Nature tends to move toward states of: w) high energy and disorder x) high energy and order y) low energy and disorder z) low energy and order

Nature tends to move toward states of: w) high energy and disorder x) high energy and order y) low energy and disorder z) low energy and order
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ANSWER: Y -- LOW ENERGY AND DISORDER
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According to the second law of thermodynamics, energy tends to become more and more unavailable for conversion from: w) thermal to kinetic energy x) kinetic to thermal energy y) thermal to mechanical energy z) mechanical to thermal energy

Description : According to the second law of thermodynamics, energy tends to become more and more unavailable for conversion from: w) thermal to kinetic energy x) kinetic to thermal energy y) thermal to mechanical energy z) mechanical to thermal energy

Last Answer : ANSWER: Y -- THERMAL TO MECHANICAL ENERGY

A far-sighted person, without optical correction, is typically able to see nearby objects more clearly in bright light. The reason for this phenomena is: w) bright light provides better illumination. x) the pupil of the eye narrows which increases the depth of focus. y) the pupil of the eye widens which increases the depth of focus. z) the bright light causes squinting which flattens the eyeball which tends to correct the far-sighted condition.

Description : A far-sighted person, without optical correction, is typically able to see nearby objects more clearly in bright light. The reason for this phenomena is: w) bright light provides better ... bright light causes squinting which flattens the eyeball which tends to correct the far-sighted condition.

Last Answer : ANSWER: X -- THE PUPIL OF THE EYE NARROWS WHICH INCREASES THE DEPTH OF FOCUS

Which of the following metals is LEAST reactive toward atmospheric oxygen? w) Lead x) Copper y) Iron z) Aluminum

Description : Which of the following metals is LEAST reactive toward atmospheric oxygen? w) Lead x) Copper y) Iron z) Aluminum

Last Answer : ANSWER: X -- COPPER

For which of the following reasons is plutonium-238 used for generating electricity on spacecraft? w) It is an alpha emitter with long half-life. x) It is a beta emitter with high specific power. y) It occurs abundantly in nature. z) It has low specific power.

Description : For which of the following reasons is plutonium-238 used for generating electricity on spacecraft? w) It is an alpha emitter with long half-life. x) It is a beta emitter with high specific power. y) It occurs abundantly in nature. z) It has low specific power.

Last Answer : ANSWER: W -- IT IS AN ALPHA EMITTER WITH LONG HALF-LIFE. 

In general, as you move down a family the ionization energy: w) increases x) decreases y) remains the same z) increases or decreases

Description : In general, as you move down a family the ionization energy: w) increases x) decreases y) remains the same z) increases or decreases

Last Answer : ANSWER: X -- DECREASES

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

The magnetic field produced by a long straight wire carrying a current points: w) in the direction of the current x) toward the wire y) away from the wire z) circles around the wire

Description : The magnetic field produced by a long straight wire carrying a current points: w) in the direction of the current x) toward the wire y) away from the wire z) circles around the wire

Last Answer : ANSWER: Z -- CIRCLES AROUND THE WIRE

A satellite travels at a constant speed in a circular orbit. The acceleration of the satellite is w) zero x) toward the center of the orbit y) away from the center of the orbit z) at a tangent to the orbit

Description : A satellite travels at a constant speed in a circular orbit. The acceleration of the satellite is w) zero x) toward the center of the orbit y) away from the center of the orbit z) at a tangent to the orbit

Last Answer : ANSWER: X -- TOWARD THE CENTER OF THE ORBIT

For an infinite sheet of positive charge, the electric field lines: w) run parallel to the sheet of charge x) are perpendicular to the sheet of charge and point in toward the sheet y) are perpendicular to the sheet of charge and point away from the sheet z) fall off as one over r squared

Description : For an infinite sheet of positive charge, the electric field lines: w) run parallel to the sheet of charge x) are perpendicular to the sheet of charge and point in toward the sheet y) are perpendicular to the sheet of charge and point away from the sheet z) fall off as one over r squared

Last Answer : ANSWER: Y -- ARE PERPENDICULAR TO THE SHEET OF CHARGE AND POINT AWAY  

For a negative point charge, the electric field vectors: w) circle the charge x) point radially in toward the charge y) point radially away from the charge z) cross at infinity

Description : For a negative point charge, the electric field vectors: w) circle the charge x) point radially in toward the charge y) point radially away from the charge z) cross at infinity

Last Answer : ANSWER: X -- POINT RADIALLY IN TOWARD THE CHARGE

In the sea breeze, which onsets quickly (< 3 hours), air tends to move . (a) From areas of high pressure to low pressure (b) From areas of low pressure to high pressure (c) Along lines of equal pressure (isobars) (d) Across lines of equal pressure (isobars)

Description : In the sea breeze, which onsets quickly (< 3 hours), air tends to move . (a) From areas of high pressure to low pressure (b) From areas of low pressure to high pressure (c) Along lines of equal pressure (isobars) (d) Across lines of equal pressure (isobars)

Last Answer : From areas of high pressure to low pressure

In the sea breeze, which onsets quickly (< 3 hours), air tends to move . (a) From areas of high pressure to low pressure (b) From areas of low pressure to high pressure (c) Along lines of equal pressure (isobars) (d) Across lines of equal pressure (isobars)

Description : In the sea breeze, which onsets quickly (< 3 hours), air tends to move . (a) From areas of high pressure to low pressure (b) From areas of low pressure to high pressure (c) Along lines of equal pressure (isobars) (d) Across lines of equal pressure (isobars)

Last Answer : (a) From areas of high pressure to low pressure

Entropy is a measure of: w) magnetization x) disorder y) temperature z) heat

Description : Entropy is a measure of: w) magnetization x) disorder y) temperature z) heat

Last Answer : ANSWER: X -- DISORDER

Which of the following elements does not occur in nature as a native ore? w) silver x) gold y) platinum z) aluminum

Description : Which of the following elements does not occur in nature as a native ore? w) silver x) gold y) platinum z) aluminum

Last Answer : ANSWER: Z -- ALUMINUM

In which form is Silicon most frequently found in nature? w) The free element Silicon x) Silicon-Oxygen compounds y) Silicon-Carbon compounds z) Silicon-Metal compounds

Description : In which form is Silicon most frequently found in nature? w) The free element Silicon x) Silicon-Oxygen compounds y) Silicon-Carbon compounds z) Silicon-Metal compounds

Last Answer : ANSWER: X -- SILICON-OXYGEN COMPOUNDS

Which one of the following elements is not found in nature? w) Technetium x) Iridium y) Osmium z) Molybdenum

Description : Which one of the following elements is not found in nature? w) Technetium x) Iridium y) Osmium z) Molybdenum

Last Answer : ANSWER: W -- TECHNETIUM 

It is believed that carbon-14 in nature is slowly generated by the action of: w) protons on carbon-12 x) electrons on hydrogen y) cosmic rays on boron z) neutrons on nitrogen

Description : It is believed that carbon-14 in nature is slowly generated by the action of: w) protons on carbon-12 x) electrons on hydrogen y) cosmic rays on boron z) neutrons on nitrogen

Last Answer : ANSWER: Z -- NEUTRONS ON NITROGEN 

In general, as you move across a period (left to right) electronegativity: w) increases x) decreases y) remains the same z) increases or decreases

Description : In general, as you move across a period (left to right) electronegativity: w) increases x) decreases y) remains the same z) increases or decreases

Last Answer : ANSWER: W -- INCREASES

Gamma rays are similar to X rays in which of the following ways? w) they have neither rest mass nor charge x) they can be bent in an electric field y) they originate within the nucleus z) they are of low energy

Description : Gamma rays are similar to X rays in which of the following ways? w) they have neither rest mass nor charge x) they can be bent in an electric field y) they originate within the nucleus z) they are of low energy

Last Answer : ANSWER: W -- HAVE NEITHER REST MASS NOR CHARGE

To increase the solubility of a gas in a liquid as much as possible, we would use: w) low temperature and high pressure. x) high temperature and high pressure. y) high temperature and low pressure. z) low temperature and low pressure.

Description : To increase the solubility of a gas in a liquid as much as possible, we would use: w) low temperature and high pressure. x) high temperature and high pressure. y) high temperature and low pressure. z) low temperature and low pressure.

Last Answer : ANSWER: W -- LOW TEMPERATURE AND HIGH PRESSURE.

A cobalt chloride solution soaked into a piece of cotton can be used as an indicator for changes in humidity levels. Pink indicates a high-humidity environment and blue a low-humidity environment. What are these color changes caused by: w) The ionization and reduction of the cobalt plus two slash cobalt plus three couple. x) The vaporization and redeposition of cobalt chloride. y) The loss and readsorption of the cobalt's waters of hydration. z) This is an illustration of the Schrodinger principle.

Description : A cobalt chloride solution soaked into a piece of cotton can be used as an indicator for changes in humidity levels. Pink indicates a high-humidity environment and blue a low-humidity environment. What ... the cobalt's waters of hydration. z) This is an illustration of the Schrodinger principle.  

Last Answer : ANSWER: Y -- THE LOSS AND READSORPTION OF THE COBALT'S WATERS OF HYDRATION.

In the United States, low sulfur coal can be found primarily in the: w) northeast x) southeast y) midwest z) west

Description : In the United States, low sulfur coal can be found primarily in the: w) northeast x) southeast y) midwest z) west

Last Answer : ANSWER: Z -- WEST

Which one of the following is largest? w) the number of molecules in 2 grams of hydrogen gas x) the number of molecules in 60 grams of lead sulfate y) the number of molecules in 20 liters of oxygen gas at standard temperature and pressure z) the population of the United States

Description : Which one of the following is largest? w) the number of molecules in 2 grams of hydrogen gas x) the number of molecules in 60 grams of lead sulfate y) the number of molecules in 20 liters of oxygen gas at standard temperature and pressure z) the population of the United States

Last Answer : ANSWER: A - THE NUMBER OF MOLECULES IN 2 GRAMS OF HYDROGEN GAS  

In the United States, Grain alcohol is made: w) from coal x) by fermenting starches y) from methanol z) from vinegar e) by fermenting acetic acid

Description : In the United States, Grain alcohol is made: w) from coal x) by fermenting starches y) from methanol z) from vinegar e) by fermenting acetic acid

Last Answer : ANSWER: X -- BY FERMENTING STARCHES

The particle nature of light is demonstrated by which of the following? w) the photoelectric effect x) the various colors of light y) the speed of light z) diffraction.

Description : The particle nature of light is demonstrated by which of the following? w) the photoelectric effect x) the various colors of light y) the speed of light z) diffraction.

Last Answer : ANSWER: W -- THE PHOTOELECTRIC EFFECT

The photoelectric effect is a demonstration of: w) the wave nature of light x) the particle nature of light y) Compton scattering z) the continuous spectrum of radiation

Description : The photoelectric effect is a demonstration of: w) the wave nature of light x) the particle nature of light y) Compton scattering z) the continuous spectrum of radiation

Last Answer : ANSWER: X -- THE PARTICLE NATURE OF LIGHT 

The Grand Unified Theory of the forces of nature combines three of the four forces. Which force is NOT included? w) gravitational x) electromagnetic y) weak nuclear z) strong nuclear

Description : The Grand Unified Theory of the forces of nature combines three of the four forces. Which force is NOT included? w) gravitational x) electromagnetic y) weak nuclear z) strong nuclear

Last Answer : ANSWER: W -- GRAVITATIONAL

Diffraction and interference demonstrate which of the following? w) particle nature of light x) wave nature of light y) polarization of light z) refraction of light

Description : Diffraction and interference demonstrate which of the following? w) particle nature of light x) wave nature of light y) polarization of light z) refraction of light

Last Answer : ANSWER: X -- WAVE NATURE OF LIGHT

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

The Michelson interferometer was designed to study the nature of: w) water waves x) sound waves y) an "ether" z) sunlight

Description : The Michelson interferometer was designed to study the nature of: w) water waves x) sound waves y) an "ether" z) sunlight

Last Answer : ANSWER: Y -- AN "ETHER"

The wave nature of light is demonstrated by which of the following? w) the photoelectric effect x) color y) the speed of light z) diffraction

Description : The wave nature of light is demonstrated by which of the following? w) the photoelectric effect x) color y) the speed of light z) diffraction

Last Answer : ANSWER: Z -- DIFFRACTION

Biomass energy is w) formed through photosynthesis x) caused by heat due to the large mass of the Earth y) has been used for only a few years z) the predominant source of commercial heat energy in the northern regions of the United States

Description : Biomass energy is w) formed through photosynthesis x) caused by heat due to the large mass of the Earth y) has been used for only a few years z) the predominant source of commercial heat energy in the northern regions of the United States

Last Answer : ANSWER: W -- FORMED THROUGH PHOTOSYNTHESIS

Of the energy used in the United States, about wha percent is provided by hydroelectric power? w) 4% x) 20% y) 50% z) 75%

Description : Of the energy used in the United States, about wha percent is provided by hydroelectric power? w) 4% x) 20% y) 50% z) 75%

Last Answer : ANSWER: W -- 4%

In the United States, coal is the energy source that produces the highest percentage of our electricity. Second is: w) hydropower x) oil y) nuclear energy z) solar energy

Description : In the United States, coal is the energy source that produces the highest percentage of our electricity. Second is: w) hydropower x) oil y) nuclear energy z) solar energy 

Last Answer : ANSWER: Y -- NUCLEAR ENERGY

Biomass energy is: w) formed through photosynthesis x) caused by heat due to the large mass of the earth y) has been used for only a few years z) is effective in only certain regions of the United States

Description : Biomass energy is: w) formed through photosynthesis x) caused by heat due to the large mass of the earth y) has been used for only a few years z) is effective in only certain regions of the United States 

Last Answer : ANSWER: W -- FORMED THROUGH PHOTOSYNTHESIS 

Radioactive decay is a: w) zero-order process x) temperature-dependent process y) first-order process z) second-order process

Description : Radioactive decay is a: w) zero-order process x) temperature-dependent process y) first-order process z) second-order process

Last Answer : ANSWER: Y -- FIRST-ORDER PROCESS 

The noble gases have low boiling points because: w) their ionization potentials are very low x) only weak Van der Waals forces hold the atoms together y) they are produced by the fractional distillation of liquid air z) they have eight electrons in the outer shell

Description : The noble gases have low boiling points because: w) their ionization potentials are very low x) only weak Van der Waals forces hold the atoms together y) they are produced by the fractional distillation of liquid air z) they have eight electrons in the outer shell

Last Answer : ANSWER: X -- ONLY WEAK VAN DER WAALS FORCES HOLD THE ATOMS TOGETHER

Planck's constant was first introduced in order to obtain a correct theoretical prediction of: w) the distribution of frequencies occurring in black body radiation. x) the energy produced by the transformation of mass into energy. y) the speed of light. z) lifetime of the neutron.

Description : Planck's constant was first introduced in order to obtain a correct theoretical prediction of: w) the distribution of frequencies occurring in black body radiation. x) the energy produced by the transformation of mass into energy. y) the speed of light. z) lifetime of the neutron.

Last Answer : ANSWER: W -- THE DISTRIBUTION OF FREQUENCIES OCCURRING IN BLACK BODY RADIATION

Susan pushes against a 100 kilogram rock with a force of 5 Newtons, but the rock doesn't move. The force the rock exerts on Susan is w) 0 Newtons x) 5 Newtons y) 20 Newtons z) 100 Newtons

Description : Susan pushes against a 100 kilogram rock with a force of 5 Newtons, but the rock doesn't move. The force the rock exerts on Susan is w) 0 Newtons x) 5 Newtons y) 20 Newtons z) 100 Newtons

Last Answer : ANSWER: X -- 5 NEWTONS

What is a calorie? w) amount of heat required to raise one gram of water one degree Celsius. x) amount of work required to move one gram of water by one centimeter. y) amount of heat required to melt ice. z) amount of heat required to raise one gram of water one degree Fahrenheit

Description : What is a calorie? w) amount of heat required to raise one gram of water one degree Celsius. x) amount of work required to move one gram of water by one centimeter. y) amount of heat required to melt ice. z) amount of heat required to raise one gram of water one degree Fahrenheit

Last Answer : ANSWER: W -- AMOUNT OF HEAT REQUIRED TO RAISE ONE GRAM OF WATER ONE DEGREE CELSIUS

For a point charge to feel a net force in a homogeneous magnetic field, which one of the following statements is true? The charge must: w) move parallel to the magnetic lines of flux x) have a component of its motion perpendicular to the lines of flux y) be stationary z) be a positive charge

Description : For a point charge to feel a net force in a homogeneous magnetic field, which one of the following statements is true? The charge must: w) move parallel to the magnetic lines of flux x) have a component of its motion perpendicular to the lines of flux y) be stationary z) be a positive charge

Last Answer : ANSWER: X -- HAVE A COMPONENT OF ITS MOTION PERPENDICULAR TO THE LINES OF FLUX 

Standing waves are formed when two sets of waves of equal amplitude and frequency w) are in phase x) are in opposite phase y) move through each other in opposite directions z) are reflected from the same surface

Description : Standing waves are formed when two sets of waves of equal amplitude and frequency w) are in phase x) are in opposite phase y) move through each other in opposite directions z) are reflected from the same surface

Last Answer : ANSWER: Y -- MOVE THROUGH EACH OTHER IN OPPOSITE DIRECTIONS 

Two hockey pucks, of unequal mass and connected by a spring of negligible mass, rest on a horizontal frictionless surface. The spring is released, and the pucks move apart. The center of mass of the two pucks does one of the following. Does it: w) move in a circle x) move in the direction of the greater mass y) remain stationary z) move in the direction of the smaller mass

Description : Two hockey pucks, of unequal mass and connected by a spring of negligible mass, rest on a horizontal frictionless surface. The spring is released, and the pucks move apart. The center of mass of ... the direction of the greater mass y) remain stationary z) move in the direction of the smaller mass

Last Answer : ANSWER: Y -- REMAIN STATIONARY

A satellite is observed to move in a circle about the earth at a constant speed. This means that the force acting upon it is: w) zero x) parallel to the direction of the satellite's instantaneous velocity y) perpendicular to the direction of the satellite's instantaneous velocity z) none of the above

Description : A satellite is observed to move in a circle about the earth at a constant speed. This means that the force acting upon it is: w) zero x) parallel to the direction of the satellite ... velocity y) perpendicular to the direction of the satellite's instantaneous velocity z) none of the above

Last Answer : ANSWER: Y -- PERPENDICULAR TO THE INSTANTANEOUS DIRECTION OF THE SATTELITE’S VELOCITY

As a longitudinal wave moves through a medium, the particles of the medium: w) vibrate in a path parallel to the path of the wave x) vibrate in a path perpendicular to the path of the wave y) follow the wave along its entire path z) do not move

Description : As a longitudinal wave moves through a medium, the particles of the medium: w) vibrate in a path parallel to the path of the wave x) vibrate in a path perpendicular to the path of the wave y) follow the wave along its entire path z) do not move

Last Answer : ANSWER: W -- VIBRATE IN A PATH PARALLEL TO THE PATH OF THE WAVE  

Which of the following is the name of the partly melted rock layer on which the plates move? w) lithosphere x) asthenosphere y) hydrosphere z) outer core

Description : Which of the following is the name of the partly melted rock layer on which the plates move? w) lithosphere x) asthenosphere y) hydrosphere z) outer core

Last Answer : ANSWER: X -- ASTHENOSPHERE

Most of the nuclear power plants operating in the United States are: w) pressurized water reactors x) boiling water reactors y) high-temperature gas-cooled reactors z) liquid-metal fast breeder reactors

Description : Most of the nuclear power plants operating in the United States are: w) pressurized water reactors x) boiling water reactors y) high-temperature gas-cooled reactors z) liquid-metal fast breeder reactors

Last Answer : ANSWER: W -- PRESSURIZED WATER REACTORS 

Two infinitely long, parallel wires carry currents which are in opposite directions. The two wires: w) are attracted toward each other x) repel each other y) have no effect on each other.

Description : Two infinitely long, parallel wires carry currents which are in opposite directions. The two wires: w) are attracted toward each other x) repel each other y) have no effect on each other.

Last Answer : ANSWER: X -- REPEL EACH OTHER

A small cluster of stars appear, after many decades of observation, to be converging toward a common point in the sky. Does the light from these stars show a: w) red Doppler shift x) blue Doppler shift y) no Doppler shift

Description : A small cluster of stars appear, after many decades of observation, to be converging toward a common point in the sky. Does the light from these stars show a: w) red Doppler shift x) blue Doppler shift y) no Doppler shift

Last Answer : ANSWER: W -- RED DOPPLER SHIFT 

A transformer has a turns ratio of two to one. If a 100 ohm resistor is connected on the high side, its resistance as measured on the low side would be: w) 25 ohms x) 50 ohms y) 100 ohms z) 400 ohms

Description : A transformer has a turns ratio of two to one. If a 100 ohm resistor is connected on the high side, its resistance as measured on the low side would be: w) 25 ohms x) 50 ohms y) 100 ohms z) 400 ohms

Last Answer : ANSWER: W -- 25 OHMS