Physics, 05.02.2020 08:54 erin2077

As the temperature of a metal rod varies, so does the resistance and the dimensions of the rod. if a iron rod has a resistance of 2.89 ω at 20.0°c, determine the resistance of the rod (in ω) at 120°c by accounting for the changes in both the resistivity and the dimensions of the rod. the coefficient of linear expansion for iron is 4.50 ✕ 10−6 (°c)−1 and the temperature coefficient of resistivity is 4.50 ✕ 10−3 (°c)−1.

Answers: 2

Show answers

Another question on Physics

Physics, 22.06.2019 01:30

Ablock of mass 1.5 kg slides down an inclined plane that has an angle of 15. if the inclined plane has no friction and the block starts at a height of 3 m, how much kinetic energy does the block have when it reaches the bottom? acceleration due to gravity is g = 9.8 m/s2. a. 6.8 j b. 50.9 j c. 0 j d. 44.1 j

Answers: 1

Answer

Physics, 22.06.2019 07:00

Abucket full of water weights 4 kg and water well is 10m deep. a girl draws water from the well. it takes the girl 3 minutes to draw a bucket full of water from the well. what is the power of the girl?

Answers: 1

Answer

Physics, 22.06.2019 10:00

Need people build a dam to create a reservoir that supplies water a nearby city needs. describe two ways this action will likely affect the water cycle in the local environment. (5 points) worth 20 points

Answers: 1

Answer

Physics, 22.06.2019 13:40

What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 480 ? the index of refraction of the film is 1.34, and there is air on both sides of the film. express your answer in nanometers. hint 1. how to approach th

Answers: 1

Answer

You know the right answer?

As the temperature of a metal rod varies, so does the resistance and the dimensions of the rod. if a...

Questions

Physics, 28.01.2021 17:40

Calculate the kinetic energy of a 2.2 kg brick when it has a velocity of 4.9 m/s....