The photomultiplier tube in the scintillation counter multiplies one of the following. Does it multiply: w) scintillations x) electrons y) ions z) photons

The photomultiplier tube in the scintillation counter multiplies one of the following. Does it multiply: w) scintillations x) electrons y) ions z) photons
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ANSWER: X -- ELECTRONS
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One of the following is a device that detects charged particles but does NOT show their tracks. Is this device the: w) spark chamber x) photographic plate y) scintillation counter z) bubble chamber

Description : One of the following is a device that detects charged particles but does NOT show their tracks. Is this device the: w) spark chamber x) photographic plate y) scintillation counter z) bubble chamber

Last Answer : ANSWER: Y -- SCINTILLATION COUNTER 

A high voltage applied to a gas discharge tube containing neon gas at very low pressure causes a current to flow through the tube. Which one of the following are the particles that flow towards the cathode? Are they w) electrons x) protons y) negatively charged neon ions z) positively charged neon ions

Description : A high voltage applied to a gas discharge tube containing neon gas at very low pressure causes a current to flow through the tube. Which one of the following are the particles that flow towards the ... Are they w) electrons x) protons y) negatively charged neon ions z) positively charged neon ions

Last Answer : ANSWER: Z -- POSITIVELY CHARGED NEON IONS

Photoelectric electricity is produced directly from solar energy when which of the following are absorbed in a semiconductor to create an electric current? w) protons x) electrons y) neutrons z) photons

Description : Photoelectric electricity is produced directly from solar energy when which of the following are absorbed in a semiconductor to create an electric current? w) protons x) electrons y) neutrons z) photons

Last Answer : ANSWER: Z -- PHOTONS

Which one of the following particles travels at the speed of light? w) neutrons x) electrons y) photons z) muons

Description : Which one of the following particles travels at the speed of light? w) neutrons x) electrons y) photons z) muons

Last Answer : ANSWER: Y -- PHOTONS 

When radiation breaks an electron pair bond in a molecule and each fragment of the molecule gets one of the bond electrons, the molecular fragments that are formed are called: w) ions x) free radicals y) stable molecules z) gases

Description : When radiation breaks an electron pair bond in a molecule and each fragment of the molecule gets one of the bond electrons, the molecular fragments that are formed are called: w) ions x) free radicals y) stable molecules z) gases

Last Answer : ANSWER: X -- FREE RADICALS

Photons and gravitons are names associated with a category of particles called: w) mesons x) bosons y) leptons z) baryons

Description : Photons and gravitons are names associated with a category of particles called: w) mesons x) bosons y) leptons z) baryons

Last Answer : ANSWER: X --BOSONS

The index of refraction can be considered: w) a ratio of material thickness between substances x) a ratio of velocities of light in different materials y) a ratio of mass between materials z) to have the units of photons

Description : The index of refraction can be considered: w) a ratio of material thickness between substances x) a ratio of velocities of light in different materials y) a ratio of mass between materials z) to have the units of photons

Last Answer : ANSWER: X -- A RATIO OF VELOCITIES OF LIGHT OF DIFFERENT MATERIALS 

Neutrinos are a subset of which of the following categories? w) photons x) leptons y) mesons z) baryons

Description : Neutrinos are a subset of which of the following categories? w) photons x) leptons y) mesons z) baryons

Last Answer : ANSWER: X -- LEPTONS

The energy associated with one photon of a light beam is proportional to one of the following. Is it proportional to: w) the intensity of the light source from which it came x) the number of photons in the beam y) the frequency of the photon z) the speed of the photon

Description : The energy associated with one photon of a light beam is proportional to one of the following. Is it proportional to: w) the intensity of the light source from which it came x) the number of photons in the beam y) the frequency of the photon z) the speed of the photon

Last Answer : ANSWER: Y -- THE FREQUENCY OF THE PHOTON

The ENERGY associated with a photon depends upon the photon's: w) velocity x) frequency y) amplitude z) the brightness of the source from which it comes

Description : The ENERGY associated with a photon depends upon the photon's: w) velocity x) frequency y) amplitude z) the brightness of the source from which it comes

Last Answer : ANSWER: X -- FREQUENCY

The silver luster of the metals can be attributed to one of the following. It is attributed to their free w) protons x) ions y) neutrons z) electrons

Description : The silver luster of the metals can be attributed to one of the following. It is attributed to their free w) protons x) ions y) neutrons z) electrons

Last Answer : ANSWER: Z -- ELECTRONS 

Ammonia can be considered a Lewis base because it can donate: w) electrons x) protons y) hydronium ions z) hydroxide ions

Description : Ammonia can be considered a Lewis base because it can donate: w) electrons x) protons y) hydronium ions z) hydroxide ions

Last Answer : ANSWER: A -- ELECTRONS

A color television set employs a 25,000 volt electron accelerator to produce the picture and potentially harmful radiation which must be shielded against. The main component of this radiation consists of w) electrons which penetrate the picture tube x) soft x-rays y) microwaves z) ultraviolet radiation

Description : A color television set employs a 25,000 volt electron accelerator to produce the picture and potentially harmful radiation which must be shielded against. The main component of this radiation consists ... which penetrate the picture tube x) soft x-rays y) microwaves z) ultraviolet radiation 

Last Answer : ANSWER: X -- SOFT X-RAYS

In the mass spectrograph, two positively charged ions having the same velocity pass through a slit and enter a uniform magnetic field at right angles to their initial velocities. The ions will NOT be separated if: w) they have the same masses but different charges x) they have the same charges but different masses y) the products of their charges and their masses are equal z) the ratios of their charges to their masses are equal

Description : In the mass spectrograph, two positively charged ions having the same velocity pass through a slit and enter a uniform magnetic field at right angles to their initial velocities. The ions will NOT be ... charges and their masses are equal z) the ratios of their charges to their masses are equal  

Last Answer : ANSWER: Z -- THE RATIOS OF THEIR CHARGES TO THEIR MASSES ARE EQUAL 

The mass spectrograph directly yields a value for which one of the following? w) mass of a photon x) mass of a neutron y) masses of isotopes of elements z) mass to charge ratio of ions

Description : The mass spectrograph directly yields a value for which one of the following? w) mass of a photon x) mass of a neutron y) masses of isotopes of elements z) mass to charge ratio of ions

Last Answer : ANSWER: Z -- MASS TO CHARGE RATIO OF IONS

Which of the following instruments should never have their test leads connected directly to a wall outlet: w) ammeter x) voltmeter y) oscilloscope z) frequency counter

Description : Which of the following instruments should never have their test leads connected directly to a wall outlet: w) ammeter x) voltmeter y) oscilloscope z) frequency counter

Last Answer : ANSWER: W -- AMMETER

Who first explained the billiard-ball-like collisions photons make with the free electrons in a scattering material? He received the Nobel Prize in Physics in 1927 for this work.

Description : Who first explained the billiard-ball-like collisions photons make with the free electrons in a scattering material? He received the Nobel Prize in Physics in 1927 for this work.

Last Answer : ANSWER: ARTHUR HOLLY COMPTON

The dominant charge carriers in p-type semiconductors are: w) neutrons x) electrons y) protons z) holes

Description : The dominant charge carriers in p-type semiconductors are: w) neutrons x) electrons y) protons z) holes

Last Answer : ANSWER: Z -- HOLES

The magnitude of the quarks' electric charge is: w) zero. x) greater than the electron's charge. y) equal to the electron's charge. z) less than the electron's charge.

Description : The magnitude of the quarks' electric charge is: w) zero. x) greater than the electron's charge. y) equal to the electron's charge. z) less than the electron's charge.

Last Answer : ANSWER: Z -- LESS THAN THE ELECTRON'S CHARGE. 

A space ship traveling toward Mars at 0.6 times the speed of light c shoots an ELECTRON beam at Mars. If the electrons travel at 0.6 c RELATIVE TO THE SPACE SHIP, at what speed do the electrons impact the surface of Mars? w) 0.6 c x) 0.88 c y) 1.2 c z) 1.34 c

Description : A space ship traveling toward Mars at 0.6 times the speed of light c shoots an ELECTRON beam at Mars. If the electrons travel at 0.6 c RELATIVE TO THE SPACE SHIP, at what speed do the electrons impact the surface of Mars? w) 0.6 c x) 0.88 c y) 1.2 c z) 1.34 c

Last Answer : ANSWER: X -- 0.88 c

A reduction reaction always involves the: w) loss of electrons x) gain of electrons y) addition of oxygen z) removal of oxygen

Description : A reduction reaction always involves the: w) loss of electrons x) gain of electrons y) addition of oxygen z) removal of oxygen

Last Answer : ANSWER: X -- GAIN OF ELECTRONS

A characteristic of the noble gases is that they all: w) have eight electrons in the outer shell x) have low stability y) form many compounds z) have filled outer electron shells

Description : A characteristic of the noble gases is that they all: w) have eight electrons in the outer shell x) have low stability y) form many compounds z) have filled outer electron shells

Last Answer : ANSWER: Z -- HAVE FILLED OUTER ELECTRON SHELLS

An element has the following numbers of electrons in its shells: 2-8-8-2. Which of the following is true? The element: w) is a nonmetal x) forms an ion with a charge of +2 y) can accept two electrons z) forms a negative ion

Description : An element has the following numbers of electrons in its shells: 2-8-8-2. Which of the following is true? The element: w) is a nonmetal x) forms an ion with a charge of +2 y) can accept two electrons z) forms a negative ion

Last Answer : ANSWER: X -- FORMS AN ION WITH A CHARGE OF +2

If two atoms exert equal attractions for electrons, they can form: w) a nonpolar covalent bond x) an ionic bond y) a polar covalent bond z) no bond

Description : If two atoms exert equal attractions for electrons, they can form: w) a nonpolar covalent bond x) an ionic bond y) a polar covalent bond z) no bond

Last Answer : ANSWER: W -- A NONPOLAR COVALENT BOND

A metal ball on an insulated stand is touched by a positively charged glass rod. What happens to the metal ball? Does it w) gain protons and lose electrons x) gain protons y) gain more protons than electrons z) lose electrons

Description : A metal ball on an insulated stand is touched by a positively charged glass rod. What happens to the metal ball? Does it w) gain protons and lose electrons x) gain protons y) gain more protons than electrons z) lose electrons

Last Answer : ANSWER: Z -- LOSE ELECTRONS

In N-type semiconductors the majority of the carriers are: w) holes x) electrons y) protons z) neutrons

Description : In N-type semiconductors the majority of the carriers are: w) holes x) electrons y) protons z) neutrons 

Last Answer : ANSWER: X -- ELECTRONS

The wave nature of electrons was EXPERIMENTALLY verified by: w) Einstein x) Davisson and Germer y) Balmer z) Bohr.

Description : The wave nature of electrons was EXPERIMENTALLY verified by: w) Einstein x) Davisson and Germer y) Balmer z) Bohr.

Last Answer : ANSWER: X -- DAVISSON AND GERMER

Isotopes of an element have different numbers of: w) electrons x) protons y) neutrons z) leptons

Description : Isotopes of an element have different numbers of: w) electrons x) protons y) neutrons z) leptons

Last Answer : ANSWER: Y -- NEUTRONS

A P-type semiconductor is doped to produce one of the following. Will it produce: w) both holes and electrons x) positive electrons y) negative electrons z) holes

Description : A P-type semiconductor is doped to produce one of the following. Will it produce: w) both holes and electrons x) positive electrons y) negative electrons z) holes

Last Answer : ANSWER: Z -- HOLES

The idea that electrons revolved in orbits around the nucleus of an atom without radiating energy away from the atom was postulated by: w) Thompson x) Bohr y) Rutherford z) Einstein

Description : The idea that electrons revolved in orbits around the nucleus of an atom without radiating energy away from the atom was postulated by: w) Thompson x) Bohr y) Rutherford z) Einstein

Last Answer : ANSWER: X -- BOHR

A gas of hydrogen like ions is prepared in a particular excited state A if emit photons havingwavelength equal to the wavelength of the first line of

Description : A gas of hydrogen like ions is prepared in a particular excited state A if emit photons havingwavelength equal to the wavelength of the first line of

Last Answer : A gas of hydrogen like ions is prepared in a particular excited state A if emit photons ... find the principal quantum number of the stateA`

On which of the following does the capacity of a kilogram of air for holding water depend? w) the air pressure x) the air temperature y) the dust content of the air z) the ions in the air

Description : On which of the following does the capacity of a kilogram of air for holding water depend? w) the air pressure x) the air temperature y) the dust content of the air z) the ions in the air

Last Answer : ANSWER: X -- THE AIR TEMPERATURE 

Which of the following terms denotes the polar molecules or negative ions clustered about a central positive ion? w) ligands x) isomers y) complex ions z) dipoles

Description : Which of the following terms denotes the polar molecules or negative ions clustered about a central positive ion? w) ligands x) isomers y) complex ions z) dipoles

Last Answer : ANSWER: W -- LIGAND

pH is defined as the negative logarithm of the hydrogen ion concentration. Comparing a pH 5 and a pH 8 solution, which of the following is true? w) There are 1,000 times more hydrogen ions in the pH 8 solution. x) There are 1,000 times more hydrogen ions in the pH 5 solution. y) There are 3 times more hydrogen ions in the pH 8 solution. z) Cannot tell the difference between these two solutions by pH, since the numbers are so close.

Description : pH is defined as the negative logarithm of the hydrogen ion concentration. Comparing a pH 5 and a pH 8 solution, which of the following is true? w) There are 1,000 times more hydrogen ions in ... . z) Cannot tell the difference between these two solutions by pH, since the numbers are so close.

Last Answer : ANSWER: X -- THERE ARE 1,000 TIMES MORE HYDROGEN IONS IN THE PH 5 SOLUTION

The complete combustion of one mole of hydrogen produces: w) 1/2 mole H2O x) 1/2 mole H2O + 1/2 mole O3 y) 1 mole water z) 1 mole hydroxide ions

Description : The complete combustion of one mole of hydrogen produces: w) 1/2 mole H2O x) 1/2 mole H2O + 1/2 mole O3 y) 1 mole water z) 1 mole hydroxide ions

Last Answer : ANSWER: Y -- 1 MOLE WATER

Which of the following molecules or ions is NOT formed when K metal reacts with liquid CH3OH? Is it: w) potassium ion x) hydrogen ion y) methoxy ion z) hydrogen molecule

Description : Which of the following molecules or ions is NOT formed when K metal reacts with liquid CH3OH? Is it: w) potassium ion x) hydrogen ion y) methoxy ion z) hydrogen molecule

Last Answer : ANSWER: X -- HYDROGEN ION

Which of the following atoms or ions would be the smallest? w) sodium atom x) magnesium atom y) singly charged sodium ion z) doubly charged magnesium ion

Description : Which of the following atoms or ions would be the smallest? w) sodium atom x) magnesium atom y) singly charged sodium ion z) doubly charged magnesium ion

Last Answer : ANSWER: Z -- DOUBLY CHARGED MAGNESIUM ION

An Arrhenius acid is a substance that: w) donates protons x) accepts protons y) donates hydrogen ions to water z) donates hydroxide ions to water

Description : An Arrhenius acid is a substance that: w) donates protons x) accepts protons y) donates hydrogen ions to water z) donates hydroxide ions to water

Last Answer : ANSWER: Y -- DONATES HYDROGEN IONS TO WATER 

The theory of interionic attraction attributed to Debye and Hückel: w) was disproved by Arrhenius x) accounts quantitatively for the attraction between ions in dilute aqueous solutions y) does not account for kindered "ion-activity" z) accounts for intra-molecular polar bonds

Description : The theory of interionic attraction attributed to Debye and Hückel: w) was disproved by Arrhenius x) accounts quantitatively for the attraction between ions in dilute aqueous solutions y) does not account for kindered "ion-activity" z) accounts for intra-molecular polar bonds

Last Answer : ANSWER: X -- ACCOUNTS QUANTITATIVELY FOR THE ATTRACTION BETWEEN IONS IN DILUTE AQUEOUS SOLUTIONS

A net ionic equation does NOT show: w) electronic charges x) solid products (precipitates) y) spectator ions z) reacting species

Description : A net ionic equation does NOT show: w) electronic charges x) solid products (precipitates) y) spectator ions z) reacting species

Last Answer : ANSWER: Y -- SPECTATOR IONS

Which of the following terms refers to the number of molecules or ions attached to a central metallic atom? w) coordination number x) connection number y) bonding number z) none of these

Description : Which of the following terms refers to the number of molecules or ions attached to a central metallic atom? w) coordination number x) connection number y) bonding number z) none of these

Last Answer : ANSWER: W -- COORDINATION NUMBER

The accelerated positive ions in a discharge tube colide with_________to eject electrons.

Description : The accelerated positive ions in a discharge tube colide with_________to eject electrons.

Last Answer : The accelerated positive ions in a discharge tube colide with_________to eject electrons.

Geiger-Muller counter is used to detect-----? A. Protons (Answer) B. Neutrons C. Photons D. none

Description : Geiger-Muller counter is used to detect-----? A. Protons (Answer) B. Neutrons C. Photons D. none

Last Answer : A. Protons (Answer)

The beam that leaves the target is called, A. The primary X-ray B. The electrons ( from the cathode) C. The secondary rays (scattered radiation) D. X-ray photons no

Description : The beam that leaves the target is called, A. The primary X-ray B. The electrons ( from the cathode) C. The secondary rays (scattered radiation) D. X-ray photons no

Last Answer : A. The primary X-ray

By the transition of inner shell electrons in heavy atoms, high energy photons are emitted which are a) gamma rays b) X-rays c) radio waves d) photon rays

Description : By the transition of inner shell electrons in heavy atoms, high energy photons are emitted which are a) gamma rays b) X-rays c) radio waves d) photon rays

Last Answer : b) X-rays

Peroxides such as hydrogen peroxide and benzoyl peroxide are commonly used in small quantities in over-the-counter preparations such as antiseptics and acne creams. What hazard do peroxides present in higher concentrations? w) explosive x) strongly acidic y) strongly basic z) there is no hazard

Description : Peroxides such as hydrogen peroxide and benzoyl peroxide are commonly used in small quantities in over-the-counter preparations such as antiseptics and acne creams. What hazard do peroxides present in higher concentrations? w) explosive x) strongly acidic y) strongly basic z) there is no hazard

Last Answer : ANSWER: W -- EXPLOSIVE

If all the quarks, gluons, electrons, photons, gravitons and so on in existence came from a single-point event, are they all quantum entangled? (Strange Universe Series)

Description : If all the quarks, gluons, electrons, photons, gravitons and so on in existence came from a single-point event, are they all quantum entangled? (Strange Universe Series)

Last Answer : answer:This sounds more like eastern mysticism then science (I had to throw that one in there). I've responded to several of your other strange universe series questions and in some of my long posts I ... level of reality that seems to make up the majority of outer space, the i-ther/dark matter?

The difference between isotopes of an element is due to the presence of a different number of (a) Protons (b) Neutrons (c) Electrons (d) Photons

Description : The difference between isotopes of an element is due to the presence of a different number of (a) Protons (b) Neutrons (c) Electrons (d) Photons

Last Answer : Ans:(b)

A major breakthrough in the studies of cells came with the development of electron microscope. This is because (a) the electron microscope is more powerful than the light microscope as it uses a beam of electrons which has wavelength much longer than that of photons (b) the resolving power of the electron microscope is much higher than that of the light microscope (c) the resolving power of the electron microscope is 200 - 350 nm as compared to 0.1 - 0.2 nm for the light microscope (d) electron beam can pass through thick materials, whereas light microscopy requires thin sections.

Description : A major breakthrough in the studies of cells came with the development of electron microscope. This is because (a) the electron microscope is more powerful than the light microscope as it ... (d) electron beam can pass through thick materials, whereas light microscopy requires thin sections.

Last Answer : (b) the resolving power of the electron microscope is much higher than that of the light microscope

In solid-state optical detectors, the excited charge is transported in the solid by ∙ a. Holes and protons ∙ b. Holes and electrons ∙ c. Anion and cation ∙ d. Protons and photons

Description : In solid-state optical detectors, the excited charge is transported in the solid by ∙ a. Holes and protons ∙ b. Holes and electrons ∙ c. Anion and cation ∙ d. Protons and photons

Last Answer : ∙ b. Holes and electrons