![subject](/tpl/images/cats/fizika.png)
In the construction of railroads, curvature of the track is measured in the following way. First a 100.0-ft-long chord is measured. Then the curvature is reported as the angle subtended by two radii at the endpoints of the chord. (The angle is measured by determining the angle between two tangents 100.0 ft apart; since each tangent is perpendicular to a radius, the angles are the same.) In modern railroad construction, track curvature is kept below 1.30°. What is the radius of curvature of a “1.30° curve”?
![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 06:10
Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 07:50
Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 10:50
Two rigid transformations are used to map δhjk to δlmn. the first is a translation of vertex h to vertex l. what is the second transformation? a reflection across the line containing hk a rotation about point h a reflection across the line containing hj a rotation about point k
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 11:00
A2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kn. what is the frequency of the fundamental mode of vibration of this wire?
Answers: 3
You know the right answer?
In the construction of railroads, curvature of the track is measured in the following way. First a 1...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 29.08.2019 21:00
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 29.08.2019 21:00
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 29.08.2019 21:00
![question](/tpl/images/cats/mat.png)
Mathematics, 29.08.2019 21:00
![question](/tpl/images/cats/mat.png)
Mathematics, 29.08.2019 21:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 29.08.2019 21:00
![question](/tpl/images/cats/fizika.png)
Physics, 29.08.2019 21:00
![question](/tpl/images/cats/mat.png)
Mathematics, 29.08.2019 21:00
![question](/tpl/images/cats/geografiya.png)
![question](/tpl/images/cats/istoriya.png)
History, 29.08.2019 21:00
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/geografiya.png)
Geography, 29.08.2019 21:00
![question](/tpl/images/cats/fizika.png)
Physics, 29.08.2019 21:00
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)