Question

A continuous concrete road pavement was laid in 15 m sections with expansion joints, at the end of each section, measuring10 mm at 10°C.

What will be the size of the joint when the temperature of the concrete reaches 50°C?

Answer #1

The concrete sections of a certain superhighway are
designed to have a length of 24.0 m. The sections are poured and
cured at 10.0°C. What minimum spacing should the engineer leave
between the sections to eliminate buckling if the concrete is to
reach a temperature of 45.0°C? (Note: If applicable, Table 1
is available for use in solving this problem

A 3.0-m rope is made of three 1.0-m-long sections. The first and
last sections are made from rope with μ1 = 100 g/m, and
the middle section is made from rope with μ2 = 400 g/m.
When a pulse is produced at one end of the rope, it reaches the
other end of the rope after 0.30 s.
A. Determine the speed of the transverse waves in the first and
last sections of the rope. Express your answer with the...

You are given the job of designing a bridge that is to be made
of concrete slabs that rest on a steel support frame. The total
length of the bridge is 324 m, and you want to be sure that the
expansion joints are sufficiently large. If the temperature
increases by 22°C, what is the difference in the new lengths of the
concrete and steel components of the bridge?
concrete
m
steel
m
Which of these components will have the...

You are given the job of designing a bridge that is to be made
of concrete slabs that rest on a steel support frame. The total
length of the bridge is 304 m, and you want to be sure that the
expansion joints are sufficiently large. If the temperature
increases by 28°C, what is the difference in the new lengths of the
concrete and steel components of the bridge?
concrete _____m
steel ______m
Which of these components will have the...

You are given the job of designing a bridge that is to be made
of concrete slabs that rest on a steel support frame. The total
length of the bridge is 304 m, and you want to be sure that the
expansion joints are sufficiently large. If the temperature
increases by 28°C, what is the difference in the new lengths of the
concrete and steel components of the bridge?
concrete _______m
steel ______m
Which of these components will have the...

(A) concrete highway is built of slabs 11 m long (15 ∘C). How
wide should the expansion cracks between the slabs be (at 15 ∘C) to
prevent buckling if the range of temperature is -30∘C to +46
∘C?
Express your answer to two significant figures and include the
appropriate units.
(B) Calculate the rms speed of helium atoms near the surface of
the Sun at a temperature of about 7000 K.
Express your answer to two significant figures and include...

A car is traveling at 15 m/s on a horizontal road. The brakes
are applied and the car skids to a stop in 4.0 s. The coefficient
of kinetic friction between the tires and road is:
Select one:
a. 0.38
b. 0.69
A ball is thrown straight up with a speed of 36.0 m/s. How long
does it take to return to its starting point?
Select one:
a. 7.20 s
b. 10.2 s
c. 14.7 s
d. 11.0 s
e....

Q1.
An engineer is building a structure made from concrete and copper.
The structure includes
concrete posts with diameter 20.0 cm and copper rings with
diameter 19.95 cm, as measured at
16 °C. What is the minimum temperature that the copper and
concrete must be heated to in
order for the copper ring to slip over the concrete
post?
Q2. An ice cube with temperature 0°C and weighing 20 g is
dropped into 100 g of boiling water.
When the...

Inkjet printers can be described as either continuous or
drop-on-demand. In a continuous inkjet printer, letters are built
up by squirting drops of ink at the paper from a rapidly moving
nozzle. You are part of an engineering group working on the design
of such a printer. Each ink drop will have a mass of
1.2×10−8 g . The drops will leave the nozzle and travel
toward the paper at 50 m/s,passing through a charging unit that
gives each drop...

A 1000-kg sports car is moving north at speed 15 m/s on a level
road when it collides with a 2000-kg truck driving east on the same
road at speed 10 m/s. The two vehicles remain locked moving
together after the collision at the origin of x-y plane. Assume
that the rolling friction is too small to be ignored.
A) explain what type of collision it is
B) indicate the vector momentum by showing its magnitude and the
(direction) angle...

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