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Physics

The energy derived from the digestion of food is __________. a. kinetic energy b. inertia c. momentum d. chemical energy

Bethany Evans

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What kind of motion indicates a system where the net force equals zero only accelerating objects only stationary objects both accelerating and stationary objects only objects moving with a constant positive velocity stationary objects as well as objects moving with a constant velocity

Kevin Sutter

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Which statement about electrons and atomic orbitals is NOT true? An electron has the same amount of energy in all orbitals. An orbital can contain a maximum of two electrons. An electron cloud represents all the orbitals in an atom. An atom’s lowest energy level has only one orbital.

Jennifer Patterson

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A star that appears to pulsate is called a

Deborah Edwards

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To increase the brightness of a desk lamp, a student replaces a 50-watt incandescent lightbulb with a 100-watt incandescent lightbulb. Compared to the 50-watt lightbulb, the 100-watt lightbulb has (1) less resistance and draws more current (2) less resistance and draws less current (3) more resistance and draws more current (4) more resistance and draws less current

William Cain

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Krishne wants to measure the mass and volume of a key. Which tools should she use? a balance and a beaker of water a balance and a meter stick a beaker of water and a ruler a ruler and a meter stick

Tara Andrews

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The _____ is the region of the Sun where energy moves through circulating currents of gases. photosphere, corona, core, radiative zone, chromosphere, or convective zone

Theresa Perry

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Clothes in a dryer acquire static cling by a. friction. b. conduction. c. induction. d. static discharge.

Nicholas Rivera

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

Amanda Johnson

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In which situation is the object experiencing unbalanced forces? A) A box resting on a horizontal floor. B) A car slowing as it reaches a traffic light. C) A car with its cruise control set to 30 km/h. D) A penny at terminal velocity after falling off of a building.

Heather Maxwell

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T or f Halogens are the basis of all fossil fuels.

Annie Barnes

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Proper nutrition improves a person's mental alertness. True or False?

Annie Barnes

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Two polarizers are arranged as shown. How much light will reach point X? 0% less than 50% but more than 0% 50% 100%

Dana Keller

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Which is an example of natural erosion? ice forming in cracks of rocks acid rain falling on sidewalks waves washing over rocks on the beach water washing away soil in an area with off-road vehicles

Jeremy Wood

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Heat can never flow from __________. a. hot to cold b. cold to hot c. liquid to solid d. solid to liquid

Ashley Howard

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Why are objects that fall near Earth’s surface rarely in free fall?

Blair Lewis

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Which scientist would best describe the motion of the earth? Ptolemy Brahe Kepler Newton

Victoria Fowler

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What would we need to know to calculate both work and power? (2 points) energy, force, and time force, distance, and time force, mass, and distance mass, force, and energy

Jennifer Patterson

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Which of the following statements is a consequence of the equation E = mc2? A. Energy is released when matter is destroyed. B. Mass and energy are equivalent. C. The law of conservation of energy must be modified to state that mass and energy are conserved in any process. D. all of the above

Jodi Brooks

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Depletion to the ozone layer can cause changes to the biogeochemical cycles. True of False

Nicholas Rivera

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In order for work to take place Select one: A. the energy present must be related to the movement of the object. B. the force applied must be a balanced force resulting in motion of the object. C. the force applied must cause the movement of the object in the same direction as the force. D. the movement of the object must be the cause of the force.

Tara Andrews

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8.Why are objects that fall near Earth’s surface rarely in free fall? Gravity does not act on objects near Earth’s surface. Air exerts forces on falling objects near Earth’s surface. The objects do not reach terminal velocity. The objects can be pushed upward by gravity.

Mindee Nelson

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A metal bolt with a mass of 8.50 x 10^-2kg and a temperature of 85.0 degrees Celsius is placed in a container of water. The mass of the water is 0.150 kg, and its temperature is 25.0 degrees Celsius. What is the specific heat capacity of the bolt if the final temperature of the bolt and water is 28.4 degrees Celsius? (Cp.w = 4186 j/k* degree Celsius)

Ashley Howard

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A player with a positive attitude toward officials demonstrates which of the following

Jessie Thompson

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Why would you expect sodium (Na) to react strongly with chlorine (Cl)? 1. They both need to lose one electron. 2. They both need to gain one electron. 3. Sodium needs to lose one electron, and chlorine needs to gain one electron. 4. Sodium needs to gain one electron, and chlorine needs to lose one electron.

Kathy Robinson

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Most irregular galaxies are thought to have formed _____

Kathy Robinson

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A small dog is trained to jump straight up a distance of 1.2 m. How much kinetic energy does the 7.2-kg dog need to jump this high? (The acceleration due to gravity is 9.8 m/s².) 85 J 18.2 J 9.8 m/s There is not enough information.

Daniel King

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Which rigid transformation would map abc to edc? a rotation about point b a reflection across the line containing cb a reflection across the line containing ac a rotation about point c?

Amanda Johnson

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Newton’s prism experiments showed that white sunlight is made up of ... A-the full electromagnetic spectrum.. B-only blue light.. C-all the colors of the visible spectrum.. D-only the longest wavelengths.

Theresa Perry

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Which of these barbells has the smallest rotational inertia when rotated as shown? The arrow shows the axis and the way that torque is applied. Assume the weights positioned on the barbells all have the same mass.

Caroline Campbell

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Which scenario best describes motion? a toy train in position 4 on a number line a race track that is 100 meters long a ball rolling from point A to point B a student living 150 miles from Chicago

Amanda Johnson

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Cultures use shaping in order to __________. A. mold the behavior of people within the culture B. reinforce individuals’ private behaviors C. design appropriate punishments for behavior D. collect information on cultural preferences

Bethany Evans

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Which is an example of transforming potential energy to kinetic energy? Check all that apply. changing thermal energy to electrical energy changing chemical energy to thermal energy changing nuclear energy to radiant energy changing radiant energy to electrical energy changing mechanical energy to chemical energy

Brandon Scott

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When a wire is made smaller, the resistance increases. Which happens to the electric current? A) The current decreases. B) The current increases. C) There is no effect on the current

Kevin Sutter

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Which of the following statements is a consequence of the equation E = mc2? A Energy is released when matter is destroyed. B Mass and energy are equivalent. C The law of conservation of energy must be modified to state that mass and energy are conserved in any process. D all of the above

Jennifer Patterson

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A sea arch is formed through wave erosion. a. True b. False

Cynthia Baker

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1. The path of motion of a thrown javelin is an example of (blank) motion. 2. The acceleration of an object is equal to net (blank) acting on the object dividing by the objects (blank) 3. The pressure exerted by a fluid at any given depth is exerted (blank) in all directions. 4. A 38 kg canoe broke free of its dock and is now floating at a speed of 2.2 m/s. What is the canoe's momentum? 5. please explain this equation in words.

Ashley Howard

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One degree Celsius indicates the same temperature change as? A. One degree Fahrenheit B. 5/9 degree Fahrenheit C. One Kelvin D. 9/5 Kelvin

Jessie Thompson

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A balloon filled with helium gas has an average density of

Rodney Fox

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Most of the circuits in your home are a. parallel circuits. b. switch circuits. c. series circuits. d. reversible circuits.

Timothy Norman

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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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During a breath, the average human lung expands by about 0.50 l. part a if this expansion occurs against an external pressure of 1.0 atm, how much work (in j) is done during the expansion?

Rodney Fox

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For INELASTIC collisions, which of the following statements can be true? Choose all that apply. Momentum is conserved. Momentum is lost. Kinetic energy is lost. Momentum is gained. Kinetic energy is conserved. Kinetic energy is gained.I put a and c and it says it wrong down to my last tries.

Brandon Scott

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This example provides a complete scientific description of an object in motion. A. The marble changed position quickly B. The car traveled north C. The marble moved 30 cm north in 6 seconds D. The ball rolled 20 cm in 5 seconds

William Cain

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