Coefficient of thermal expansion is defined as the fractional change in length per unit change in temperature.
Given, dL=0.37 mm=0.00037 m, L=4.1 m, dT=15 K
The material of an unknown composition with that initial length of 4.1 m is found to...
A rod with an initial length of 4.88 m i heated from a temperature of 4 °C to 52 °C. The material has a linear coefficient of thermal expansion of 0.000093 °C-1. What is the new total length of the rod? Answer: Check
An unknown metal rod has an initial length of 39.82 ± 0.02 cm at 21.5 ± 0.2 oC. The rod is heated to a temperature of 97.8 ± 0.2 oC and the change in length recorded at various temperatures, as shown in the given table. Generate an accurate graph of the change in length as a function of the measured temperature. From the slope, determine the coefficient of linear expansion for the rod. From the intercept, determine the coefficient of...
A steel container is filled to the brim with an unknown liquid. The container’s initial volume at 15° C is 320 mL. The coefficient of volume expansion for steel is 3.6 x 10-5. When the container and the liquid are heated from 15° C to 88° C, 7.5 mL of liquid spills over. What is the coefficient of volume expansion of the liquid?
A cylindrical resistor of radius 4.1 mm and length 2.2 cm is made of material that has a resistivity of 3.50×10-5 Ω m. What is the current density when the energy dissipation rate in the resistor is 1.0 W?
Consider a Chevron actuator as shown below. It is made of a hypothetical material which has Young's modulus of 200 GPa and thermal expansion coefficient of 13 ppm/K. The half-beam length L is 300 um. The angle 0 is 2°. Current is flowing through the actuator and the beam is uniformly heated from room temperature (300K) to 500 KY What is the displacement at the center of the II of this Chevron actuator in y-axis? Consider a Chevron actuator as...
An iron rod is 200 m long at 20°C. What will be the increase in length when heated to 220°C? The coefficient of thermal expansion of iron is 12 x 10-6 °C-1. A. 0.48 m B. 0.36 m C. 0.24 m D. 0.12 m E. 0.06 m
4. A metal wire that is 3 m long at 20 °C is found to increase in length by 1,5 cm when heated to 520 °C. Determine the coefficient of linear expansion of the metal. (3)
3. (8 pts.) A tube made out of a mystery metal has a length of 1.2475 m when its temperature is 22.005°C. When the tube is heated to a temperature of 97.842"c, its length is measure to be 1.2490 m. Find the metal's coefficient of thermal expansion, a.
A sample of an unknown material appears to weigh 300 N in air and 222 N when totally immersed in alcohol. What are (a) the volume and (b) the density of the material? (c) What material is it? The Universal constant R=8.31J/mol K The absolute temperature T (Kevin) = Tc +273.15 The atmospheric pressure=1atm=1.013*105Pa. The density of alcohol=700kg/m3. The density of aluminum=2.7*103kg/m3. The density of iron=7.86*103kg/m3. The density of water=1000kg/m3. The thermal expansion coefficient of steel: 12x10-6(1/°C) Lf of water...
A beam of an unknown, brownish material is 1.0 m long at a temperature of 35 degrees C. On a hot day, the temperature rises to 45 degrees C. The beam's length is observed to increase by 2.1 mm. What is the material of the beam?