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3 years ago

Which of the following explains why trucking is the most widely used transportation method?

Engineering

1 answer:

True [87]3 years ago

6 0

Answer:

Trucks are the fastest mode of transportation

Explanation:-Means of transport is a term used to distinguish between different ways of transportation or transporting people or goods. The different modes of transport are air, water, and land transport, which includes Rails or railways, road and off-road transport. Other modes also exist, including pipelines, cable transport, and space transport. Human-powered transport and animal-powered transport are sometimes regarded as their own mode, but never fall into the other categories. In general, transportation is used for moving of people, animals, and other goods from one place to another. The means of transport, on the other hand, refers to the (motorized) vehicles necessary for transport according to the chosen mode (car, airplane, ship, truck and rail). Each mode of transport has a fundamentally different technological solution, and some require a separate environment. Each mode has its own infrastructure, vehicles, and operations.

****†********************MD.Tashin*************************

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You are designing a geartrain with three spur gears: one input gear, one idler gear,and one output gear. The diametral pitch for

Mrac [35]

Answer:

The appropriate number of teeth of the smallest gear should is 58 teeth.

Explanation:

The given parameters include;

The diametral pitch = 16

Number of gears = 3

Diameter of the input gear = 2 × diameter of the idler gear

Diameter of the input gear = 3 × diameter of the output gear

Height of footprint = 22 in.

Length of footprint = 15 in.

Let the size of the output gear = X

Therefore, the input gear = 3·X

The diameter of the idle gear = 2·X

Therefore, total width of the gear train = X + 2·X + 3·X = 6·X

Where 6·X = 22, X = 22/6 = 11/3 in.

Since the diametral pitch = 16 then we have;

$Diametral \, Pitch = \frac{Number \, of \, teeth}{Pitch \, diameter}$

$\therefore Diametral \, Pitch \, of \, the \, smallest \, gear =16 =\frac{Number \, of \, teeth \, of \, the \, smallest \, gear}{\frac{11}{3} }$

Hence, number of teeth of the smallest gear = 16 × 11/3 = 176/3 = $58\tfrac{2}{3}$

The appropriate number of teeth of the smallest gear should be 58

From which we have the diameter of the smallest gear = 58/16 = 3.625

The diameter of the input gear is then 3 × 3.625 = 10.875 in.

The diameter of the idler = 2 × 3.625 = 7.25 in.

The appropriate number of teeth of the smallest gear should = 58 teeth.

4 0

3 years ago

A murder in a downtown office building has been widely publicized. You’re a police detective and receive a phone call from a dig

BaLLatris [955]

Answer:

Considering the plain view doctrine, which is an exception to the warrant requirement of the Fourth Amendment, is applied by law enforcement officers and courts who can seize evidence of a crime without a warrant, if the officer observes the evidence in plain view.

Explanation:

For any digital information related to a murder case that has been seized under the plain view doctrine to be used to convict you of a crime, has to comply with three conditions:

1. The digital evidence must be in out in the open, and easily observable by the officer, this is what "plain view" refers to.

2. The officer must have a legal right to be where he got the information related to the case.

3. The 'incriminating' character of the information must be a clear hint of the murder to fall under the plain view doctrine and the officer´s experience will help him determining whether the information is evidence or not, upon probable cause related to a crime.

7 0

3 years ago

Read 2 more answers

A step-up transformer has 20 primary turns and 400 secondary turns. If the primary current is 30 A, what is the secondary curren

-BARSIC- [3]

150
A
Explanation:
V
s
V
p
=
N
s
N
p

(
1
)
N
refers to the number of turns
V
is voltage
s
and
p
refer to the secondary and primary coil.
From the conservation of energy we get:
V
p
I
p
=
V
s
I
s

(
2
)
From
(
1
)
:
V
s
V
p
=
900
00
3
00
=
300
∴
V
s
=
300
V
p
Substituting for
V
s
into
(
2
)
⇒
V
p
I
p
=
300
V
p
×
0.5
∴
I
p
=
150
A
Seems a big current.

3 0

3 years ago

Air at 40C flows over a 2 m long flat plate with a free stream velocity of 7 m/s. Assume the width of the plate (into the paper)

mezya [45]

Complete Question

Air at 40C flows over a 2 m long flat plate with a free stream velocity of 7m/s. Assume the width of the plate (into the paper) is 0.5 m. If the plate is at a co temperature of 100C,find:

The total heat transfer rate from the plate to the air

Answer:

$q=1.7845$

Explanation:

From the question we are told that:

Air Temperature $T_1=40c$

Length $l=2m$

Velocity $v=7m/s$

Width $w=0.5$

Constant temperature $T_t= 100C$

Generally the equation for Total heat Transfer is mathematically given by

$q=hA(T_s-T_\infty)$

Where

h=Convective heat transfer coefficient

$h=29.9075w/m^2k$

Therefore

$q=h(L*B)(T_s-T_\infty)$

$q=29.9075*(2*0.5)(100+273-(40+273))$

$q=1794.45w$

$q=1.7845$

5 0

3 years ago

What are the maximum weights for single, tandem and 5-axle combinations?

belka [17]

Hauling Vehicles that include a semitrailer manufactured prior to or in the model year of 2024, and registered in Illinois prior to January 1, 2025, having 5 axles with a distance of 42 feet or less between extreme axles, may not exceed the following maximum weights: 20,000 pounds on a single axle; 34,000 pounds

7 0

3 years ago