Physics, 27.11.2019 19:31 gabriellarose2930
A1.70 m cylindrical rod of diameter 0.550 cm is connected to a power supply that maintains a constant potential difference of 13.0 v across its ends, while an ammeter measures the current through it. you observe that at room temperature (20.0∘c) the ammeter reads 18.7 a, while at 92.0∘c it reads 17.1 a. you can ignore any thermal expansion of the rod. 1.find the resistivity and for the material of the rod at 20 ^\circ {\rm c}. (rho= ? ω*m)
2.find the temperature coefficient of resistivity at 20 ^\circ {\rm c} for the material of the rod.(α= ? (c)^-1)
Answers: 2
Physics, 22.06.2019 00:30
What are the theoretical properties of a gas at a temperature of 0 kelvin?
Answers: 3
Physics, 22.06.2019 05:10
Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.
Answers: 3
Physics, 22.06.2019 08:00
5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.
Answers: 3
Physics, 22.06.2019 12:00
Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.
Answers: 1
A1.70 m cylindrical rod of diameter 0.550 cm is connected to a power supply that maintains a constan...
Computers and Technology, 05.10.2019 21:00
Mathematics, 05.10.2019 21:00
History, 05.10.2019 21:00
Mathematics, 05.10.2019 21:00
Geography, 05.10.2019 21:00
History, 05.10.2019 21:00
Arts, 05.10.2019 21:00
History, 05.10.2019 21:00
Mathematics, 05.10.2019 21:00
Mathematics, 05.10.2019 21:00
Mathematics, 05.10.2019 21:00
Mathematics, 05.10.2019 21:00
Mathematics, 05.10.2019 21:00