Gaps between them to account for thermal expansion.

Assignment Help Physics
Reference no: EM13551745

Steel rails 25.0m long are laid end to end with gaps between them to account for thermal expansion. Part A If the track is laid when it's 18 degrees C, how large should the gaps be to allow temperatures up to 39 degrees C? Part B If the track is laid using the gaps you found in part (a), how large will the gaps be on a -18 degrees C winter morning? Express your answers to two significant figures and include the appropriate units.

Reference no: EM13551745

Questions Cloud

Small glider and big glider both start from rest : A small glider and a big glider both start from rest and are pushed with the same constant force F along a horizontal, frictionless surface. After each glider has traveled a distance d, which of the following statements is rue ?
Slide down a frictionless ramp vertical height : A block of mass m starts from rest at the top of a ramp of vertical height h . The block slides down frictionless ramp and reaches a speed v at the bottom . if the same bock were to reach a speed 3v at the bottom , it would need to slide down a fr..
A window air conditioner consumes : A window air conditioner consumes 1500 W of electric power and has COP = 3.7. If it runs continuously for 18h , how much heat gets removed from the house? Express your answer to two significant figures and include the appropriate units.
Carnot cycle operating in a room-temperature : Find the maximum temperature in a Carnot cycle operating in a room-temperature (23 degrees C) environment if its Carnot efficiency is 0.2. Express your answer using one significant figure. TH = ? K
Gaps between them to account for thermal expansion. : Steel rails 25.0m long are laid end to end with gaps between them to account for thermal expansion. Part A If the track is laid when it's 18 degrees C, how large should the gaps be to allow temperatures up to 39 degrees C?
Whats the balloons new radius : Suppose you have a spherical balloon filled with air at room temperature and 1.0 atm pressure; its radius is 12cm . You take the balloon in an airplane, where the pressure is 0.90 atm. If the temperature is unchanged, what's the balloon's new radius?..
Egg incubation is important determinant of sex of reptiles : Egg incubation is an important determinant of the sex of many reptiles. In a study of loggerhead turtles 100% of the hatchings from eggs incubated at 26°C were male, while 100% of those from eggs incubated at 32°C were female.
Find the hairless cats temperature in degrees : A hairless cat's body temperature is 7.5 degrees C higher than a human's. Part A: Find the hairless cat's temperature in degrees C. Part B: Find the hairless cat's temperature in degrees F. Express your answers using one decimal place and include the..
Compute the expected sea level rise for the projected : Compute the expected sea level rise for the projected 4°C mean global temperature rise anticipated by 2100. The average depth of the ocean is 3790 m, but you will not consider this whole depth to be expanding. Instead you will only consider the ex..

Reviews

Write a Review

Physics Questions & Answers

  Q1 a rocket moves with a velocity of 0818c to the right

q1. a rocket moves with a velocity of 0.818c to the right with respect to a stationary observer a. an observer b moving

  Estimate the angular frequency of the motion

The length of a simple pendulum is 0.77 m and the mass of the particle (the "bob") at the end of the cable is 0.25 kg. What is the angular frequency of the motion

  The angular acceleration of the cylinder

A cylinder is 0.10 m in radius and 0.20 in length. Its rotational inertia, about the cylinder axis on which it is mounted, is 0.020 kg . m2. A string is wound around the cylinder and pulled with a force of 1.0 N. The angular acceleration of the cylin..

  What is the mass of the sled

An airplane is sent on a rescue mission to help a stranded explorer near the South Pole. The plane cannot land, but instead drops a supply package of mass m = 58 kg while it is flying horizontally with a speed of vp = 116 m/s. What is the mass of ..

  Calculate the speed of the protons at infinity

Use conservation of energy to calculate the speed of the alpha particle at infinity. m/s (e) If the two protons are released from rest and the alpha particle remains fixed, calculate the speed of the protons at infinity. m/s

  What is the uncertainty of the momentum in this direction

If the x position of a particle is measured with an uncertainty of 1.00×10-10 m, then what is the uncertainty of the momentum in this direction

  What are the frequency and rms strength of electric field

In an EM wave traveling west, the B field oscillates vertically and has a frequency of 80.0 kHz, What are the frequency and rms strength of the electric field

  Determine the total charge on spherical shells

Two identical conducting spherical shells S1 and S2 carry charges Q1 and Q2, respectively, Determine the total charge on S1 and S2 after they are separated

  Find the length of the silver bar

A bar with cross-sectional area A = 0.5cm2 is used to conduct heat between two regions at different temperature. The bar is made of silver, k = 417 W/(m·K). Find the length of the silver bar

  What is this speed in meters per second

Bicyclists in the Tour de France reach speeds of 34.0 miles per hour (mi/h) on flat sections of the road. What is this speed in meters per second

  Find how could you distinguish whales songs from other songs

Discuss the possible changes of whales' songs as a result of temperature, wave speeds, and etc. How could you distinguish the whales' songs from other songs

  How much does it miss its mark due to this coriolis force

Cosnider Children playing on a merry go around that is 6m in diamter, turning at 10 revelutions per minute. What will the Coriolis Force observed on a 600 gram basketball  thrown with a horizontal speed of 5m/s? It is thrown between two children on o..

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd