Electricity for Refrigeration, Heating, and Air Conditioning
9th Edition
ISBN: 9781285179988
Author: Russell E. Smith
Publisher: Cengage Learning
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Chapter 2, Problem 20RQ
What is a proton? Where does it normally exist in an atom, and what is its charge?
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The type of charge possessed by an electron is:
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As shown in (Eigure 1), metal sphere A has 4 units of
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Chapter 2 Solutions
Electricity for Refrigeration, Heating, and Air Conditioning
Ch. 2 - All physical objects are composed of __________....Ch. 2 - What is an atom?Ch. 2 - Which of the following is a part of the atom? a....Ch. 2 - What is static electricity?Ch. 2 - Name three ways electricity can be produced.Ch. 2 - What part do protons and electrons play in the...Ch. 2 - Which of the following is the simplest atom that...Ch. 2 - What are the four most important characteristics...Ch. 2 - What is electromotive force?Ch. 2 - Electromotive force is commonly measured in _____....
Ch. 2 - What is current?Ch. 2 - How is current measured? a. amperes b. ohms c....Ch. 2 - What is resistance?Ch. 2 - How is resistance commonly measured? a. amperes b....Ch. 2 - What is electrical power?Ch. 2 - How is electrical power commonly measured? a....Ch. 2 - Where do electrons exist in an atom, and what is...Ch. 2 - True or False: All atoms tend to lose electrons.Ch. 2 - State the law of electric charges.Ch. 2 - What is a proton? Where does it normally exist in...Ch. 2 - Describe briefly the method a dry cell battery...Ch. 2 - What is a conductor?Ch. 2 - Which of the following is the best conductor? a....Ch. 2 - What is an insulator?Ch. 2 - Which of the following is the best insulator? a....Ch. 2 - Why do metals make the best conductors?Ch. 2 - How do electric utility companies charge customers...Ch. 2 - What is the meaning of SEER when used in...Ch. 2 - State Ohms law.Ch. 2 - True or False: Ohms law applies to all types of...Ch. 2 - What is the ampere draw of a 5000-watt electric...Ch. 2 - What is the resistance of the heating element of...Ch. 2 - What is the voltage of a small electric heater if...Ch. 2 - What is the Btu/hour output of an electric heater...Ch. 2 - What is the kilowatt output of an electric heater...
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- A charge of 10nC between two parallel plates 1 cm apart experiences a force of magnitude 10^-5 N. What is the potential difference between the plates? *arrow_forwardIn Niels Bohr's 1913 model of the atom, the electron is in a circular orbit around a nucleus. An electron is 5.70 x 10-11 m from a nucleus traveling in a circular orbit with a speed of 2.15 x 106 m/s. What is the magnitude of the magnetic moment due to the electron's motion?arrow_forwardHow much work is done (by a battery, generator, or some other source of potential difference) in moving Avogadro's number of electrons from an initial point where the electric potential is 6.30 V to a point where the electric potential is -5.50 V? (The potential in each case is measured relative to a common reference point.)arrow_forward
- Chemical energy refers to the energy associated with the bonds within nucleus of atom itself. Select one: True Falsearrow_forwardAn electron has a constant acceleration of 3.2 m/s?, At a certain instant, its velocity is 9.6 m/s. The velocity of the electron 2.5 s earlier wasarrow_forwardWhich of the following is not the unit for electrical conductivity? Select one: O (0-m) - 1 O N-m O (N-mm) -1 O S/marrow_forward
- A rod and two balloons A very thin glass rod 4 meters long is rubbed all over with silk cloth. It gains a uniformly distributed charge 1.2 x 10-6 C. Two small spherical rubber balloons of radius 1.2 cm are rubbed all over with wool. They each gain a uniformly distributed charge of -4 x 10-8 C. The balloons are near the midpoint of the glass rod, with their centers 3 cm from the rod. The balloons are 2 cm apart (4.4 cm between centers). Length 4 m (drawing not to scale) 2 cm 3 cm Radius 1.2 cm 0,6 cm (a) Find the net electric field at the location marked by the x, 0.6 cm to the right of the center of the left balloon. Things to think about: Which objects make nonzero contributions to E at this location? What are the correct distances from sources to the observation location? What is the direction ofE due to the rod? (The drawing is not to scale; read the problem statement carefully. Assume the +x axis is to the right, the +y axis is up, and the +z axis is out.) N/C What approximations…arrow_forwardThe south pole of one magnet is brought close to the south pole of another magnet. Will the magnets repel or attract each other?arrow_forwardA ring of radius R has a non-homogeneous linear charge distribution, where a is a constant. Calculate the total charge of the ring and then the total charge of a half-ring of equal radius and charge distribution.arrow_forward
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