Physik
Kinematik, Kraftanalyse, Elektrizität und Gleichungslogik.
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the half life of a certain substance is about 4 hours. the graph shows …
$y = 50(0.85)^t$ (corresponding to the fourth option)
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what quantities are related by ohms law? check all that apply. voltage …
voltage current resistance
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7. find the efficiency of a machine that has an input work of 1200 j an…
C. $6.67\%$
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question: an element with mass 140 grams decays by 21.6% per minute. ho…
$0.3$ grams
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pick a planet. any planet... unless you want to be correct! your choice…
15. Jupiter 16. Mars 17. Saturn 18. Venus 19. Uranus 20. Neptune 21. Mercury 22. Jupiter or Saturn 23. Uranus
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planets quiz 2 name:______ date:______ period:______ directions: write …
1. True 2. False 3. True 4. False 5. False 6. False 7. True 8. False 9. True 10. True 11. True 12. True 13. True 14. False
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6. the potential energy of a 10 kg car when it is at the top of a 45 m …
A. 4,410 J
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use the drop - down menus to complete the statements. an increase in vo…
1. An increase in voltage results in an increase in current. 2. An increase in resistance results in a decrease in current.
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which situation would be best represented by a linear function? the tem…
The outside temperature decreases at a constant rate per hour between sunset and sunrise.
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3. briefly describe the “size/pitch ratio” as exhibited by musical inst…
In musical instruments, there is an inverse relationship between size and pitch where larger size typically corresponds to lower pitch due to slower - vibrating elements in larger…
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a helicopter can fly at 250 km/h relative to the air, but the wind is b…
(a)(i) $\vec{v}_{h,a}$, sketch: vector of length proportional to 250 km/h pointing west. (a)(ii) $\vec{v}_{a,g}$, sketch: vector of length proportional to 85 km/h pointing east. (…
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5. a 2 kg object has a kinetic energy of 2j when its speed is (a) 0.457…
C. 1.414 m/s
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a helicopter can fly at 250 km/h relative to the air, but the wind is b…
(a)(i) $\vec{v}_{ha}=-250\hat{i}\ km/h$ (a)(ii) $\vec{v}_{ag}=85\hat{i}\ km/h$ (b) $165\ km/h$ west (c) $t\approx6.06\ h$
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physical weathering occurs when non - living processes break down rock …
B. Water
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which of the following statements about exercise barriers is true? mult…
C. On average, U.S. adults have five hours of free time a day, often used for passive activities like television watching rather than physical activity.
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what type of rotary bits can cause a grinder to catch on rough material…
C. burr
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what are two of the most important pieces of ppe when using a grinder? …
ear protection, safety glasses
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which is a compact tool that operates by moving attachments back and fo…
C. oscillating multi - tool
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what is an angle grinder used to grind? soft, porous materials imperfec…
D. hard, heavy materials
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which grinder accessory can be used to provide a stable surface for fle…
B. backing pad
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4. a 40 kg boy runs up a flight of stairs 4 m high in 4 s. his power ou…
(b) 392 W
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what is important to do when using a grinder on a platform? use a flame…
use a flame retardant blanket to catch falling sparks
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which fastening system is used to drive steel pins or threaded studs in…
powder - actuated tool
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what range of pressure should pneumatic nailers be operated? 30 to 80 p…
C. 70 to 120 psi
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why might powder - actuated tools be prohibited on a jobsite? a fire ma…
C. Due to ATF regulations regarding gun powder
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why might powder - actuated tools be prohibited on a jobsite? a fire ma…
C. Due to ATF regulations regarding gun powder.
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what type of tool is a porta - power®? battery - powered pneumatic hydr…
C. hydraulic
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how do electric and pneumatic nailers differ from powder - actuated nai…
B. do not require certification
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sports drinks are usually not recommended unless a person exercises mor…
True
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when is a pneumatic drill commonly used? to perform precision work to d…
when electricity is unavailable
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question #2 predict how the strength of the force between the cars chan…
The strength of the force between the cars increases. This is because according to Coulomb's law ($F = k\frac{q_1q_2}{r^2}$), when the wedges are removed and the cars move closer …
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what material is drilled with a hammer drill? stainless steel hardwood …
C. concrete
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what is never to be engaged when using power tools? trigger lock bit sh…
C. booster
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people who exercise in the winter need to be vigilant about consuming e…
True
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which power tool works well for driving (or loosening) a large number o…
A. Impact driver
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review what you learned after reading pages 361 - 369 of your textbook,…
1. Ocean waves are surface - gravity waves. The circular motion of water particles in these waves causes objects on the water surface to bob up and down. 2. Generally no, as wave …
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3. the work done in lifting 25 kg of bricks to a height of 20 m is (ass…
(e) none of the above
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which part of a drill holds the drill bit in place? o auger o ram o chu…
C. chuck
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what do pneumatic tools run on? fluid pressure compressed air manual pu…
B. compressed air
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fainting or coronary abnormalities may occur following exercise as bloo…
True
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what does a heavy - duty cordless drill have that is different from a t…
B. voltage rating
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how is wood cut when ripping with a table saw? against the grain at an …
C. to a specific width
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heat ____ is a condition caused by excessive loss of electrolytes in sw…
D. cramps
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two motorcycles are heading north. one motorcycle is 0.25 km ahead of t…
50 s
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10. the temperature in the city was -5°c in the morning. by evening, th…
C. 3 degrees Celsius
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a power miter saw combines a miter box with what type of saw? o jigsaw …
circular saw
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why should a circular saw that does not have an upper blade guard never…
The exposed blade poses a danger.
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based on the map above, where would a large city be most likely to deve…
Where the river meets the ocean
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which of the following is not a key strategy for preventing excessive i…
A. hypothermia
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what is the most important maintenance on a circular saw? o battery cha…
blade's sharpness
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when using a portable band saw, what should the stop be placed firmly a…
D. object being cut
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if you experience a soft tissue injury, one of the first steps you shou…
C. elevate the area of the injury
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multiple choice 2 points. which factor caused pangaeas interior regions…
Lack of ocean moisture reaching the continental interior
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which of the following statements regarding warm - ups and cool - downs…
B. Taking a hot shower immediately after vigorous exercise effectively aids in cool - down and blood - flow return to the heart.
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multiple choice 2 points which sphere interaction is demonstrated when …
Geosphere - atmosphere
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2. when the speed of an object is doubled (a) its kinetic energy is dou…
d. its momentum is doubled
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fill in the blank 2 points the cycle has no major atmospheric component…
phosphorus
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primarily due to downhill running, trail running places more demand on …
True
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walking 10,000 steps is equivalent to energy expenditures between 300 t…
True
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fill in the blank 2 points. the supercontinent that existed during the …
Pangaea
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people with joint issues or who want to lose weight more quickly are ad…
True
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required information reading quiz: improving your health through modera…
False
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what type of plate boundary is formed when two slide past each other? c…
Transform
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unstructured physical activities, such as taking the stairs instead of …
True
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how geography affected early human communities. use the table below to …
For Rivers: - Where People Lived: Near riverbanks. - How it Affected: Enabled trade, agriculture. - Why it Was Important: Water supply, food source. Symbol: Wavy line. For Mountai…
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which of the following shows the earths layers listed in order from coo…
Crust → Mantle → Outer core → Inner core
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which of the following statements about daily physical activity is true…
Walking about 10,000 steps a day, five days per week, expends the amount of energy in activity that is recommended for preventing premature death.
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multiple choice 2 points which of earths spheres includes rocks, mounta…
Geosphere
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which of the following is recommended to reduce the risk of pelvic floo…
frequently stand up on the pedals to break up long periods of sitting and leaning forward
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according to michael meisters introduction to the inferno, why does dan…
C. Because many people still struggle with the age - old question of what it means to be a good person
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32 multiple choice 2 points which of the following is a renewable natur…
B. Sunlight
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which of the following statements about muscle fitness development is t…
A. Both men and women increase muscle mass through training but the increase in muscle mass among men is typically greater than among women
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which step shows nitrogen fixation? conversion of atmospheric n₂ into a…
Conversion of atmospheric $N_2$ into ammonium
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section a 1. a 3.0 kg ball is struck with a bat with a force of 160 n. …
(e) none of the above
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core - strength training methods include all of the following except mu…
A. walking
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directions: select each correct answer. more than one answer may be cor…
C. The species that receive the largest benefit are not necessarily the most endangered D. Populations of non - game species can decline as they are displaced by game species
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math mini - lesson pages 368 - 369 of your textbook show you how to cal…
wavelength = 40 meters period = 4 seconds speed = $\frac{40}{4}$ = 10 m/s Frequency = $\frac{10}{40}$ = 0.25 Hz
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average temperatures in rome one reason for the difference between thes…
the tilt of Earth on its axis
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the american college of sports medicine recommends that people exercise…
False
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earthquakes can cause damage far away from where they initially strike …
Seismic
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many volcanoes and earthquakes occur in this area known as --. ring of …
Ring of Fire
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drew is showing his friends a device that he claims is able to trap 90 …
A. allowing it to receive electricity from gasoline - powered engines
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which type of stretching involves a partner who applies pressure to you…
B. passive stretching
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which statements are true regarding the data represented by the scatter…
The data shows a quadratic relationship. The change in height compared to the change in time is not constant.
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which of the following statements about flexibility and flexibility tra…
Stretch before your other exercise in order to see greatest improvement in flexibility.
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which is the most effective piece of evidence to support the claim that…
Adolescents who exercise daily have stronger muscles, higher levels of respiratory fitness, and lower levels of body fat.
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multiple choice 2 points which spheres interact when a hurricane causes…
Atmosphere, Hydrosphere, and Biosphere
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what three factors help shield earth from the harmful effects of the su…
Ozone layer, magnetic field, and water cycle
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which assessment method can be used to determine target heart rate? mul…
D. heart rate reserve formula
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which of the following statements about the frequency of cardiorespirat…
C. In general, it is necessary to exercise at least five times a week to obtain adaptation changes in the cardiorespiratory system.
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what three factors help shield earth from the harmful effects of the su…
Ozone layer, magnetic field, and oceans
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what function does earths magnetic field serve in protecting life? (one…
Deflects harmful solar radiation
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annual climatography of a national capital: monthly temperature and pre…
This city is subject to seasonal loading.
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multiple choice 2 points after precipitation, some water seeps through …
A. Infiltration
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to improve cardiorespiratory function, the ideal exercise frequency is …
A. five times per week
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7) the man in this photograph has been working on his laptop for severa…
Measure the viewing angle of the man looking at the laptop screen. If the angle is not within 15 - 20 degrees, the way he's sitting and looking at the screen is likely the cause. …
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multiple choice 2 points after precipitation falls, water may collect i…
Collection and runoff
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the four dimensions of an exercise training program that affect overloa…
D. weight
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multiple choice 2 points. the burning of fossil fuels primarily increas…
B. Carbon dioxide
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which type of exercise is considered an example of conscious movement? …
A. t'ai chi