Question

A HOT and a COLD side of some object are separated by 1 cm of Al and 1 cm of styrofoam. Compare the thermal resistance of the thermal circuit if the Al and styrofoam are connected (a) in series and (b) in parallel.

Answer #1

(1)(A)What is the hot resistance of a 41.0 W light bulb with a
tungsten filament that runs on 120 V AC? If the bulb's operating
temperature is 2700°C, what is its resistance at 2620°C? The
temperature coefficient of resistivity of tungsten is 4.50
10-3 °C−1.
(B)An AC voltage source and a resistor are connected in series
to make up a simple AC circuit. If the source voltage is given by
V = V0
sin(2πft) find the first time after
t...

1.) A parallel-plate capacitor is constructed from two circular
plates with diameter 5.0 cm separated by 0.20 mm. What charge will
collect on the plates if the capacitor is connected to a potential
difference of 35.0 V?
2.)The capacitor from the previous problem is now disconnected
from the voltage source. The separation between the capacitor
plates is quadrupled and an insulator is inserted between the
plates. The voltage between the plates is measured to be 68.3 V.
Find the dielectric...

QUESTION 1
How do you connect a voltmeter to a circuit?
a) in series
b) None of the answers is correct.
c) either way is correct
d) in parallel
QUESTION 2
Can you connect a Digital multimeter (Ohmmeter) to a resistor in
circuit to measure the resistance of resistor?
a) No.
b) Yes.
c) Yes, if the Ohmmeter has a low internal resistance.
d) Yes, if the Ohmmeter has a high internal resistance.
QUESTION 3
Three resistors R1, R2 and...

Resistors R 1 = 20 ohms, R 2 = 40 ohms, and R 3 = 60 ohms, are
all connected in series with one another.
The combination of three resisters in series is now connected in
parallel with a 240 ohm
resistor, and the resulting circuit is connected across an ideal
62.5 volt battery.
a) Find the equivalent resistance connected across the
battery.
b) Find the potential across each of the four resistors, and the
current through each.
c) Find...

1.) A 2.00 µF and a 7.50 µF capacitor can be connected in series
or parallel, as can a 50.0 kΩ and a 100 kΩ resistor. Calculate the
four RC time constants (in s) possible from connecting the
resulting capacitance and resistance in series.
resistors and capacitors in series: __________s
resistors in series, capacitors in parallel: ____________s
resistors in parallel, capacitors in
series:________________s
capacitors and resistors in parallel: ____________________s
2) A 1.16 MΩ voltmeter is placed in parallel with a...

Chapter 18, Problem 1
A 47- resistor and a 29- resistor are connected in series across
a 24-V battery. What is the voltage across (a) the
47- resistor and (b) the 29- resistor?
Chapter 18, Problem 2
The current in a 63- resistor is 0.077 A. This resistor is in
series with a 42- resistor, and the series combination is connected
across a battery. What is the battery voltage?
Chapter 18, Problem 3
What resistance must be placed in parallel...

Running along each side of the back of a squid is a tube-like
structure that can be as large as 1.5 mm in diameter in some
species. Originally thought to be blood vessels, in the late 1930s
the anatomist J.Z. Young discovered that the structures are
connected to the nervous system, not to the heart. Although the
vast majority of axons in the squid range in diameter from about 10
μm to 50 μm, as squid develop, axons from about...

QUESTIONS FOR SERIES AND PARALLEL CIRCUITS
1. i) How does the equivalent resistance of a series circuit
compare to each individual resistor? ii) Answer the same question
for a parallel circuit?
2. Assume that you have three 2Ω resistors. Show using a
schematic drawing, how youwould connect these together to achieve
the following resistances: (a) 1Ω, (b) 3Ω, and (c)4 Ω. Note that
you do not always have to use all three resistors to achieve your
goal.
PAGE 2
3....

1. A hot-air balloon, open at one end, rises when the air inside
is heated by a flame. How does the temperature, pressure and
density of the air inside the balloon compare to the air outside?
For each property, state if they are higher, lower or the same
inside the balloon versus outside.
2. What is the atomic mass of Aluminum (Al)? Give your answer in
both atomic mass units and in kilograms. Mass = _____________ u
(atomic mass units)...

(1)(A)What resistance do you need to connect in parallel to a
120 Ω resistor to get a total of 51.0 Ω?
(B)You have in your possession numerous
resistors with a value of 3.50 mΩ each. hat is the smallest number
you could hook together to get an effective resistance of 1.505 Ω?
(Enter the smallest possible whole number of resistors.)
(C)Your car's 27.7-W headlight and 2.75-kW starter are
ordinarily connected in parallel in a 12.0-V system. What power
would one...

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