The intensity level in a truck is 97 dB. Find sound intensity, is the question asked by my professor...?
Intensity level: I(dB) = 10 log(I/Io) The standard threshold of hearing intensity: Io = 10^-12 W/m² I(dB) = 97 dB = 10 log(I/10^-12) 9.7 = log(I/10^-12) Take the antilog of both sides of above equation: 10^9.7 = I/10^-12 I = 10^-12 (10^9.7) = 10^-2.3 = 5x10-³ W/m², ...=> sound intensity in W/m²
What size hardware for an 8.25 deck and best street skating trucks?
The hardware is based on the thickness of the deck, trucks and risers; not the width of the board. All grip tape destroys your shoes. MOB is pretty grippy Puma is my favorite shoe brand, followed by Supra
Why are pickup trucks sold with 6-foot beds instead of 8-foot beds?
1973 Datsun 620 - 6-Foot Bed1980 Plymouth Arrow Pickup - 7-Foot Bed1993 Dodge D150 Pickup - 8-Foot BedFor decades, going back to the 30’s, 40’s and 50’s, American pickup trucks came standard with a 6-foot long bed, with an 8-foot bed being optional.The reason for 6 feet has several reasons, but perhaps the best is the fact that it’s long enough for hauling 90% of what a person needs to haul in a pickup. With the tailgate down, it will safely haul 8 foot pieces of lumber, tools, spare tires, small parts and small livestock.For ranches, the standard hay bale size is 16x18x48 inches, so a six foot bed will haul exactly 4 hay bales per stacked level, with the tailgate closed.Fast forward to modern America and the rural pickup becomes urbanized. That means it spends a lot more time hauling kids to school than lumber and hay around the countryside. For occasional hauling, a 6-foot bed makes sense with a longer, 4-door cab. It helps keep the wheelbase and turning radius short for maneuvering in parking lots and driveways. Many urban dwellers will use the bed for a couple bikes, some camping coolers or some potting soil from the nursery.To compensate for the lack of bed length, most manufacturers today build their trucks with extremely rugged tailgates, designed to hold substantial weight. They may also have flip-down extension gates. That way if you’re hauling a dirt bike with the tailgate open, it will safely support the load.For those who really love an 8-foot bed (like me,) you can still order a truck with a full-size bed. If you get these with a 4-door cab, you’re looking at a really long truck, which won’t fit in standard parking spaces, but at least you can haul 4x8 pieces of plywood with the tailgate up…
What is the average size of a food truck (in square feet)?
The current maximum size of a lorry on UK roads is 41 tonnes.The maximum trailer width is 2.55m, and with tautliner loading the load width is likely to be as much as 2.53m internally. For a refrigerated trailer that will be about 2.45m internally.The lengths of trailer used are limited to either 7m or 12m depending upon the laden weight, which with insulation can be taken as 6.9m or 11.9m respectively. I will use the limit lengths because economics implies that most trucks are the biggest permitted.So the loading space will be 16.9m^2 or 29.1m^2, which comes out at 181.9 or 313.2 square feet, or maybe a bit less with more recent high-efficiency (better insulated) refrigerated trailersin the 1960s My father had 3 mobile shops which were 1.8m wide and 4.5m long, so a bit less than 8 square metres inside, call it 85 square feet.Why do you ask?see As big as the shop (C) Bob Harvey
What is the best transmission to use for a Chevy 350 engine?
First, you have to determine the torque output of the engine, since the gearboxes are rated by this number. Horsepower rating is important too, but torque is what will eat your clutches up or otherwise snap parts within the unit.The 4L60 can handle 360 ft lbs of torque and 325 horsepower. Its a good all rounder for lightly built 350’s and doesn’t require any electronics to operate. Its strictly controlled by cable hooked to the throttle so its an all in one solution, and you get overdrive and a good low first gear. It works well in most applications.The older 3 speed autos could take a bigger beating. The TH400 was rated for 450 ft lbs.The powerglide 2 speed can be built to withstand torque output of quadruple digits, which is why racers still use them despite having only two speeds.There are many other choices, but the main other factors are:Vehicle weightRear end ratio(some of the manuals have relatively high first gear ratios, since they were intended for cars with low rearends)Physical sizeElectronic shift or notNumber of gears(the more the better if your engine has a narrow torque band)Comfort(if you arent a racer, hard shifts may not be an enthralling idea)Cost.
Physics: Forces and Friction?
since force of friction = Nµ and the force of the acceleration of the truck = (m)(a), we can use that to solve for the force of friction that is applied when the truck accelerates. You can visualize this by drawing a free body diagram. Friction always acts in the opposite way that the object is moving, so therefore the force of friction must equal the force of the acceleration. Force of Friction [F(f)] = Force of the truck acceleration [F(truck)] F(f) = F(truck) F(f) = ma F(f) = (128N / 9.8)(2.1) F(f) = 27.42857 N You must divide the given mass of the crate by 9.8 because the units is N, which means it is already multiplied by the gravity constant of 9.8. Divide it by 9.8 to get the mass in kg. The maximum acceleration of the truck is the point at which the crate begins to slip. Therefore that point is at the max force of friction. F(f) = F(truck) Nµ = ma mgµ = ma 128(0.27) = (128 / 9.8)a 34.56 = 13.0612a 2.646 m/s^2 = a Enjoy! Message me if it doesn't work.
A truck covers 35.0 m in 8.60 s while smoothly slowing down to final speed of 2.50 m/s. Find original speed (m/s). Find acceleration.?
Let’s use the following equation to determine the truck’s average velocity. d = v * t 35 = v * 8.60 v = 35 ÷ 8.60 This is approximately 4.07 m/s. Average velocity = ½ * (vi + vf) ½ * (vi + 2.5) = 35 ÷ 8.60 vi + 2.5 = 70 ÷ 8.60 vi = (70 ÷ 8.60) – 2.5 This is approximately 5.64 m/s. In 8.60 seconds, the car’s velocity decreased from this velocity to 2.5 m/s. Let’s use the following equation to determine its acceleration. vf = vi + a * t 2.5 = [(70 ÷ 8.60) – 2.5] + a * 8.60 a * 8.60 = 2.5 – [(70 ÷ 8.60) – 2.5] a = (2.5 – [(70 ÷ 8.60) – 2.5]) ÷ 8.6 The acceleration is approximately -0.365 m/s^2.
What is the size of a standard parking spot?
From Wikipedia:In North America, the width of angled and perpendicular parking spaces usually ranges from 2.3 to 2.75 metres (7.5–9.0 ft). For example, normal parking spaces in the city of Dallas, Texasare 8.5 feet (2.6 m) wide, while compact spaces are 7.5 feet (2.3 m) wide.Because the boundary between parking space and driving area is not always well-defined, the length of a parking space is more difficult to establish. However, most angled and perpendicular spaces are considered to be between 3.2 and 5.5 metres (10–18 ft) in length. Though, in the United States, a parking space 10 feet (3.0 m) deep is uncommon and most parking spaces will be within 16 to 20 feet (4.9–6.1 m), with 19 feet (5.8 m) feet deep being the standard DOT recommended depth for standard perpendicular parking.Parallel parking spaces are typically cited as being approximately 2.76 metres (9.1 ft) wide by 6.1 metres (20 ft) long.During construction, the specific dimensions of a parking space are decided by a variety of factors. A high cost of land will encourage smaller dimensions and the introduction of compact spaces.[5] Many garages and parking lots have spaces designated for a Compact car only. These spaces are narrower than traditional spaces, thus allowing more cars to park.According to French standard “Norme NF P 91-100”, minimum width of parking spaces range from 2.20 to 2.30 metres (7.2–7.5 ft) (See fr:Marquage du stationnement en France). Narrow parking spaces such as in Vevey, Switzerland might make opening the door difficult in a larger vehicle.Larger cars are an issue when the size of the parking spot is fixed. Automobile associations warn of this issue.A Swiss Association regulating parking space wants to consider this issue for 2016.In the United Kingdom the recommended standard Parking bay size is 2.4 metres (7.9 ft) wide by 4.8 metres (16 ft) long. Recently there has been some controversy about most UK parking spaces being too small to fit modern cars, which have grown significantly since standards were set decades ago.
Are 6-cylinder 4.0 L engines better than 8-cylinder ones?
It all depends on what you want from an engine. For a given displacement, more cylinders gives more horsepower, and less torque. This is because each power stroke is smaller (less torque), yet the strokes are shorter, giving you a higher RPM and therefore more total horsepower (torque x RPM). The main limitation on RPM is piston speed, and having more cylinders means that each cylinder has to stroke a smaller length, which means the piston doesn’t have to move as fast to complete the stroke per a given RPM rate. A 4.0L V8 will be a high strung, high-RPM engine, which will give great horsepower (think Lamborghini V8), but little torque, and all that power will be at high RPM’s. A 4.0L I6 (like a Jeep engine) won’t give a lot of horsepower, but it will give a decent amount of torque, and it will be available at low RPM’s. This makes it ideal for use in trucks. I I had a sports car, a 4.0L V8 would be great, for driving fast. In a truck, it would be less than ideal, since it just doesn’t have the torque to move any decent load. A 4.0L six would be okay, if not fast. It would be less than ideal in a car, since it can’t rev very high (stroke is too long), but it would work. An inline 6 is also inherently balanced, meaning smooth running, which is more comfortable, as well as life-prolonging (vibration is a big killer for mechanical things, especially cars). There are also fewer bearings, and a smaller piston/cylinder contact area, which means less friction, less heat, more efficiency (I’m assuming you’re talking about I-6’s, due to the famous 4.0L Jeep I-6; a V-6 is less so, since it needs balance shafts to run smoothly, canceling out some of the benefits). All said, I’d call a 4.0L inline-6 a better engine, more widely useful and effective, than a 4.0L V8, but I freely admit, I’m somewhat biased. I think the I6 is the best engine all-around, and am not afraid to admit it. Not that I don’t like I4’s and V8’s (I’ll even stomach a V-6 if I must), but the I-6 sits right in the middle, and has the natural beauty of being naturally balanced (a trait which is only shared by the V-12, which is simply two I-6’s connected together).
7.5 inch Deck or 8 inch Deck?
Hi, I have been using a 7.5 Inch deck for 2 years now, i am mainly a street skater but i noticed alot of the big street skaters for example Eric Koston and Chris Cole all use 8 Inch decks, I would of thought they would use as thin as possible to get the most egile and flippable board. Can anyoen come up with soem reason why they woudl use 8 inch?