Physics
Kinematics, force analysis, electricity, and equation-driven reasoning.
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the band gap can vary depending on temperature. select one: true false
True
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one end of an ideal spring is attached to a wall and the other end to a…
C. \(12\ J\)
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the average value of a full - wave rectified voltage with a peak value …
143.31
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a pn junction is formed in a semiconductor whenever p-doped material an…
True
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in the practical diode model, select one: o a. the barrier potential is…
A. the barrier potential is taken into account
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piv stands for positive inverse voltage. select one: true false
False
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the process of adding an impurity to an intrinsic semiconductor is call…
d. doping
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line and load regulation are the same. select one: true false
False
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although current is blocked in reverse bias, select one: o a. there is …
A. there is a very small current due to minority carriers
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a diode limiter is also known as a clipper. select one: true false
True
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for a silicon diode, the value of the forward - bias voltage typically …
D. must be greater than 0.7 V
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silicon diodes have more leakage current than germanium diodes. select …
False
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the band gap in a pn junction is measured in ohms. select one: true fal…
False
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the purpose of a clamper is to remove a dc level from a waveform. selec…
B. False
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the term bias means select one: o a. the ability of a diode to block vo…
C. a dc voltage that is applied to control the operation of a device
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an object of mass 2 kg moves along the x - axis while a net non - linea…
C. \(2\sqrt{3}m/s\)
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when a diode is forward - biased and the bias voltage is increased, the…
stay the same
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one end of a spring of length l and spring constant k = 100 n/m² is att…
B. \(0.2m\)
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note: figure not drawn to scale. an object in space is placed between t…
A. The object will move toward Planet A and the gravitational potential energy of the system will decrease.
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question 25 what percent of your body mass is made of water? ○ a. 20%-4…
C. 60%-80%
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question 24 all of the following are examples of whole foods except: ○ …
B. Ice cream
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question 22 recognizing your own emotions and those of others to help y…
True
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question 20 self - awareness, self - regulation, motivation, empathy, a…
C. Emotional Intelligence
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question 33 an unrealistic reliance on cramming and a ________ are just…
C. Lack of sleep
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question if the velocity is changing over time but in a constant and pr…
changes in the money supply will continue to have a predictable effect on nominal GDP
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question if the velocity of money is 2.5 and the money supply increases…
250 billion
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7. what is the impact of stereotypes in healthcare? a they can lead to …
A. They can lead to misdiagnosis and unequal treatment
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choosing the right word select the boldface word that better completes …
1. fodder 2. erratic 3. jeers 4. fortify 5. mediocre 6. tantalized 7. comely 8. alien 9. tersely 10. subjugate 11. alien 12. jeering
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sadlierconnect.com: iwords audio program 9. tantalize (v.) to tease, to…
2. The weather at this time of year can be erratic—pleasant and mild one day, cold and stormy the next. 3. From her terse response to my message, I knew she had only a brief momen…
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unit: the roaring 20s & great depression name lesson: economic boom of …
1. d 2. f 3. b 4. e 5. g 6. h 7. a 8. i 9. c For the "DATES & EVENTS": 10. False. Most Americans used credit to buy goods as installment plans were popular. 11. False. Government …
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in 1978, sally ride was completing her ph.d. in physics at stanford uni…
- Cause: Ride was always interested in exploring space. Effect: Ride answered a NASA advertisement. - Cause: Ride wanted to support girls in the sciences. Effect: Ride founded Sal…
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around the world, farmers have found clever ways to meet the worlds gro…
- Farms may be a long distance from markets: An English company grows food underneath London. - An earthquake and tsunami harmed crops and livestock: A Japanese company grows food…
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read the text. el niño is a climate cycle that occurs in the pacific oc…
Cause: Winds push warm water westward → Effect: Cooler water rises. Cause: Winds blow warm water eastward → Effect: Warm water accumulates along South America. Cause: Clouds form …
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in 1882, prussian doctor robert koch discovered the bacterium that caus…
- Cause: Koch isolated the tuberculosis bacterium. Effect: Tuberculosis was determined to be contagious. - Cause: Doctors wanted to prevent the spread of tuberculosis. Effect: Pub…
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use the text to compare and contrast fm and am. am and fm are methods o…
- Was developed in the 1870s: AM - Amplitude is varied: AM - Can be transmitted over long distances: AM - Requires complex equipment: FM - Is preferred by music stations: FM
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use the text to compare and contrast comets and asteroids. asteroids an…
| | Comets | Asteroids | | --- | --- | --- | | Orbit the sun | Yes | Yes | | Were left over from the formation of the solar system | Yes | Yes | | Are composed mostly of ice | Yes…
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though its impossible to accurately predict most natural disasters, sci…
- Landslides are difficult to predict. → Researchers use optical fiber sensors to monitor them. - Volcanoes are difficult to predict. → Researchers use satellite cameras to monito…
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read the text. once ships sink to the ocean floor, theyre extremely dif…
- The wreck of Victory couldn't be found. - Zeus found it. - The wreck of Titanic couldn't be found. - Argo found it. - The wreck of Bluefields couldn't be found. - Remote - sensi…
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read the text. among american robins, the female does most of the nest …
sequential
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read the text. in october 2012, hurricane sandy swept onto the east coa…
cause - effect
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read the text. congress passed the clean water act of 1972 to address t…
problem - solution
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read the text. poetry is a special form of communication that uses lang…
compare - contrast
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read the text. during the 2014 west african ebola outbreak, liberia was…
Some people had Ebola - The hospital isolated patients. Some people had high - risk contact with Ebola patients - The hospital offered patients a voluntary quarantine. Some people…
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sometimes babies are born a little early. when this happens, skin senso…
- Small movements cause false alarms: The new system uses skin color to monitor pulse. - Skin sensors can be a source of discomfort: The new system is contactless. - Newborns must…
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university of utah engineers have developed \smart glasses\ designed to…
- Problem: People have to focus at multiple distances. Solution: The lenses can flex and bend. - Problem: People move their eyes continually. Solution: The glasses can focus in fo…
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read the text, to the naked eye, mars seems as distant as the stars. bu…
1. NASA may equip ships with special habitats. 2. Spacecraft may draw energy from the sun. 3. Spacecraft can use supersonic retropropulsion.
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how did the avocado, one of americas favorite foods, come to be? wild a…
1. Wild avocados had a large pit and less flesh - Humans cultivated avocados. 2. Fresh avocados weren't available year - round - Restrictions were lifted. 3. Avocados generally di…
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glaciers are masses of ice that hold important information about earths…
- The samples were huge - The samples were brought to the surface in sections. - The samples had to be preserved - The samples were taken to Antarctica. - Glaciers started to melt…
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read the text. before british scientist alexander fleming discovered an…
Infections killed people - Antibiotics were invented. Superbugs emerged - Scientists mixed maple syrup with medication.
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read the text. in lower-income countries, the high cost of medical equi…
Microscopes are expensive. - Prakash invented a version made mostly of paper. Centrifuges are expensive and need electricity. - Prakash invented a version made of paper and string.
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read the text. like many other countries, germany produces a huge amoun…
- Usable products are burned - Innatura gives them to charities. - Edible foods are thrown away - Berlin residents share them.
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a black hole is an area in space that is so compact and stuffed with ma…
- Cause: Black holes are compactly stuffed with matter. Effect: Black holes have very strong gravity. - Cause: Black holes reflect no light. Effect: Black holes are invisible. - C…
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read the text. when you put a tasty morsel in your mouth, saliva coats …
- Saliva breaks down food → Food becomes easier to swallow. - The epiglottis closes the windpipe → Food enters the esophagus. - The small intestine breaks down food → The body can…
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use the text to compare and contrast nebulae and galaxies. nebulae and …
- Are celestial objects: Nebulae (✓), Galaxies (✓) - Are collections of stars: Nebulae (✗), Galaxies (✓) - Collapse to form stars: Nebulae (✓), Galaxies (✗) - Have been found in c…
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use the text to compare and contrast cajun cuisine and creole cuisine. …
| | Cajun cuisine | Creole cuisine | |--|--|--| | Is found in Louisiana | $\square$ (checked) | $\square$ (checked) | | Reflects a wide mix of cultures | | $\square$ (checked) | |…
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read the passage below and answer the question that follows. the need f…
C. Reduction
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the need for mineral extraction and production is an essential activity…
B. regrettably, nevertheless
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a student is comparing the speeds of trains on high - speed rail lines …
A. 350 km/h
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9 fig. 1.1 shows a plastic water barrel. the barrel is full of water. (…
\(50\) # (b) Answer - Explanation Format
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thats called a... elevator winglet strut rudder
winglet
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warts can be caused by touching certain animals, especially toads. true…
FALSE
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estimating the age of a rock layer use what you know about relative dat…
Due to the **principle of superposition**, he can estimate that layer A is **more than 3.5 million** years old.
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9. patricia has been asked to collect soil evidence from a crime scene.…
Soil should be collected from both shallow and deep places.
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8. two samples of soil have been collected from different areas of the …
The darker sample is wetter than the lighter sample.
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7. what physical property can help characterize fragments of glass at a…
density
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6. detective sanders asked his colleague to take a look at the ridge ch…
fingerprints
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4. what is the first step forensic scientists must do to analyze eviden…
Take measurements to identify the characteristics of the evidence.
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fill in the blank question at the base of the pulmonary trunk lies the …
pulmonary
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multiple cholce question the small clumps of muscle to which the chorda…
papillary
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multiple choice question the right atrium receives ______ blood from th…
oxygen - poor
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fill in the blank question the specific valve name that is located betw…
tricuspid
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multiple cholce question the wall of the left ventricle is thicker than…
the left ventricle has to pump blood to all other parts of the body
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multiple select question select all that apply the right atrium receive…
Superior Vena Cava, Inferior Vena Cava, Coronary sinus
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fill in the blank question the layer of the heart that consists mostly …
myocardium
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multiple choice question the functions of the atria require them to hav…
thinner
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multiple choice question the ventricles are _. o the thicker lower cham…
the thicker lower chambers of the heart
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multiple choice question the space between the epicardium (visceral per…
pericardial cavity
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the graphs below describe two waves. the waves are traveling at the sam…
The first graph (the top - one) has a greater amplitude.
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the graphs below describe two waves. the waves are travelling at the sa…
The first graph (the one with more 'loops' and larger vertical spread in displacement) has the greater amplitude.
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the graphs below describe two waves. the waves are traveling at the sam…
The upper graph has a greater frequency.
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the graphs below describe two waves. the waves are traveling at the sam…
The lower graph has the wave with the greater frequency.
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the graphs below describe two waves. the waves are traveling at the sam…
The top - graph (the first graph) has a greater frequency.
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the graphs below describe two waves. the waves are traveling at the sam…
The second graph (the lower - one in the given problem) has the greater frequency.
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people often use factual evidence to support their personal opinions. t…
"Dwight Eisenhower should be remembered for his ability to plan long - term. His Interstate Highway System was a great investment. Without these highways, the U.S. would have stru…
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select the correct unit. the distance traveled by a falling object is m…
meters per second squared
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mathematically, why can you not use the specific heat equation during a…
Because during a change in physical state the change in temperature is zero so any answer would be zero.
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question #1 a popular carnival ride is the gravitron, which is basicall…
centripetal
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hot metal pellets at 150.0 °c are added to water. that is at 25.1 °c. t…
-82.7 °C
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hot metal pellets at 150.0°c are added to water. that is at 25.1°c. the…
\(67.3^{\circ}C\)
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voyager 2 was able to capture proof of the intensity of storms that occ…
nine
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what planet has an axis tilt similar to that of mars? earth venus satur…
Earth
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to the naked eye, planets look like bright stars when they are viewed f…
True
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at which layer of the atmosphere would a rainstorm occur? the thermosph…
the troposphere
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why does mercury have a very thin and temporary atmosphere? the heat of…
The mass of the planet is too small for an atmosphere to continuously stay around the planet.
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which of the following best describes venus orbit around the sun? as a …
as a constantly changing path
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collectively, the planets, moons, asteroids, and other objects that are…
planetary system.
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what test is used to identify lactase deficiency and blind loop syndrom…
Hydrogen breath test.
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non-tropical sprue is caused by an immune reaction to what protein?
Gluten
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are \gaps\ in the rock record. they may have occurred from erosion of e…
Unconformities
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what is acute pancreatitis commonly associated with?
Gallstones and excessive alcohol consumption.