Physics

Which of the following statements describes an anticyclone? a. It is an area of low pressure. b. It is an area of high pressure. c. It has air masses that meet and rise. d. It moves in the direction of the Earth’s rotation.

Daniel King

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Which best describes a radioactive isotope? (A) An atom is unstable. (B)An atom is stable. (C)There is only one other isotope. (D)There are many isotopes

Ramon Kelly

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Which factors affect heat transfer between a warm and a cool substance?

Donald Ward

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A parachute works because the canvas of the parachute is acted upon by __________.

Heather Maxwell

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Radioactive decay can involve electrons. T or F

Bethany Evans

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What environmental factor does the pyramid of energy incorporate that prevents it from inverting?

Craig Stewart

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In the formula vy = ayt, what is the value of ay for an object in projectile motion? A –9.8 m/s2 B 0 m/s2 C m/s2 D 1.0 m/s2

Victoria Fowler

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Most tornadoes carry wind speeds that range from A. 267 to 322 km per hour. B. 1 to 105 km per hour. C. 178 to 266 km per hour. D. 105 to 177 km per hour.

Jodi Brooks

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Ho Chi Minh led the Communist forces in Indochina and in North Vietnam. a. True b. False Hitler and Mussolini headed two of the Axis powers of World War II. a. True b. False

Kathy Robinson

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Your boat capsizes but remains floating upside down. what should you do?

Justin Parker

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The allowed energies of a quantum system are 1.0 ev, 2.0 ev, 4.0 ev, and 7.0 ev. what wavelengths appear in the system's emission spectrum

Chelsea Hayes

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Which characteristic is given by the principal quantum number? a)orbital size b)orbital mass c)orbital shape d)orbital orientation

Tara Andrews

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The metric unit of force is _____. User: The metric unit of force is _____. kg kg/cm 3 kg/cm 2 N

Bethany Evans

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What is BEST to say about a runner who is running at a constant velocity? A. Their acceleration is positive. B. Their acceleration is negative. C. Their acceleration is zero. D. Their acceleration cannot be determined.

Carlton Burgess

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The cloud of interstellar dust and gas that forms a star is known as a A. protostar. B. white dwarf. C. red giant. D. nebula. User: 15. With an average surface temperature of about 737 K, _______ is the hottest planet. A. Mars B. Mercury C. Earth D. Venus

Jeffrey Rodriguez

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How much work is required to move an electron through a potential difference of 3.00 volts? (1) 5.33 × 10^–20 J (3) 3.00 J (2) 4.80 × 10^–19 J (4) 1.88 × 10^19 J

Eric Morgan

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If the absolute temperature of a gas is 600 K, the temperature in degrees Celsius is a. 873°C. b. 705°C. c. 327°C. d. 273°C.

Nicholas Rivera

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Which are the components of a typical refracting telescope? hints?

Jennifer Patterson

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What is the station's orbital speed? the radius of earth is 6.37×106m, its mass is 5.98×1024kg.

Jennifer Patterson

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A _______ is a rhythmic movement that carries energy through space or matter.

Carlton Burgess

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The weakest agent of erosion a. water c. chemical weathering b. heat d. wind

Carlton Burgess

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In a stringed musical instrument, the sound frequency of a particular string can be increased by A. tightening the string. B. increasing the string's thickness. C. loosening the string. D. lengthening the string.

Whitney Matthews

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An exercise program that lacks specific goals is failing what fitness principle?

Eric Morgan

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What increases when a wave period decreases.

Kathy Robinson

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In general, metalloids are slightly reactive. Please select the best answer from the choices provided T F

Curtis Rhodes

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Which of the following is a poor conductor of heat?. A. silver. B. aluminum. C. gold. D. copper. E. air. How can you tell the difference if its a poor conductore or not?o.o

Craig Stewart

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Which part of the ear sends coded nerve signals to the brain?

Kyle Mckinney

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Which compound is an exception to the octet rule? H2O HCl CCl4 ClF3

William Cain

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Which statement is true regarding the "relationship merry-go-round"? A. Most people chose to remain single in order to pursue career goals. B. By the age of 40, about 75% of Americans have married at least once. C. In some cultures, romantic love was considered a form of madness. D. Arranged marriages are no longer the norm in India.

Theresa Perry

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At a constant pressure, freezing occurs by A)absorbing energy B)releasing energy C)conducting energy D)circulating energy.

Karen Wright

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You can use the curved part of a spoon as a mirror because it

Melissa Norris

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Which is not a way to conserve existing energy resources? a) explore nuclear fusion b) improve solar technology c) use available fossil fuels d) increase energy efficiency

Kristi Hammond

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The smallest unit of an element that has all of the properties of the element is a/an

Jeremy Wood

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What were the key factors that made the wright brothers’ wind tunnel a useful tool for wing design?

Mindee Nelson

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"I don't smoke because my mom would ground me," is an example of diverting the pressure.

Jeremy Wood

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The shortest wavelength within the visible spectrum is _______ light.

Megan Page

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If a star has no measurable parallax what can you infer ?

Kaitlin Dean

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Which change increases the electric force between objects? -Two neutral objects are moved closer together. -Electrons are added to two negatively charged objects. -Two oppositely charged objects are moved farther apart. -The charge on two positively charged objects is reduced.

Ramon Kelly

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What is the current widely accepted theory about global climate change and what are some predictions associated with it?

Eric Morgan

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The existence of quantized energy levels in an atom can be inferred from

Daniel King

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Which of these most directly affects what happens to white light when it hits an object? the properties of the object the source of the light the speed at which the light travels the distance of the object from the light

Roger Moore

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During adverse weather conditions such as rain or fog, drivers should take action accordingly by turning on their headlights, slowing down and increasing

Kristi Hammond

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True or false Valuable, rare minerals known as titanium are often used in jewelry

Jennifer Patterson

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At approximately what frequency do most people perceive the least intense sounds? enter your answer numerically in hertz to two significant figures.

Whitney Matthews

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What does the zigzag line in the circuit diagram represent? A. a source of electrical energy B. an electrical conductor C. an electrical resistor D. an open switch

Melissa Norris

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Electrons are charged particles. the amount of charge that passes per unit time is called

Eric Morgan

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A wave with a period of 0.008 second has a frequency of A. 12.5 Hz. B. 800 Hz. C. 80 Hz. D. 125 Hz.

Heather Maxwell

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When viewed from Earth, Mars appears to change colors. This most likely happens because A. gases in the dense Martian atmosphere are constantly changing. B. volcanic activity produces thick gas clouds. C. dust storms lasting for weeks cause the atmosphere to change color. D. active volcanoes on the Mars surface intermittently flood the surface with lava.

Melissa Norris

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What instrument did navigators use to calculate the positions of the sun and the stars? a caravel a carrack an astrolabe a compass

Carlton Burgess

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A thermogram identifies the warm and cool parts of an object by using

Craig Stewart

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