Answer:
Explanation:
i think its post conventional im not sure so u dont have to fallow this okie:)
What two horizontal forces are present as a car is pushed down the driveway?(1 point)
push, velocity
power, friction
power, weight
push, friction
The two horizontal forces that are present as a car is pushed down the driveway are push and friction.
A force refers to that which produces or opposes motion. When force(s) is/are acting on a body, they either cause motion to occur or prevent motion from occurring. An example of a force which opposes motion is friction.
For a car being pushed along a driveway, the two possible horizontal forces that act on it are push which moves it forward and friction which resists its motion.
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Answer:
Push and friction
Explanation:
As per Newton's third law
Every action has an equal and opposite reaction.Here the car is pushed so the force applied is pushing force
The opposition force is frictional force
Option D
What is 4.2 converted into grams
Explanation:
4.2 converted to grams equal 119.067997125
why is it more difficult to start moving a heavy carton from rest than it is to keep pushing it with constant velocity?
It is more difficult to start moving a heavy carton from rest than it is to keep pushing it with constant velocity because of static friction.
Static friction refers to the resistance encountered when attempting to initiate the movement of two objects that are in contact with each other but not currently in motion relative to each other. When an object is at rest, the force of static friction acts in the opposite direction to any force applied to it.
In this case, the force applied to the carton is the force needed to start moving it from rest. The force of static friction is greater than the force applied to the carton, making it difficult to start moving the carton from rest.
Once the carton is moving with constant velocity, the force of static friction is no longer acting on it. The only force acting on the carton is the force that is applied to keep it moving at a constant velocity. This force is equal to the force of kinetic friction which is less than the force of static friction.
To summarize, the initial effort required to overcome the static friction between a heavy carton and its resting position is greater compared to the continuous force needed to maintain its constant velocity. The force of static friction is greater than the force applied to the carton, making it difficult to start moving the carton from rest.
Once the carton is moving with constant velocity, the force of static friction is no longer acting on it, and the only force acting on the carton is the force that is applied to keep it moving at a constant velocity.
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Sharks feed on a wide variety of prey and have low mortality rates. It is important that an ecosystem containing sharks contain a high degree of biodiversity. If an ecosystem containing sharks does not contain a high degree of biodiversity, the sharks will consume
Answer:
A species to extinction.
Explanation:
Biodiversity is the coexistence of several types of organisms in a habitat. The higher the level of biodiversity, the more the population of various plants and animals exist and vice versa.
Sharks feeding on a variety of animals in its ecosystem prevents extinction as time needed for breeding would promote population increase.
Answer: B, many members of a key species, and the ecosystem will no longer be stable.
Explanation:
Suppose you calculated the speed of light in an unknown substance to be 4.00x10^8 m/s. How could you tell if you made an error in your calculations
Answer: You could tell if you made an error in your calculations by repeating the steps.
Speed of light is the fastest/maximum in vacuum which is equal to 3 × 10^8 m/s, therefore speed of light through any material equal to 4 × 10^8 m/s is physically and theoretically impossible and therefore incorrect.
Explanation:
what are the 3 function options in the what-if-anlysis dropdown:
The 3 function options in the what-if-anlysis dropdown are data table, scenario manager and goal seek.
The three function options in the ”What-If Analysis” dropdown menu typically found in spreadsheet software like Microsoft Excel are:
1. Data Table: This option allows you to create a table that shows the impact of changing one or two input variables on the results of a formula. It is useful for conducting sensitivity analysis and understanding how changes in input values affect the final outcome.
2. Scenario Manager: This option enables you to create and manage different scenarios by specifying different sets of input values. It allows you to compare and analyze the results of different scenarios without modifying the original data or formulas directly.
3. Goal Seek: This option helps you find the input value needed to achieve a specific goal or target result in a formula. It allows you to specify a desired outcome and Excel will determine the value of an input variable required to achieve that result.
These functions provide tools for performing various types of “what-if” analyses, allowing you to explore different scenarios, evaluate the impact of changes, and determine the necessary inputs to achieve desired outcomes within your spreadsheet models.
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Particle Physics: What type of particle detector uses supersaturated gas, that when a charged particle passes through, causes the gas to condense, leaving a track of the particle? This type of detector was famously used to first detect the positron and muon?
The cloud chamber was an important tool for early particle physics experiments, allowing physicists to observe and study the properties of subatomic particles.
The type of particle detector you are referring to is called a cloud chamber. Cloud chambers use supersaturated vapor to detect the presence of charged particles. When a charged particle passes through the vapor, it ionizes the atoms or molecules in the vapor along its path, creating a trail of charged particles. The ions act as nucleation sites for the supersaturated vapor to condense around, forming visible droplets that can be seen and photographed.
The cloud chamber was indeed famously used to first detect the positron, the antiparticle of the electron, in 1932 by Carl Anderson. It was also used to discover the muon, a heavy cousin of the electron, in 1936 by Carl D. Anderson and Seth Neddermeyer. The cloud chamber was an important tool for early particle physics experiments, allowing physicists to observe and study the properties of subatomic particles.
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A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle forward, the skier accelerates. A 82.1 kg water-skier has an intial speed of 5.8 m/s. Later, the speed increases to 11.8 m/s. Determine the work done by the net external force acting on the skier.
The amount of work done by the net external force on the water-skier is approximately 4,314.48 joules.
What is the work done by the net external force acting on the water-skier if their initial speed is 5.8 m/s and their final speed is 11.8 m/s, given that they have a mass of 82.1 kg?To determine the work done by the net external force acting on the skier, we can use the work-energy principle:
Net work done on the skier = change in kinetic energy of the skier
The change in kinetic energy is:
ΔK = 1/2 * m * (vf² - vi²)
where m is the mass of the skier, vi is the initial velocity, and vf is the final velocity.
Substituting the given values:
ΔK = 1/2 * 82.1 kg * (11.8 m/s)² - 1/2 * 82.1 kg * (5.8 m/s)²ΔK = 1/2 * 82.1 kg * (139.24 m²/s² - 33.64 m²/s²)ΔK = 1/2 * 82.1 kg * 105.6 m²/s²ΔK = 4,314.48 JTherefore, the net work done on the skier is 4,314.48 J.
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Why is the Ring of Fire a very geologically active part of the earth?
Question options:
The dense Pacific plate is being subducted from multiple directions.
The plates surrounding the Pacific are diverging and increasing the size of the Pacific plate.
The Pacific plate is surrounded by a hot spot.
What is the impulse experienced by a 24kg dog as he speeds up from 2m/s to 6m/s
Given
m = 24kg
vi = 2 m/s
vf = 6 m/s
Procedure
Impulse = Change in momentum
\(\begin{gathered} I=m\Delta v \\ I=m(v_f-v_i) \\ I=24\cdot(6-2) \\ I=96\operatorname{kg}m/s \end{gathered}\)The answer would be I = 96 kg*m/s
which electronic states are accessible from the a1 ground electronic state of this molecule by electric dipole transitions and what are the polarizations?
Without specific information about the molecule in question, it is not possible to determine the electronic states that are accessible from the a1 ground electronic state or the polarizations of the transitions.
The electronic states accessible by electric dipole transitions depend on the specific electronic structure of the molecule, which in turn determines the allowed electronic transitions.
Similarly, the polarization of the transitions will depend on the orientation and symmetry of the molecule and the direction of the electric field vector of the incident light.
Therefore, to determine the electronic states accessible by electric dipole transitions and their polarizations, it is necessary to have more information about the specific molecule and the experimental conditions.
This information can be obtained through various spectroscopic techniques such as UV-visible absorption, fluorescence, or Raman spectroscopy.
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58
74
3 points
A hummingbird beats its wings up and down with a frequency of 100 Hz. What is the period of the hummingbirds flaps? (D
YOUR ANSWER)
59
Answer:
T = 0.01 s
Explanation:
Given that,
The frequency of the beats of a hummingbird, f = 100 Hz
We need to find the period of the hummingbirds flaps. Let the time is t. We know that the relation between frequency and time period is given by :
T = 1/f
Put all the values,
T = 1/100 = 0.01 s
So, the time period of the humming bird is 0.01 s.
For a 7 stage MIPS execution pipeline, compute the theoretical maximum speed up. Explain what a pipeline hazard is?
The theoretical maximum speedup of a pipeline can be calculated using the formula:
Maximum Speedup = Number of Stages
In this case, the pipeline has 7 stages, so the theoretical maximum speedup would be 7.
A pipeline hazard refers to a situation in a pipeline where the normal flow of instructions is interrupted or delayed, leading to a decrease in performance or efficiency. Pipeline hazards can occur due to dependencies between instructions or conflicts in resource usage. There are three types of pipeline hazards:
Structural hazards: These occur when multiple instructions require the same hardware resource at the same time. For example, if two instructions need to access the same register or memory location simultaneously.
Data hazards: These occur when an instruction depends on the result of a previous instruction that has not yet completed. Data hazards can be further classified into three types: read-after-write (RAW), write-after-read (WAR), and write-after-write (WAW) hazards.
Control hazards: These occur due to changes in the program flow, such as branches or jumps. Control hazards can result in the pipeline incorrectly predicting the next instruction, leading to wasted cycles.
To mitigate pipeline hazards, techniques like forwarding, branch prediction, and instruction scheduling can be employed. These techniques aim to minimize stalls and ensure smooth execution of instructions in the pipeline, thereby improving overall performance.
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After traveling for 6.0 seconds, a runner reaches a speed of 12 m/s after starting
from rest. What is the runner's acceleration?
A. 2 m/s²
OB. 72 m/s²
C..5 m/s²
D. 6 m/s²
Answer:
A
Explanation:
accel = Δv / Δ t = 12/6 = 2 m/s^2
I need to find the total mechanical energy. I think the first one is correct but the second one is wrong
Answer:
di ko po alam ang sagot baka
po pang grade 9 po yan
Explanation:
sana po magets nyo po
A test car and its driver, with a combined mass of 600 kg, are moving along a straight,horizontal track when a malfunction causes the tires to stop rotating. The car skids to a halt with constant acceleration, leaving skid marks on the road during the whole time it skids. Which two of the following measurements, taken together, would allow engineers to find the total mechanical energy dissipated during the skid?
A. The length of the skid marks
B. The contact area of each tire with the track.
C. The coefficent of static frction between the tires and the track.
D. The coefficent of static frction between the tires and the track.
Answer:
The two of the following measurements, when taken together, would allow engineers to find the total mechanical energy dissipated during the skid
B. The contact area of each tire with the track.
C. The co-efficent of static friction between the tires and the track.
D. The co-efficent of static friction between the tires and the track.
Explanation:
Why does air move from solid land towards water during the night?
A-Solid ground cools faster at night while water remains heat longer, warming the air above the water.
B- The ground retains the heat from the sun longer than the water.
C- The dry air over the land is heavier than the air over the water the contains more water vapor
D- gravity moves the air towards the water because water is lower than the land
Answer:
A
Explanation:
This is to do with convection currents :)
Hope this helps!
The examination of radial and tangential fracture lines on glass that has been struck by two projectiles in sequence can provide the following information:
a. The refractive index of the glass
b. The sequence by which the projectiles struck the glass
c. Both a and c
The examination of radial and tangential fracture lines on glass struck by two projectiles in sequence can provide both the refractive index of the glass and the sequence of impact.
What valuable information can the examination of radial and tangential fracture lines on sequentially struck glass provide?Glass fractures in a distinct pattern when subjected to impact. Radial and tangential fracture lines can be observed on the glass surface, and by examining their characteristics, valuable information can be derived. Firstly, the refractive index of the glass can be determined by analyzing the angles and spacing of the fracture lines. This information is useful for forensic investigations and determining the type of glass involved. Secondly, by studying the sequence and intersection points of the fracture lines, it is possible to determine the order in which the projectiles struck the glass. This can provide crucial insights into the dynamics of the event and aid in reconstructing the sequence of events accurately.
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Which of the following refers to the force of the earth pulling on an object? A Force B. Gravity C. Biomechanics Levers
Answer:
B. Gravity
Explanation:
Earth pulling on an object is known as gravity.
Which ones are true which ones are false
Eric’s sister Marjorie is asked to explain the term deceleration. She tells Eric, “negative acceleration always means deceleration.” Eric tells her that she is wrong. He then explains her error. Which statement can Eric use to correct his sister?
A car moving to the right will still go to the right when the braking force is applied
A car moving to the right will always go to the left when the braking force is applied
A force applied in the opposite direction of an object’s motion will always reverse the motion of the object
A force applied in the opposite direction of the object’s motion will always bring an object to rest
A car moving to the right will still go to the right when the braking force is applied is about negative acceleration.
What is negative acceleration?Any procedure where the velocity varies is referred to as acceleration. There are only two ways to accelerate: changing your speed or changing your direction, or changing both. This is because velocity is both a speed and a direction.
When an item experiences negative acceleration, its velocity changes in a negative direction, which can suggest that it is moving either slower or faster. In physics, a change in an object's velocity is referred to as "acceleration."
Since this change in velocity is a vector quantity, it denotes both magnitude and direction. Positive velocity is also a vector, and experiencing negative acceleration means that something is slowing down.
Therefore, A car moving to the right will still go to the right when the braking force is applied is about negative acceleration.
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Please show work with the answer and thank you
Answer:
its your homework
Explanation:
you aren't getting any free answers out of me because it sounds like your trying to be smart your welcome
(Not smarter than me)
You are looking straight down on a magnetic compass that is lying flat on a table. A wire is stretched horizontally under the table, parallel to and a short distance below the compass needle. The wire is then connected to a battery so that a current I flows through the wire. This current causes the north pole of the compass needle to deflect to the left. The questions that follow ask you to compare the effects of different actions on this initial deflection. If the wire is lowered farther from the compass, how does the new angle of deflection of the north pole of the compass needle compare to its initial deflection? You did not open hints for this part. It is larger. It is smaller. It is unchanged.
The new angle of deflection of the north pole of the compass needle compare to its initial deflection is smaller.
The new angle of deflection north pole becomes smaller
The angle of deflection is the angle formed when an object changes course from its original course of direction or target.
The angle of deflection of a particular particle is directly proportional to its charge to mass ratio as it passed through an electric field.
As the wire is continuously being lowered farther from the compass, the angle of deflection of the north pole continues to become smaller when compared to its initial deflection.
Therefore, the new angle of deflection of the north pole of the compass needle compare to its initial deflection is smaller.
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Please help me with this, it's a Kinematics Equation 2 problem!
The distance covered by the object is given as,
\(d=ut+\frac{1}{2}at^2\)Plug in the known values,
\(\begin{gathered} d=(0\text{ m/s)(9 s)+}\frac{1}{2}(2m/s^2)(9s)^2 \\ =0\text{ m+}81\text{ m} \\ =81\text{ m} \end{gathered}\)Thus, the distance covered by the object is 81 m.
At what projection angle will the range of a projectile equal its maximum height?.
At projection angle of 45 degrees, the range of a projectile equals its maximum height.
A projectile is an object that is thrown or launched into the air and then travels along a path determined by gravity. The most common example of a projectile is a ball, which is thrown into the air or launched from a cannon or other device. A projectile is subject to two main forces: gravity, which pulls it down towards the ground, and air resistance, which slows it down as it moves through the air.
The range of a projectile equals its maximum height at a projection angle of 45 degrees. This is the ideal angle at which to launch a projectile if the goal is to achieve the maximum range while also achieving the maximum height. At other angles, the range will either be less than the maximum height or the maximum height will be less than the maximum range. Therefore, 45 degrees is considered to be the optimum angle for maximum range and height of a projectile.
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Calculate the pressure 500m below the surface of water. Density of water is 1000kg/m^3. Take g=100m/s^2.
Answer:
We know that,
hydrostatic \: pressure (p) = \alpha hghydrostaticpressure(p)=αhg
Where,
\alpha = density \: of \: water \: = 1000α=densityofwater=1000
h = Height at which pressure is to be calculated
p = 1000 \times 12 \times 9.8 = 117600 \:p=1000×12×9.8=117600
Applicate the formula:
p = ρ*g*d
Data:
p = Pressure = ¿?
ρ = Density = 1000 kg/m³
g = Gravity = 9,81 m/s²
d = Distance = 500 m
Replacing:
p = 1000 kg/m³ * 9,81 m/s² *500 m
Resolving:p = 4905000 Pa
The pressure at that deep is 4905000 Pa.
(A)Heat flow(B)Kinetic energy(C)Potential energy(D)First law of thermodynamics(E)Second law of thermodynamicsThe amount of energy in an isolated system stays constant.ABCDE
what percentage of the power of the battery is dissipated across the internal resistance and hence is not available to the bulb?
Approximately 66.67% of the power of the battery is dissipated across the internal resistance and is not available to the bulb.
The percentage of the power of the battery dissipated across the internal resistance and hence not available to the bulb can be calculated using the formula:
Percentage of power dissipated = (power dissipated across internal resistance / total power) x 100%
The power dissipated across the internal resistance can be calculated using the formula:
Power dissipated =\(I^2 x R\)
where I is the current flowing through the circuit, and R is the internal resistance.
Since the internal resistance is given as 2.0 ohms, the power dissipated across it can be calculated as:
Power dissipated = I^2 x R = (0.50 A)^2 x 2.0 ohms = 0.50 W
The total power supplied by the battery can be calculated as:
Total power = V x I = (1.5 V) x (0.50 A) = 0.75 W
Therefore, the percentage of power dissipated across the internal resistance can be calculated as:
Percentage of power dissipated = (power dissipated across internal resistance / total power) x 100%
= (0.50 W / 0.75 W) x 100%
= 66.67%
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Mr. Temper, a 5-foot, 4-inch, 100-pound hothead, tells Mr. Big, a 300-pound professional wrestler, that he is going to "make him regret he set foot in this bar." At the same time, Temper clenches and raises his fists. Big looks at Temper from head to toe and responds, "yeah, right." Big can sue Temper for: a. assault
b. battery
c. assault and battery
d. Big has no cause of action
Big has no cause of action against Temper. In this scenario, while Temper may have made a verbal threat and raised his fists in a confrontational manner, there is no indication that he physically touched or harmed Big.
Assault refers to the act of intentionally causing apprehension or fear of imminent harmful or offensive contact. Battery, on the other hand, involves the intentional and harmful or offensive physical contact with another person without their consent.
In this case, Temper's actions may constitute assault due to the verbal threat and raising his fists, creating an atmosphere of fear or apprehension. However, since no physical contact or harm occurred, battery is not applicable. Therefore, the appropriate response is option d: Big has no cause of action against Temper.
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What happens as you move the north side of the magnet into the coil?
Given:
A coil is connected to the bulb and a magnet is placed near the coil.
To find the consequence of moving the north side of the magnet towards the coil.
Explanation:
The changing magnetic field across the coil induces a current in the coil.
This is known as electromagnetic induction.
Here, the north side of the magnet moves towards the coil, this results in the change in the magnetic field across the coil.
The changing magnetic field induces a current in the coil.
As the coil is connected to the bulb, the induced current produced in the coil due to the moving magnetic field passes through the bulb.
Thus, the bulb glows.
Final Answer: The bulb glows as we move the north side of the magnet into the coil.
Do we have to go to space to determine if life can exist on these other planets? Where are they investigating what life might look like on other planets?
Answer:
no we can send rovers into space to explore i am reading the martian but this is my opinion it depends on what nasa decides
Explanation: