Mathematics, 15.02.2020 04:53 gennhill14

A beam used in construction is made of steel, which has a coefficient of linear expansion of 1.3 × 10-5 K-1. The beam is 25 m long at a temperature of 1630 K when it is made. As it cools, the temperature of the beam decreases to 295 K.

1.

What is the change in the length of the beam due to cooling?

2.

If the mass of the steel beam is 325 kg and the specific heat capacity of steel is 490 J/kg-K, how much energy did the steel beam lose due to cooling? (Use a positive value for the amount of energy.)

Answers: 1

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 13:40, kps26pd2mea

The cash price of a television is $580.the hire-purchase price of the television is $865.the hire-purchase price is an initial deposit of n% of the cash price and 6 equal monthly payments of $120.find the value of n.

Answers: 1

continue

Mathematics, 21.06.2019 23:00, hd14yarnell

Is there a direction u in which the rate of change of f(x, y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.

Answers: 2

continue

Mathematics, 21.06.2019 23:30, shadowz8813

Johnny rode his bike to a friends house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was unable to play. what was his displacement for the total bike ride trip? what could you use as a reference point ? show the steps to solve this problem.

Answers: 3

continue

Mathematics, 21.06.2019 23:40, kamdenburr

Sanjay solved the equation below. which property did he use to determine that 7x+42=42 is equivalent to 7(x+6)=42 7x+42=42 7x=0 x=0

Answers: 1

continue

You know the right answer?

A beam used in construction is made of steel, which has a coefficient of linear expansion of 1.3 × 1...