Question
In: Physics
At a certain temperature T1, a (1.8922x10^2) mm rod of a copper-nickel alloy has a resistivity...
At a certain temperature T1, a (1.8922x10^2) mm rod of a copper-nickel alloy has a resistivity of (2.770x10^1) x 10-8 Ω-m. For pure copper, the resistivity at 0°C is 1.58 x 10-8 Ω-m and the change in resistivity per degree increase in temperature is 6.50 x 10-11 (Ω-m)/°C. The value of A for nickel in copper is 1.18 x 10-6 Ω-m and the coefficient of thermal expansion of this alloy is (1.543x10^1) x 10-6(°C)-1.
If the resistivity of this alloy is dependent only on thermal and
impurity considerations, find the composition of this alloy (in at%
Ni) if the rod increases in length by (3.3120x10^-1) mm when heated
from T1 to (1.86x10^2) °C.
Solutions
genius_generous answered 2 years agoRelated Solutions
At a certain temperature T1, a (1.2324x10^2) mm rod of a copper alloy containing (3.04x10^1) at%...
At a certain temperature T1, a (1.2324x10^2) mm rod
of a copper alloy containing (3.04x10^1) at% Ni has a resistivity
of (2.725x10^1) x 10-8 Ω-m.
For pure copper, the resistivity at 0°C is 1.58 x
10-8 Ω-m and the change in resistivity per degree
increase in temperature is 6.50 x 10-11 (Ω-m)/°C. The
value of A for nickel in copper is 1.18 x 10-6 Ω-m and
the coefficient of thermal expansion of this alloy is (1.6947x10^1)
x 10-6 (°C)-1.
If...
1. If 55.1 cm of copper wire (diameter = 1.18 mm, resistivity = 1.69 × 10-8Ω·m)...
1. If 55.1 cm of copper wire (diameter = 1.18 mm, resistivity =
1.69 × 10-8Ω·m) is formed into a circular loop and
placed perpendicular to a uniform magnetic field that is increasing
at the constant rate of 12.6 mT/s, at what rate is thermal energy
generated in the loop?
2. A rectangular loop (area = 2.7 m2) turns in a
uniform magnetic field, B = 3.2 T. When the angle between
the field and the normal to the plane...
You have a (copper) rod that is 702 mm at 20 C, you also have an...
You have a (copper) rod that is 702 mm at 20 C, you also have an
aluminum rod that has a length of 700 mm. When the rods are the
same length, what is the temperature?
. A 20 mm diameter sphere made of aluminum alloy 2024 initially at a uniform temperature...
. A 20 mm diameter sphere made of aluminum alloy 2024 initially
at a uniform temperature of 500 ºC is suddenly immersed in a
saturated water bath maintained at atmospheric pressure. The
surface of the sphere has an emissivity or 0.25. Determine.
a.) the total heat transfer coefficient for this initial
condition, and
b.) what fraction of the total coefficient is contributed by
radiation. (~180 W/m2 -K, ~ 7%)
To what temperature (in °C) must a cylindrical rod of one metal 10.045 mm in diameter...
To what temperature (in °C) must a cylindrical rod of one metal
10.045 mm in diameter and a plate of second metal having a circular
hole 9.990 mm in diameter have to be heated for the rod to just fit
into the hole? Assume that the initial temperature is 25°C and that
the linear expansion coefficient values for metals one and two are
4.9 x 10-6 (°C)-1 and 17 x 10-6
(°C)-1, respectively.
A 50 cm *50 cm copper slab 6.25 mm thick has uniform temperature of 300°C. Its...
A 50 cm *50 cm copper slab 6.25 mm thick has uniform temperature
of 300°C. Its temperature is suddenly lowered to 36°C. (quenched in
water) Take The conductivity k-370 W/mK, the density rho-9100
kg/m³, the specific heat c-0.38 K/kg°C, the convection coefficient
h=90 W/m2C.
1- Calculate the surface area, As
a - 0.125 m2
b- 0.5125 m2
c- 0.25 m2
d- 0.5 m2
2. Calculate the volume,
a- 0.0015625 m3
b- 0.003205 m3
c- 0.00078125 m3
d- 0.03587 m3
3....
A materials scientist has created an alloy containing aluminum, copper, and zinc, and wants to determine...
A materials scientist has created an alloy containing aluminum,
copper, and zinc, and wants to determine the percent composition of
the alloy. The scientist takes a 11.470 g sample of the alloy and
reacts it with concentrated HCl. The reaction converts all of the
aluminum and zinc in the alloy to aluminum chloride and zinc
chloride in addition to producing hydrogen gas. The copper does not
react with the HCl. Upon completion of the reaction, a total of
9.77 L...
A materials scientist has created an alloy containing aluminum, copper, and zinc, and wants to determine...
A materials scientist has created an alloy containing aluminum,
copper, and zinc, and wants to determine the percent composition of
the alloy. The scientist takes a 11.470 g sample of the alloy and
reacts it with concentrated HCl. The reaction converts all of the
aluminum and zinc in the alloy to aluminum chloride and zinc
chloride in addition to producing hydrogen gas. The copper does not
react with the HCl. Upon completion of the reaction, a total of
9.77 L...
A materials scientist has created an alloy containing aluminum, copper, and zinc, and wants to determine...
A materials scientist has created an alloy containing aluminum,
copper, and zinc, and wants to determine the percent composition of
the alloy. The scientist takes a 10.652 g sample of the alloy and
reacts it with concentrated HCl. The reaction converts all of the
aluminum and zinc in the alloy to aluminum chloride and zinc
chloride in addition to producing hydrogen gas. The copper does not
react with the HCl. Upon completion of the reaction, a total of
8.94 L...
A materials scientist has created an alloy containing aluminum, copper, and zinc, and wants to determine...
A materials scientist has created an alloy containing aluminum,
copper, and zinc, and wants to determine the percent composition of
the alloy. The scientist takes a 12.232 g sample of the alloy and
reacts it with concentrated HCl. The reaction converts all of the
aluminum and zinc in the alloy to aluminum chloride and zinc
chloride in addition to producing hydrogen gas. The copper does not
react with the HCl. Upon completion of the reaction, a total of
10.1 L...
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