Physics

What element x is most likely to react to form the compound xf5?

Tara Andrews

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A laser pointer used in a lecture hall emits light at 650 nm what is the frequency

Amanda Johnson

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During nuclear fission and fusion matter that seems to disappear is actually converted into

Annie Barnes

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Magma that cools and crystallizes on Earth's surface forms A. quartz. B. marble. C. intrusive rocks. D. extrusive rocks.

Jeffrey Rodriguez

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Two meteoroids are heading for earth. their speeds as they cross the moon's orbit are 1.0 km/s . part a the first meteoroid is heading straight for earth. what is its speed of impact?

Mindee Nelson

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If the organ pipe is cut in half, what is the new fundamental frequency? if the organ pipe is cut in half, what is the new fundamental frequency? 4f0 2f0 f0 f0/2 f0/4

Jeffrey Rodriguez

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Which of the following energy sources is expected to have the highest rate of consumption in 2030? a. coal b. natural gas c. nuclear d. renewable energy

Cynthia Baker

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Which of the following is a typical product of nuclear fission? a. oxygen b. carbon dioxide c. radiation d. water

Kevin Sutter

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Can track storms at different altitudes

Caroline Campbell

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Nuclear reactions result in tremendous amounts of a. uranium. b. energy. c. fission. d. mass.

Victoria Fowler

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Tides are a result of A. currents in the ocean. B. strong winds in the equatorial regions. C. friction caused by the Earth's rotation. D. the gravitational attraction of the Sun and Moon

Bethany Evans

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How are the careers of an oceanographer and hydrologist similar? How are they different?

Tara Andrews

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List three important characteristics of Earth.

Kristi Hammond

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Which statement best describes the properties of sodium chloride? A. high melting point B. poor conductor of electric current when melted C. tendency to not shatter when struck D. all of the above

Brandon Scott

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Energy from the sun reaches Earth mostly by ________. A.) conduction B.) convection C.) radiation D.) thermal expansion

Kevin Sutter

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Air is forced through the water to remove gases is called?

Amanda Johnson

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A balloon filled with helium gas has an average density of

Rodney Fox

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If the vertical component of velocity for a projectile is 7.3 meters/second, find its hang time.

Megan Page

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One consequence of the third law of thermodynamics is that

Ramon Kelly

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Photons travel outward from a light bulb in

Eric Morgan

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What lever has resistance between the axis (fulcrum) and the force (effort)? a. first b. second c. third d. fourth

Kaitlin Dean

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Niobium has a density of 8.57 g/cm3 and crystallizes with the body-centered cubic unit cell. Calculate the radius of a niobium atom.

Caroline Campbell

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Communities of organisms coexist in organized, balanced _____? A-ranges B-territories C-ecosystems D-populations

Jodi Brooks

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The position of a 2.75×105n training helicopter under test is given by r⃗ =(0.020m/s3)t3i^+(2.2m/s)tj^−(0.060m/s2)t2k^. part a find the net force on the helicopter at t=5.0s.

Justin Parker

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An electron is located in an electric field of magnitude 600. newtons per coulomb. what is the magnitude of the electrostatic force acting on the electron?

Timothy Norman

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Calculate the displacement of the volleyball in sample problem 2f when teh volleyballs final velocity is 1.1 m/s upward

Melissa Norris

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What is a heat pump? Why does it need to put in external work? Help ASAP!

Kaitlin Dean

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Classify the following substance as diamagnetic or paramagnetic based on its magnetic properties. Drag the appropriate items to their respective bins. Download png

Theresa Perry

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The gravitational potential energy of an object Is always measured relative to the

Megan Page

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Which of the following is the best definition of inertia? Objects resist changes in their state of motion. Objects at rest easily start to move. Objects in motion resist changes in acceleration. Objects in motion resist gravity.

Jennifer Patterson

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Which part of the coffee cup calorimeter system could have more heat leaks?

Carlton Burgess

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A rocket is launched straight up from the earth's surface at a speed of 1.80×104 m/s .part awhat is its speed when it is very far away from the earth?

Curtis Rhodes

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White lights can sometimes be found on what kind of buoys

Ashley Howard

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Basketball is a(n) __________ activity. A. unstructured, competitive, and group B. unstructured, recreational, and solo C. structured, recreational, and group D. structured, competitive, and group

Blair Lewis

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Which of these are considered an oxidizing mutagenic agent? a. x-rays b. benzopyrene c. gamma rays

Kathy Robinson

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

Jennifer Patterson

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What do electric forces between charges depend on? a. the quantity of charge involved b. how far apart the charges are. c. both a. and b. d. none of the above

Amanda Johnson

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It is best to say that efficient plumbing _______. a. reduces water pollution by using less water b. reduces water pollution by using cleaner water c. increases water pollution by using more water

Kristi Hammond

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

Donald Ward

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

Jennifer Patterson

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

Carlton Burgess

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

Mindee Nelson

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