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Physics

The elbow is considered a third class lever because __________. a. the effort is applied further from the fulcrum than the load b. the effort is applied closer to the fulcrum than the load c. the fulcrum is in the center of the lever d. the elbow is used to lift objects

Chelsea Hayes

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Which is the best analogy of a wave? a. A wave is like building a ramp. b. A wave is like shaking a hand. c. A wave is like water rippling in a pond. d. A wave is like knocking down a building.

Cynthia Baker

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When returning from sea a green navigational buoy should be passed in what manner?

Roger Moore

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Which statement about the inner and outer planets is true? a.The inner planets revolve and rotate slower than the outer planets. b.The inner planets revolve and rotate faster than the outer planets. c.The inner planets revolve slower and rotate faster than the outer planets. d.The inner planets revolve faster and rotate slower than the outer planets.

Nicholas Rivera

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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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In the following lever system, what is the clockwise torque? Download gif

Daniel King

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What will the resistance be for a lamp that draws 4.6 amps of current from a 120-volt outlet? A. 550 ohms B. 115 ohms C. 26 ohms D. 0.038 ohms E. 5.7 ohms

Kevin Sutter

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He fact that mercury has no atmosphere is evidence that it ____

Donald Ward

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A crucial characteristic of turbines in tidal generators is that _____.

Megan Page

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In 2 or 3 sentences, describe how antitrust laws encourage competition.

William Cain

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A tennis ball connected to a string is spun around in a vertical, circular path at a uniform speed. The ball has a mass m = 0.16 kg and moves at v = 5.33 m/s. The circular path has a radius of R = 1.13 m. What is the minimum velocity so the string will not go slack as the ball moves around the circle?

Mindee Nelson

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An atom that gains or loses an electron has a net electric charge and is called a/n a. proton. b. ion. c. electron. d. neutron. user: which sentence best describes mass movement? a. the steady pace of air bouncing off a mountain b. the downhill movement of animals due to heavy snow in their normal home c. the movement of particles within an atom d. the downhill flow of soil and rock resulting from gravity

Chelsea Hayes

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Mosses are located in which zone of deciduous forests

Ralph Lopez

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Which of the following does not take place in the water cycle? a. precipitation b. evaporation c. carbonation d. condensation

Mindee Nelson

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Which of the following examples illustrates static friction in action? A.a ball rolling down a hill B.a skater gliding across the ice C.a plane flying through the air D.a car starting to move after the light changes from red to green

Rodney Fox

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

Blair Lewis

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Which statement correctly describes the relationship between power, voltage, and current? If voltage is increased, and no other changes are made, power will decrease. If voltage is increased, and no other changes are made, power will increase. If current is decreased, and no other changes are made, power will increase. In order to decrease power, voltage must be decreased.

Jessie Thompson

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A container of gas is at a pressure of 1.3x10^5 Pa and a volume of 6 m^3. How much work is done by the gas if it expands at a constant pressure to twice its initial volume.

Annie Barnes

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The length of a copper wire is 1.6 centimeters (cm). What is the length of this wire in meters (m)?

Zach Chandler

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A center-seeking force related to acceleration is _______ force A. centrifugal B. centripetal C. frictional D. gravitational

Karen Wright

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Which direction does air flow within a cyclone? a. Air rises. b. Air sinks. c. Air flows laterally. d. Air does not move in a cyclone.

Mindee Nelson

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Stars are able to form from clouds of dust and gas because of. A) The Law of Entropy. B) The Law of Propulsion. C) The Law of Universal Gravitation. D) The Law of Stellar Evolution

Annie Barnes

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When moored to a dock, what should you do before casting off while you warm up the engine?

Jeffrey Rodriguez

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What can be said about this magnetic field illustration? Download png

Deborah Edwards

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The law of conservation of mass is important in ecology because _________.

Ronald Miller

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The ability of solid rock to flow is called _____. convection plasticity seafloor spreading seismology

Jeffrey Rodriguez

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Which of the following are true statements about electronegativity? Check all that apply. A. A very electronegative atom gives up electrons quickly in reactions. B. Electronegativity increases as the number of protons in an atom decreases. C. Electronegativity is the ability of an atom to attract electrons. D. Electronegativity tends to be higher in nonmetals than in metals.

Ronald Miller

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Which item is not considered electromagnetic energy?

Alexa Spicer

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What part of the body is damaged by a sprain? A) Ligament B) Bone C) Muscle D) Tendon

Alexa Spicer

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Fossil formed when an outline of the original organism is formed from left-over carbon

Kevin Sutter

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Being rejected by a peer group can negatively influence one's self-esteem.

Tara Andrews

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The temperature of refrigeration units, salad bars and other cold items must be kept at ____ or colder: a. 41 f (5 c) b. 45 f (9 c) c. 50 f (10 c) d. 35 f (2 c)

Kaitlin Dean

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

Tara Andrews

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What portion of the electromagnetic spectrum can human eyes detect? A. visible light B. visible light and infrared light C. infrared light D. infrared light and ultraviolet light

Alexa Spicer

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Gems called rubies are used in lasers.

Caroline Campbell

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Of the following machines, which is not related to the others? ramp screw lever

Amanda Johnson

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1. Acceleration is best defined as the rate of change of __________ of an object. A. position B. force C. speed D. velocity 2. Which of the following describes acceleration? A. s/m B. m/s C. m/s2 D. m2 3. Which of the following is the main difference between speed and velocity? A. Speed has direction and velocity B. Speed is measured over time C. Velocity has both speed and direction D. Speed is constant

Bethany Evans

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In order to be considered work, the components that must be present are a force and a movement in the same direction as the force. an action which causes movement and an opposite reaction. an action which causes no movement or reaction. a force and a movement in the opposite direction of the force.

Daniel King

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Einstein’s postulate that concerns the speed of light is that rulers and clocks cannot be used to measure the speed of light nothing can travel faster than the speed of light all uniformly moving observers measure the same speed of light the speed of light is defined as 3 E8 m/s

William Cain

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The compound LiBr is an example ofA. metallic compoundB. covalent compoundC. ionic compoundD. element

Jeremy Wood

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Increasing the mass attached to a spring will increase its vibrational period. True or false? ...?

Jessie Thompson

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A student runs 100 meters in 11 seconds. What is the speed of the student? Use the following formulas: speed = distance/time; 1 mile = 1609 meters A.) 9.1 miles per hour B.) 16 miles per hour C.) 20.3 miles per hour D.) 24 miles per hour

Bethany Evans

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Energy that is not passed on from one trophic level to the next is _______.. a. lost as heat. b. returned to the sun. c. destroyed. d. all of the above.

Annie Barnes

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Which example involves the transformation of chemical energy directly into light energy? A) a wind mill B) a glow stick C) photosynthesis D) a hydroelectric dam (I'm pretty sure it's b, but just want to make sure)

Melissa Norris

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A composition of two isometries results in __________. A. an increase in size B. preservation of length C. the same orientation D. a reduction in size

Kathy Robinson

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Plants can only cause mechanical weathering. true or false.

Donald Ward

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If you are given time and distance, you can determine power if you know force. watts. energy. joules.

Bethany Evans

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Which statement describes the relationship of resistance and current? 1.Resistance is directly proportional to current because R = . 2.Resistance is inversely proportional to current because R = . 3.Resistance is directly proportional to current because R = VI. 4.Resistance is inversely proportional to current because R = VI.

Kyle Mckinney

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