Two square wires are composed differently, see the figure of their cross-sections. Wire 1 is a...
Two square wires are composed differently, see the figure of their cross-sections. Wire 1 is a square wire of material A but with a circular center of material C. The diameter of the circular inside is equal to the length of side of the square. The second square wire has the same cross-sectional area as the first but is entirely comprised of material A. Both wires are the same length and setup to have the same temperature difference maintained between their ends.
(a) Find an expression, in terms of their thermal conductivities k, for the ratio of the heat transfer through wire 1 over that through wire 2.
(b) If material A is Aluminum and material C is copper, calculate the ratio of their heat transfers
Homework Answers
Add Answer to:
Two square wires are composed differently, see the figure of
their cross-sections. Wire 1 is a...
23. Two wires A and B with circular cross sections are made of the same metal...
23. Two wires A and B with circular cross sections are made of the same metal and have equal lengths, but the resistance of wire A is three times greater than that of wire B. What is the ratio of the cross- sectional area of A to that of B? a. 3 b. 13 c. 1 d. 1/13 e. 1/3 24. A potential difference of 1.0 V is maintained across a 10.0-V resistor for a period of 20 s. What...
In the figure, four long straight wires are perpendicular to the page, and their cross sections...
In the figure, four long straight wires are perpendicular to the
page, and their cross sections form a square of edge length
a = 10.0 cm. Each wire carries 7.00 A, and the currents
are out of the page in wires 1 and 4 and into the page in wires 2
and 3. In unit-vector notation, what is the net magnetic force per
meter of wire length on wire 4?
ーーーー。
In the figure, four long straight wires are perpendicular to the page, and their cross sections...
In the figure, four long straight wires are perpendicular to the
page, and their cross sections form a square of edge length a =
15.5 cm. Each wire carries 4.00 A, and the currents are out of the
page in wires 1 and 4 and into the page in wires 2 and 3. In
unit-vector notation, what is the net magnetic force per meter of
wire length on wire 4?
In the figure, four long straight wires are perpendicular to the page, and their cross sections form a square of edge le...
In the figure, four long straight wires are perpendicular to the
page, and their cross sections form a square of edge length
a = 27 cm. The currents are out of the page in wires 1 and
4 and into the page in wires 2 and 3, and each wire carries 23 A.
What is the magnitude of the net magnetic field at the square's
center?
中一中 十al
At the same temperature, two wires made of pure copper have different resistances. The same voltage...
At the same temperature, two wires made of pure copper have different resistances. The same voltage is applied at the ends of each wire. The wires may differ in Check all that apply. length. cross-sectional area. resistivity. amount of electric current passing through them
Two copper wires have the same length but different cross sectional areas. The cross-sectional area of...
Two copper wires have the same length but different cross sectional areas. The cross-sectional area of wire 1 is A, and that of wire 2 is 2A. How are the resistances of the two wires related? Choose the correct answer from the following choices. Wire 1 has four times the resistance of Wire 2 Wire 1 has half the resistance of Wire 2 The are the same. Wire 1 has twice the resistance of Wire 2
In the figure, four long straight wires are perpendicular to the page, and their cross sections...
In the figure, four long straight wires are perpendicular to the page, and their cross sections form a square of edge length a = 26 cm. The currents are cut of the page in wires 1 and 4 and into the page in wires 2 and 3, and each wire carries 25 A. What is the magnitude of the net magnetic field at the square's center?
Two wires made of copper and aluminum have the same length and diameter. The wires are...
Two wires made of copper and aluminum have the same length and diameter. The wires are fused together end-to-end to form a single wire. A potential difference is applied to the ends of the wire by a battery so that current flows along the wire. What is the ratio of the electron drift velocity between the two metals, reported as ?
Two copper wires have equal cross-sectional area and lengths of 2.0m and 0.50 m, respectively. What...
Two copper wires have equal cross-sectional area and lengths of 2.0m and 0.50 m, respectively. What is the ratio of the current through the shorter wire to that through the longer if both have the same applied voltage? Please explain. Thank you
L Two bars, A and B, each of length 2.0 m and cross sectional area 1.0...
L Two bars, A and B, each of length 2.0 m and cross sectional area 1.0 m2, are placed end to end as shown in the figure. The thermal conductivities of the bars are ka 439 Ms-m-K) and ks # 887 J/(s-m-K), respectively. The left end of bar A is maintained at 373 K while the rnight end of B is maintained at 273 K. 373 K 273 K (a) What is the temperature at the interface between A and...
23. Two wires A and B with circular cross sections are made of the same metal and have equal lengths, but the resistance of wire A is three times greater than that of wire B. What is the ratio of the cross- sectional area of A to that of B? a. 3 b. 13 c. 1 d. 1/13 e. 1/3 24. A potential difference of 1.0 V is maintained across a 10.0-V resistor for a period of 20 s. What...
In the figure, four long straight wires are perpendicular to the
page, and their cross sections form a square of edge length
a = 10.0 cm. Each wire carries 7.00 A, and the currents
are out of the page in wires 1 and 4 and into the page in wires 2
and 3. In unit-vector notation, what is the net magnetic force per
meter of wire length on wire 4?
ーーーー。
In the figure, four long straight wires are perpendicular to the
page, and their cross sections form a square of edge length a =
15.5 cm. Each wire carries 4.00 A, and the currents are out of the
page in wires 1 and 4 and into the page in wires 2 and 3. In
unit-vector notation, what is the net magnetic force per meter of
wire length on wire 4?
In the figure, four long straight wires are perpendicular to the
page, and their cross sections form a square of edge length
a = 27 cm. The currents are out of the page in wires 1 and
4 and into the page in wires 2 and 3, and each wire carries 23 A.
What is the magnitude of the net magnetic field at the square's
center?
中一中 十al
In the figure, four long straight wires are perpendicular to the page, and their cross sections form a square of edge length a = 26 cm. The currents are cut of the page in wires 1 and 4 and into the page in wires 2 and 3, and each wire carries 25 A. What is the magnitude of the net magnetic field at the square's center?
L Two bars, A and B, each of length 2.0 m and cross sectional area 1.0 m2, are placed end to end as shown in the figure. The thermal conductivities of the bars are ka 439 Ms-m-K) and ks # 887 J/(s-m-K), respectively. The left end of bar A is maintained at 373 K while the rnight end of B is maintained at 273 K. 373 K 273 K (a) What is the temperature at the interface between A and...
Most questions answered within 3 hours.
-
Alternative
Classification
How to Estimate
Probabilities from Data? ( For continuous Attributes)
And How to generate...
asked 1 minute from now -
An explosion breaks a 20.0-kg object into three parts. The
object is initially moving at a...
asked 51 minutes ago -
Calculate the approximate number of residues of Rubisco, which
is involved in carbon fixation in plants,...
asked 1 hour ago -
Other decisions about scientific claims can have a much broader
impact.ENERGYarrow-10x10.png, environment, health, security - all...
asked 2 hours ago -
I need to write a research paper and work cited about this
topic: The United States...
asked 3 hours ago -
Hello! I was wondering if I could have some help?
If the vapor pressure of carvone...
asked 3 hours ago -
An economist wants to estimate the mean per capita income (in
thousands of dollars) for a...
asked 3 hours ago -
What would be the input/output characteristic of a circuit
obtained by putting two of your 2's-complementers...
asked 3 hours ago -
In Drosophila, the transition from the syncytial blastoderm
stage to the cellular blastoderm stage is a...
asked 4 hours ago -
Project management question:
Name 3 different types of resources (hint: humans are one
type)
asked 4 hours ago -
Consider the following reaction: C 2H 2( g) + 2H 2( g) C 2H 6(
g)...
asked 4 hours ago -
Consider a 1.0 L buffer containing 0.092 mol L-1 HCOOH and 0.100
mol L-1 HCOO-. What...
asked 4 hours ago