Physique
Cinématique, forces, électricité et raisonnement par équations.
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question 9 of 10 a scientist helps a colleague do a better experiment b…
A. providing a warning about a common mistake.
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question 3 of 10 which of the following describes a benefit of membersh…
D. Knowledge and valuable resources are shared among scientists.
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question 1 of 10 which of the following is the goal of the peer review …
B. A fair assessment of an experiment
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a river flows due south at 1.6 mi/h, and a swimmer attempts to cross th…
\(23.6^{\circ}\)
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t/f (correct to true if false) 1. the higher the energy of an em wave, …
1. False 2. True 3. False 4. False 5. True 6. True 7. True 8. False 9. False 10. False 11. False 12. True 13. True 14. True
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question 12 · 1 point a higher velocity of money means that the average…
more times
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7. a student accidentally touches a cold metal surface. their hand pull…
A. Nervous and muscular
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directions: complete the graphic organizer below. lesson 1: the rise of…
Natural Resources: Timber and minerals, Water. Inventions and Innovations: Steam - powered machinery, Advances in communication and technology. Railroads: Spurred industrial growt…
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question 11 many charities use advertisements that have a strong emotio…
D. Peripheral route persuasion
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identifying geologic processes used in relative dating geologists use t…
Cross - cutting features are always younger than the surrounding rock. When material erodes before sediment is deposited on it, a geologic gap results.
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consider this claim: snakes make great pets because they are clean, low…
Snakes are too dangerous to keep as pets because cobras and rattlesnakes have deadly, venomous bites.
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kaiparowits plateau glen canyon use the law of superposition to choose …
- For the question "Which layer is older than Layer 6?": Layer 7 - For the question "Which layers are younger than Layer 4?": Layers 1, 2, 3 - For the question "Which layers were …
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what was the social impact of the decision in brown v. board of educati…
It strengthened the growing civil rights movement.
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mario and patience are making cookies. they are ready to drop balls of …
Copper
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feathered and fearless toward the end of world war i (1914 - 1918), bat…
C. The Lost Battalion emerged safely from the Argonne Forest, thanks to homing pigeon Cher Ami.
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describing thermal equilibrium what occurs at thermal equilibrium? heat…
Heat does not flow because both substances are at the same temperature.
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how were the persians similar and different from the assyrians?
Similarities: Both had large military forces and built extensive empires. Differences: Persians had a more lenient rule allowing local cultures to thrive; Assyrians were often mor…
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energy law of conservation of energy (achieving) practice it! select th…
Point A is the greatest PE, point B is PE, point C is the greatest KE.
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select the picture(s) that accurately illustrate kinetic energy. going …
Going down the hill, going into a loop, almost to the bottom of the hill.
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identifying direction of heat flow indicate the direction of heat flow …
Scenario A: toward object 1 Scenario B: toward object 2 Scenario C: toward object 1 Scenario D: toward object 1
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identifying direction of heat flow indicate the direction of heat flow …
Scenario A: Skin to Lotion Scenario B: Lasagna to Plate Scenario C: Lava to Ocean water Scenario D: Sidewalk to Eggs
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energy law of conservation of energy (achieving) practice it! which of …
Potential energy is being stored.
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kinetic energy is being stored. potential energy is being stored. poten…
Potential energy is being stored.
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summarize it! drag and drop the words or phrases that accurately comple…
First blank: potential, Second blank: stored, Third blank: in motion.
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improvement. is there evidence that improvement was related to the type…
C. Yes, because the same number of people took each medicine and the percent of people who reported improvement that took Medicine A was greater than Medicine B.
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read the excerpt from part 1 of the odyssey. my men were mutinous, fool…
Soldiers must be wary of their enemies.
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the circle graph shows information about germanys labor force in 2011. …
Most Germans work in services.
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fill in the blank question the force exerted on one surface by a second…
kinetic friction
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the zika virus is a disease spread mainly by an infected species of mos…
Cause: Zika symptoms are similar to those of other diseases. Effect: Many Zika cases may have been misdiagnosed. Cause: Zika symptoms are mild. Effect: Many people don't realize t…
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hot coffee in a mug cools over time and the mug warms up. which describ…
Thermal energy from the coffee is transferred to the mug.
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what happens when heat is removed from water? the water particles move …
The kinetic energy of the water particles decreases.
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barbara is converting 78°f to degrees celsius. first, she subtracts 32 …
multiply 46 by 5/9
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law of conservation of energy (developing) practice it! select the stat…
- When the ball reaches the bottom of the hill, it will not have any more gravitational potential energy. - Potential and kinetic energy transform into other forms of energy as th…
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improvement. is there evidence that improvement was related to the type…
A greater percent of people given Medicine A saw an improvement.
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two mugs of tea were made and their temperatures measured. which statem…
The particles in mug A are moving more slowly.
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practice it! an image of a roller coaster track and cart is shown. whic…
A. A
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practice it! which of the following identifies the positions with high …
A. Option A, E. Option E
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practice it! select the image(s) that illustrate potential energy. pict…
Pictures A and D
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1. jania is thinking about buying a new car. she sees a commercial with…
1a. A. Source Credibility 1b. A. lasting
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1. iania is thinking about buying a new car. she sees a commercial with…
1a. A. Source Credibility of the spokesperson 1b. B. temporary
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the motion of the particles in the substance increases, and the tempera…
Both the motion of the particles in the substance and the temperature of the substance increase.
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sayid recorded the temperatures of four substances in a chart. temperat…
The particles in substance W have a lower average kinetic energy than the particles in substance X.
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which is equal to a temperature of 50°f? 18°c 46°c 10°c 32°c
$10^{\circ}C$
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juan measured the temperature of salt water. he then added 273 temperat…
degrees Celsius to kelvins
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the diagram shows a thermometer used to measure temperature. which refe…
scale
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converting temperature readings christopher conducts an experiment in w…
\(305.7\)
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temperature and thermal energy ssignment active converting temperature …
14
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differentiating temperature scales which scale is being described? wate…
1. Fahrenheit scale 2. Celsius scale 3. Kelvin scale
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which temperature scale has the highest value for the boiling point of …
Kelvin scale.
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read the passage from the opinion of the court in dred scott v. sandfor…
Taney’s argument that Blacks were not citizens is false because their ancestors were forced to come here.
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sample response: yes, his graph is correct because it shows that as the…
- As average kinetic energy increases, temperature also increases. - The graph shows a direct relationship between average kinetic energy and temperature.
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which of these would have the lowest kinetic energy? boiling water ice …
ice water
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select the statement(s) that accurately support the law of conservation…
All the statements (Eating a candy bar gives a person the electromagnetic energy they need to convert to mechanical energy to walk; The law of conservation of energy states that e…
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which of the following is the best explanation of the transformation of…
The first option: The coaster car has 100% potential energy at the \(X\) and as it goes to \(Y\) the coaster car increases the kinetic energy because it is going fast. Energy is n…
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things fall apart — chapter 2 (pages 9 - 15) by chinua achebe independe…
1. D. Powerful 2. B. Changing moods or behavior suddenly 3. A. Nwoye shows signs of failure and laziness 4. C. "Near the barn was a small house, 'the medicine house' or shrine whe…
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the mechanical advantage of a machine may be less than, equal to, or gr…
A. TRUE
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how is the actual mechanical advantage of a machine calculated? actual …
actual mechanical advantage = output force/input force
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select the statement(s) that accurately describe either potential or ki…
B. An example of kinetic energy is a person jumping rope. C. Potential energy is energy that is stored in an object. D. Kinetic energy is energy in motion.
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identifying energy what kind of energy can be transferred? energy
Thermal
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the actual mechanical advantage of a machine is always greater than the…
FALSE
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the equation for calculating ideal mechanical advantage is a ideal mech…
A. Ideal Mechanical Advantage = Output Distance/Input Distance, D. Ideal Mechanical Advantage = Output Force/Input Force
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select the statement(s) that accurately describe the energy transformat…
electrical energy to thermal energy, electrical energy to light energy
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of the following substances or substance groups, which is the only one …
A. Inhalants
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the equation for calculating actual mechanical advantage is a actual me…
d. Actual Mechanical Advantage = Output Force/Input Force.
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which one of the following is the correct option for fill in the blank:…
input
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temperature and thermal energy instruction active comparing potential e…
solids
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how much a machine changes the input force is its ______. enter the ans…
mechanical advantage
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drag and drop the words or phrases that accurately complete the paragra…
gravitational potential, elastic potential, rubber band
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ways that machines may make work easier include changing the a directio…
d. any of the above
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a hammer has an input distance of 3 cm and an output distance of 9 cm. …
C. \(1/3\)
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reasoning each month, a shopkeeper spends 5x + 17 dollars on rent and e…
The shopkeeper spends \((2x + 21)\) dollars on electricity. The values of \(x\) for which he spends less than \(\$100\) on electricity are \(x<39.5\) (since \(x\) represents an am…
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if the body temperature of a person is recorded as 37°c, what is the pe…
310
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reasoning each month, a shopkeeper spends 6x + 17 dollars on rent and e…
He spends \(3x + 21\) dollars on electricity. The amount he spends on electricity is less than \(100\) when \(x<\frac{79}{3}\approx26.33\). We found the electricity cost by subtra…
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the output work is always less than the input work because some of the …
input
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which is correct? a work = force x distance b work = force/distance c d…
A. Work = Force x Distance
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the output work of a machine is always ______ than the input work. grea…
less
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is defined as the use of force to move an object over a distance.
Work
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the closer to 100 percent a machines efficiency is, the better it is at…
thermal energy loss
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converting temperature readings if the body temperature of a person is …
37
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is the percent of work put into a machine by the user (input work) that…
Efficiency
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the of a machine is the percent of input work that becomes output work.
Efficiency
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if a machine requires an input of 5,000 joules of work to put out 4,000…
C. 80%
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select the temperature scale that matches each boiling point for water.…
Water boils at 373: Kelvin ($K$). Water boils at 100: Celsius ($^{\circ}C$). Water boils at 212: Fahrenheit ($^{\circ}F$).
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explaining how thermometers work complete the passage to explain how th…
When the temperature rises, the liquid in the thermometer *expands*. When the temperature drops, the liquid in the thermometer *contracts*.
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which of these would have the highest temperature? ice water water vapor
water vapor
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which of these would have particles with the highest kinetic energy? ic…
water vapor
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complete the passage to identify potential and kinetic energy. a rock r…
A rock resting on the top of a hill has potential energy, while a rock rolling down a hill has kinetic energy.
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multiple choice: turn left with turtle 1 moveforward(); 2 turnleft(); 3…
A. Option Text
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multiple choice: turn left with turtle moveforward (); turnleft (); tur…
C. Option Text (assuming option C is the one with the turtle pointing down based on the general turtle - graphics direction - change logic)
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how does work affect energy between objects so it can cause a change in…
Work transfers energy.
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the image shows a dam. which descriptions best fit the labels? x: kinet…
X: potential energy; Y: kinetic energy (the second option)
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type the correct answer in the box. which guideline for writing a busin…
tone
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question 25 1 pts eric is under a great deal of stress from his job. hi…
C. socializing
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an object has a velocity of 8 m/s and a kinetic energy of 480 j. what i…
15 kg
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question 14 2 points those symptoms that involve noticeable decreases a…
D. negative
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during a heat wave, there is an increased demand for electricity to ope…
raise the control rods so that fewer neutrons are absorbed and more can split uranium atoms
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nuclear energy is currently used in which three kinds of vehicles? cars…
submarines, ships, spacecraft
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question 21 increasing hypertension and ldl (harmful) serum cholesterol…
A. False
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which is the best location for storing radioactive wastes? in the sand …
in chambers carved into the rock of a mountain
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the table shows information about four students who are running around …
Mohammed has less kinetic energy than Autumn.