Physique
Cinématique, forces, électricité et raisonnement par équations.
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two people are paddling a row boat. together they exert a horizontal fo…
2.01 m/s², forward
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the free-body diagrams below show four ways that two different forces c…
Diagram 3
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a basketball has a mass of 1 kg and is traveling 12 m/s. what would hap…
It would be cut in half.
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a baseball is traveling (+20 m/s) and is hit by a bat. it leaves the ba…
-50 m/s (the option with -50 m/s)
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1.33 m³ of fluid flows out of a pipe in 24.5 s. the fluid leaves the pi…
\( 0.0153\) (or more precisely, after calculating \(\frac{1.33}{24.5\times3.55}=\frac{1.33}{86.975}\approx0.0153\))
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a bowling ball has a mass of 5 kg. what happens to its momentum when it…
The initial momentum is \( 5\space kg\cdot m/s \), and the final momentum is \( 10\space kg\cdot m/s \) (the first option).
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the free body diagrams below show four ways that two different forces c…
Diagram 3
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when a bat hits a ball, what is the impulse? the change in velocity mul…
the force multiplied by the time the objects are in contact
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amy has a mass of 30 kg, and she is riding a skateboard traveling 5 met…
150 kg·m/s (corresponding to the option "150 kg·m/s")
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a box weighing 29 n is pulled horizontally until it slides uniformly ov…
0.23
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a horizontal force of 80 n is required to slide a 17 kg box across a ti…
0.48
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a pipe of radius 0.0100 m carries water at 2.33 m/s. how much time does…
$\approx1366$
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suppose pure water flows through a tube of diameter 0.00300 m, at a spe…
\( 5.65 \times 10^{-6} \) (or more precisely \( 5.6549\times10^{-6} \))
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a ball is thrown into the air with an upward velocity of 80 feet per se…
after 5 seconds
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a garden hose has a radius of 0.0120 m, and water comes out at a speed …
\(1758\space s\) (rounded to a reasonable number of significant figures)
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8/20 a protector, symbolizes balance and emotion/physical well - being …
D. Mother
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which statements describe ways to reduce air, land, or water pollution?…
A. Carpool to work, B. Landscape with native plants, D. Reduce waste in landfills by recycling, E. Turn off lights when they are not in use, F. Have cars routinely maintained
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a plastic ball with a density of 500 kg/m³ is partially submerged in a …
2450
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a student is attempting to draw a free body diagram for a ball being pu…
The applied force should be the same size as the friction force (the third option, assuming the options are labeled as: (Option 3) The applied force should be the same size as the…
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a person is floating on a raft, their total volume is 1.5 m³. the perso…
\( \approx 149.33 \, \text{kg/m}^3 \) (or more precisely, \( \frac{224}{1.5} = \frac{2240}{15} = \frac{448}{3} \approx 149.33 \))
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which statement best describes the deepwater horizon spill? it was the …
A. It was the largest accidental marine oil spill in history, heavily damaging wildlife in the Gulf of Mexico.
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25. what is the value of the boolean variable can_vote at the end of th…
False
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a person, having a density of 993 kg/m³, is floating in water. what per…
99.3
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compare the student text with the source. source: misty copeland, life …
Yes, because it fails to use quotation marks.
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2. describe how the behavior of waves impacts the pitch of the sound th…
When an object emitting sound moves, the Doppler Effect changes the pitch (perceived frequency) of the sound. Frequency ($f$) and wavelength ($\lambda$) are related by $v = f\lamb…
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an object experiences a buoyant force of 15.9 n when immersed in a flui…
\( \approx 0.00177 \)
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a velocity-time graph is shown, displaying the behavior of a race cart …
B. 10 - 15 min
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an aluminum sphere with a density of 2700kg/m³ is fully submerged in a …
\( 220.5 \)
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using the doppler effect scenario investigate analyze conclude imagine …
The Doppler Effect is the change in the frequency (and corresponding wavelength) of a wave (such as sound or electromagnetic waves) as perceived by an observer when the source of …
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10. what is printed by the following program if the user enters 1? num_…
Odd
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a feather and a brick are dropped from the same height in a vacuum cham…
C. both will hit the bottom at same time (assuming the options are labeled as A. feather, B. brick, C. both will hit the bottom at same time, D. not enough information)
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how can inertia be described? * objects dont start moving without an un…
D. All of the above ### Second Question (The free - body diagram question, but the diagram is partially visible. Assuming a typical free - body diagram with forces, say, if there …
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question 7 7 / 8 where does a scientist test ideas? a. in latin b. in h…
C. In the lab
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question 6 what did scientists think was like nature? a. labs b. measur…
C. Machines
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based on the velocity vs. time graph below, how can the acceleration be…
B. (10 - 0) meters per second / (5 - 0) seconds (assuming the second option is labeled as such; if options are A, B, C, D, then the correct option is the one with (10 - 0) m/s / (…
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question 6 what did scientists think was like nature? a. labs b. measur…
(Note: Ambiguous without context; if forced to select based on common analogies, C. Machines) C. Machines
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doing science: measure and know ews: science scene until about three hu…
B. Measuring tools
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the free-body diagram below represents the forces acting on an object. …
A. combine the horizontal forces only (assuming the first option is A, but in the given options, the first option is "combine the horizontal forces only")
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which of the following is true about static equilibrium? * 1 point chec…
- Forces are balanced - Object is at rest ### Second Question (Position vs. Time Graph 6–12 seconds):
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which is acceleration? * a change in position a change in time a change…
C. a change in velocity ### Second Question:
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the acceleration due to gravity on earth is _____. -9.81 m -9.81 m/s -9…
\(-9.81\ \text{m/s}^2\) (the option with \(-9.81\ \text{m/s}^2\)) ### Second Question (Velocity vs Time Graph)
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which of the following is true about dynamic equilibrium? * check all t…
- Forces are balanced - Object is moving with constant velocity ### Second Question (Squirrel's Velocity)
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an object moving in a positive direction with positive acceleration wil…
D. speed up ### Second Question (Accuracy and Precision)
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a force is a ______. options: push, pull, push or pull, none of the abo…
C. push or pull ### Second Question (Motion: Distance and Displacement)
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the free - body diagram below represents the forces acting on an object…
- The applied force is 150 N - The object will move to the right - Force are unbalanced
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the slope (rise over run) of a velocity vs. time graph is the ______. g…
A. acceleration
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based on the velocity vs. time graph below, when is the object in dynam…
0 to 10 seconds, 20 to 30 seconds ### Second Question (Velocity of - 3.0 m/s)
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a baseball is thrown into the air with an initial velocity of 11.0 m/s.…
- The velocity at location B is 0 m/s - The object speeds up when moving from position B to C
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newton’s second law of motion can be modeled as: f = (m)(a) if mass is …
B. increase ### Second Sub - Question
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what does the simile \as calm as rain\ suggest about mr. phillips demea…
A. He remains composed and unemotional despite his harsh actions.
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question 10 of 30 there are several theories of emotion. which one says…
C. James-Lange
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what about the versailles conference was inherently biased and unfair? …
The Versailles Conference (Treaty of Versailles) was biased/unfair as Germany was excluded from key decision - making (dominated by “Big Four”), forced to accept sole war guilt (A…
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which of the following is the most important reason to maintain a high …
C. A higher level of fitness allows you to live a longer, healthier life.
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inner workings of an electric motor coils of wire n s permanent magnet …
A. Increase the number of coils of wire within the two sections of the motor.
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an exercise program that lacks specific goals is failing what fitness p…
A. specificity
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specificity means an exercise program should have end goals that target…
T
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which of the following is the best example of increasing the intensity …
B. running one mile faster than normal
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whats the first step one should take when determining the amount of ove…
C. assessing your current level of fitness
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question 8 of 10 which of the following people appears to have dissocia…
D. Aaron, who has different personalities
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doing science: measure and know news: science scene until about three h…
D. What happened to natural philosophers
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doing science: measure and know news: science scene until about three h…
B. What types of questions scientists ask
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doing science: measure and know news: science scene until about three h…
A. There were no instruments.
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question 3 what did the first natural philosophers do? a. they tested t…
C. They thought about ideas.
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question 2 2 / 8 which shows the right order of the scientific method? …
A. Hypothesize, observe, analyze, conclude
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inge lehmann noticed that seismic waves bounced back to the surface hel…
D. solid.
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what is caused by earthquakes that scientists use to study the interior…
Seismic Waves
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multiple-choice question what is the 2nd way discussed for learning abo…
A. Study Rocks, Volcanoes, and Plate Tectonics
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multiple-choice question where are diamonds formed? deep in the mantle …
A. Deep in the mantle
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2. if 10 hot wings have 700 calories and ben ate 25 hot wings at dinner…
1,750 calories (the option with "1,750 calories")
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kidney transplants have a high (90-97%) 1-year survival rate. a true b …
A. True
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continuous ambulatory peritoneal dialysis (capd) utilizes the skin as a…
B. False
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most renal calculi (kidney stones) are formed from calcium salts. a tru…
A. True
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the accumulation of nitrogenous wastes in the blood is called uremia. a…
A. True
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continuous ambulatory peritoneal dialysis (capd) utilizes the peritoneu…
A. True
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kidney transplants have a low 1-year survival rate of success, even wit…
B. False
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involuntary loss of urine is called incontinence. a true b false
A. True
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other than urination, which are ways that water leaves the body? select…
A. Feces, B. Exhalation, C. Sweat
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analyzing the properties of rocks in earths layers layer | density (g/c…
The rocks in the lower mantle are the most dense. (Corresponding option: The rocks in the lower mantle are the most dense.)
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if excess hydrogen ions are added to the blood, the body will respond b…
A. increased respiration and reabsorption of bicarbonate ions
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analyzing the effect of temperature and density on earth earth’s lithos…
They are moving away from each other.
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what accounts for 95% of the volume of urine? a water b nitrogenous was…
A. Water
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analyzing the asthenosphere why are the properties of the asthenosphere…
B. Earth’s plates float on the denser asthenosphere, D. The asthenosphere allows Earth’s crust to move
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what stimulus causes the release of renin? a high blood pressure b low …
C. Low blood pressure
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which of the following is an effect of aging on the urinary system? a i…
E. All apply.
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diuretics ________ . a decrease water reabsorption b raise blood volume…
D. both decrease water reabsorption and increase urine flow
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which of the following substances is normally not found in urine? a ure…
C. Glucose
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what plays a major role in the loss of kidney function with age? a kidn…
B. Fewer functioning nephrons
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comparing earth’s layers use the drop-down menus to select the part of …
For each drop - down: - "May help create Earth’s magnetic field": Outer Core (assuming the layer corresponding to outer core in the drop - down options) - "Can be thick or thin, d…
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comparing the mantle and core which phrases are true of only the mantle…
- has a tarry layer - made of two layers - has a solid outer layer
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choose the answer. herbie has been to six doctors and six doctors have …
hypochondrias
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understanding earths crust a scientist uses a special instrument to mea…
below a mountain range
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analyzing earths interior which event would most likely occur if earth …
The asthenosphere and outer core would solidify
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what stimulus causes the release of atrial natriuretic hormone from the…
B. Increased blood volume stretching the atria
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explaining how earthquakes reveal earth’s interior how do earthquakes h…
solid
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one of the beliefs that kept the mentally ill out of society and the re…
The belief that the mentally ill were possessed. mental illness
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the best indicator of the bloods osmolality is the concentration of ___…
C. sodium ion ($\text{Na}^+$)
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explaining how earthquakes reveal earth’s interior how do earthquakes h…
seismograph
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identifying sources used to study earth’s interior which sources do sci…
B. core samples, D. earthquakes, E. S waves, F. rock composition
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what is the reason for more kidney stones with age? a kidney infections…
D. All apply.
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diabetes mellitus involves _______ glucose in the blood and _______ glu…
C. increased; increased