician A
OD. Technician
Technician A is correct as the four strokes make up the complete combustion cycle in internal combustion engines.
Technician A is correct in stating that the four strokes of the four-stroke cycle are intake, compression, power, and exhaust. These four strokes make up the complete combustion cycle in internal combustion engines.
Technician B's statement about most engines rotating clockwise as viewed from the rear flywheel end of the engine is not relevant to the question about the four-stroke cycle.
The rotation direction of the engine does not affect the order or definition of the four strokes.
Therefore, Technician A is correct.
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What is the mechanical advantage of a wheel barrel that is 4cm long with 0.75m between the wheel and the center of the load?
Answer:
The mechanical advantage = 4/75
Explanation:
A wheel barrel is a second class as the effort is placed further from the point of fulcrum than the point of action of the load
The parameters given are;
Length of wheel barrel = 4 cm
Distance between wheel and center of load = 0.75 m
Therefore, we have the mechanical advantage, MA given as follows;
[tex]MA = \dfrac{F_{o}}{F_{i}} = \dfrac{L_{i}}{L_{o}}[/tex]
[tex]{F_{o}}[/tex] = Output force
[tex]{F_{i}}[/tex] = Input force
[tex]{L_{o}}[/tex] = Distance from output force = 0.75 m
[tex]{L_{i}}[/tex] = Distance from input force = 4 cm = 0.04 m
Therefore;
[tex]MA = \dfrac{0.04}{0.75} = \dfrac{4}{75}[/tex]
The mechanical advantage MA = 4/75 = 0.0533
Therefore, more force (75/4 × the load) will be required to lift a given load.
____accelerates the rusting process A lubricant B improper storage CMoisture DOil
Answer:
i would go with-B
Explanation:
because Exposure to the elements has resulted in the formation of the blue-green patina
What is mechanical Advantage in you own words?
Answer:mechanical advantage is the ratio produced by a machine to the force applaide to it.
Explanation:
Answer:
Explanation:
Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system. The device preserves the input power and simply trades off forces against movement to obtain a desired amplification in the output force. The model for this is the law of the lever.
Hogden is conducting an experiment to determine how much force it takes for a nail to puncture a tire, causing a flat. He uses five identical nails and tests them on five identical tires filled with equal amounts of air. He hits each nail one time, applying a different force each time. His results are recorded below. Trial Force (lbs) Result nail 1 15.0 no flat nail 2 30.0 no flat nail 3 45.0 no flat nail 4 60.0 flat nail 5 75.0 flat What can Hogden conclude from his results? A. It takes exactly 60.0 pounds of force on the nail to cause a flat. B. It takes exactly 45.0 pounds of force on the nail to cause a flat. C. It takes between 60.0 and 75.0 pounds of force on the nail to cause a flat. D. It takes between 45.0 and 60.0 pounds of force on the nail to cause a flat.
Answer:
B
Explanation:
Answer:
D. It takes between 45.0 and 60.0 pounds of force on the nail to cause a flat.
Explanation:
Did the Study Island.
plz can one of you ask a question and give me brainliest plz guys I will give you 100 points
Answer:
sure, go to my profile and look at my questions
Explanation:
Answer: okay!
Explanation:
You test the lighting for the first time none of the new lights work, but the old ones do. What should you do first?
Answer:
I think you should make sure that the circuit is closed
Explanation:
storage silos can be used to store grains.The silos are 15'wide.The larger silo is 18'10 tall and the shorter is 10'10 tall.NOT INCLUDING THE DOME.how much grain can you store these two silos,combined.Give your answer in cubic feet,to the nearest 0.01.
Answer:
The amount of rains that can be stored in the two silos combined is 5242.53 ft³
Explanation:
The parameters given are;
Diameter, D, of the silos = 15 feet
Height, h₁, of the larger silo = 18 feet 10 inches = 18.83 feet
Height, h₂, of the shorter silo = 10 feet 10 inches = 10.83 feet
The volume, V, of the cylindrical shape is given by the formula;
Volume = Area of base × Height
[tex]Area \, of \, the \, base = \pi \times \dfrac{D^{2}}{4}[/tex]
[tex]\therefore Volume = \pi \times \dfrac{D^{2}}{4}\times h[/tex]
Therefore, for the larger silo, we have;
[tex]Volume, V_1 = \pi \times \dfrac{D^{2}}{4}\times h_1[/tex]
[tex]V_1 = \pi \times \dfrac{15^{2}}{4}\times 18.83 = 3328.12 \ ft^3[/tex]
for the shorter silo, we have;
[tex]Volume, V_2 = \pi \times \dfrac{D^{2}}{4}\times h_2[/tex]
[tex]V_2 = \pi \times \dfrac{15^{2}}{4}\times 10.83 = 1914.41\ ft^3[/tex]
The amount of rains that can be stored in the two silos combined = 3328.12 ft² + 1914.41 ft² = 5242.53 ft².
This circuit is?
A) Open and On
B) Open and Off
C) Closed and On
D) Closed and Off
I NEED HELP ASAP
establishes general guidelines concerning licensing and vehicle
10. The
registration.
A. National Highway Safety Act
B. National Traffic and Motor Vehicle Safety Act
C. Uniform Traffic Control Devices Act
Answer:
A. National Highway Safety Act
Explanation:
The National Highway Safety Act establishes general guidelines concerning licensing, vehicle registration and inspection, and traffic laws for state regulations. The act was made in 1966 to reduce the amount of death on the highway as a result of increase in deaths by 30% between 1960 and 1965
National Traffic and Motor Vehicle Safety Act regulates vehicle manufacturers by ensuring national safety standards and issuance recalls for defective vehicles
Uniform Traffic Control Devices Act defines shapes, colors and locations for road signs, traffic signals, and road markings
ANSWER ASAPP!!!! EASY!!
LIST 3 REASONS WHY ENGINEERING IS A GOOD CAREER CHOICE
Well for one when you choose engineering as your future career ti will open up a lot of career paths that have high paying jobs and the jobs will be in demand.
Your pay will obviously be higher than the minimum wage so that's always good.
also this field requires us to solve most of the problem that have impact on all of us.
