Physics, 02.03.2020 18:08 ccompassimvu
Problem 3: Thermal expansionThe steel rod has the length 2 m and cross-section area 200 cm2at the room temperature 20◦C. Weapply the heat source and the temperature of the rod increases. The coefficient of linear expansion isα= 2×10−6K−1.a) What is the new length of the rod if the temperature jumps to 80◦C?b) What is the percentage of the volume change of the rod?c) What is the maximal temperature we can allow if the volume should not increase by more thanhalf percent?
Answers: 3
Physics, 22.06.2019 14:30
Which of these is constant for all types of electromagnetic radiation in a vacuum? select one: a. wavelength b. frequency c. photon energy d. amplitude e. velocity
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Physics, 22.06.2019 18:30
Two 2.0-cm-diameter disks face each other, 1.0 mm apart. they are charged to ±10 nc. what is the electric field strength between the disks? a proton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?
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Problem 3: Thermal expansionThe steel rod has the length 2 m and cross-section area 200 cm2at the ro...
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