Answers
Answer:
\(F= 17,075\ N\)
Explanation:
When the car is under an accelerating force and hits a tree, the instant force received by the tree is the same force that is accelerating the car.
The accelerating force can be calculated using Newton's second law:
\(F=m\cdot a\)
Where m is the mass of the car and a is the acceleration.
\(F=3,415\ kg\cdot 5\ m/s^2\)
\(\boxed{F= 17,075\ N}\)
Related Questions
A string of length 75.0cm has fixed ends. Two consecutive harmonics are 420 Hz and 315 Hz. Find the wave speed and the fundamental frequency.
please use equations: f=vλ and λ=\(\frac{2L}{n}\)
Answers
The wave speed is 840 cm/s and the fundamental frequency is 1120 Hz.
Frequency is the number of cycles of a periodic waveform that occur per unit of time. It is measured in Hertz (Hz).
We can use the equation λ=2L/n, where λ is the wavelength, L is the length of the string, and n is the harmonic number. Since the string has fixed ends, the harmonics must be odd-numbered, so we have n=1 for the fundamental frequency, n=3 for the second harmonic (315 Hz), and n=5 for the third harmonic (420 Hz).
Using n=1 and λ=2L/n, we get:
λ = 2L/1
λ = 2L
Using n=3 and λ=2L/n, we get:
λ = 2L/3
Using n=5 and λ=2L/n, we get:
λ = 2L/5
We can use the formula f=v/λ to relate the wave speed v, wavelength λ, and frequency f. For the two consecutive harmonics, we can write:
v/λ1 = f1
v/λ2 = f2
Since the two harmonics are consecutive, we can assume that they correspond to adjacent values of n, so we have:
λ1 = 2L/1 = 2L
λ2 = 2L/3
Substituting these values into the above equations and solving for v, we get:
v = f1λ1 = f2λ2 = (420 Hz)(2L) / (2L) = (315 Hz)(2L)/(2L/3) = 840 cm/s
To find the fundamental frequency, we use the formula f=v/λ1:
f = v/λ1 = 840 cm/s / 2L = (840 cm/s) / (0.75 m) = 1120 Hz
Therefore, the wave speed is 840 cm/s and the fundamental frequency is 1120 Hz.
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Choose the true statement(s) about binary fission in prokaryotic cells. There may be more than one correct answer.
1. Binary fission is a type of sexual reproduction which introduces genetic variation from parent to offspring.
2. Binary fission frequency differs between species and is affected by environmental conditions.
3. Binary fission is a type of asexual reproduction that is simpler than mitosis.
4. Binary fission results in offspring, which are genetically identical to the parent cell.
Answers
Answer:
2. Binary fission frequency differs between species and is affected by environmental conditions
4. Binary fission results in offspring, which are genetically identical to the parent cell.
Explanation:
Binary fission is the process of asexual reproduction of single-celled organisms that consists of dividing a cell into two by mitosis, each with the same genome as the "mother cell" (with the same DNA or genetic material as the "mother cell" ).
The binary fission process is directly affected by genetics, that is, it varies from species to species. In addition, binary fission occurs depending on specific environmental conditions (such as water, optimal temperatures and also pH).
Which sequence shows the chain of energy transfers that create surface currents on the ocean?
Answers
Answer:
The correct answer is A. The sun is the energy source of the surface currents in the ocean
The energy transfer starts from solar energy , then wind energy and finally wind energy is the cause of surface current .
What is surface current ?Surface currents are currents that are located in the upper feet of the ocean , they are simply how water moves from one place to another . Pattern of surface current are determined by wind direction .
Surface currents are formed by global wind system that are fueled by energy from the sun . Because of heating effect of sun , the earth's atmosphere gets warmed up . As we know , warm air is lighter then cool air , it rises up and create low pressure near the equator because of this wind causes surface currents the ocean .
hence , The energy transfer starts from solar energy , then wind energy and finally wind energy is the cause of surface current .
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Which of the following diagrams shows the greatest magnitude net torque with a zero net force? All the rods, of length 2r, rotate about an axis that is perpendicular to the rod and fixed in the center of the rod. All the forces are of magnitude F or 2F and all distances from the axis are r or r/2.
Answers
The diagram that shows the greatest magnitude net torque with a zero net force is the diagram in second option.
option B is the correct answer.
What is net torque?
The net torque is the sum of the individual torques. The torque itself is obtained from the product of applied force and the perpendicular distance of the force.
In rotational equilibrium, there is no net torque on the object. There may be individual torques, but they add up to zero and cancel each other out.
Mathematically, the formula for torque is given as;
τ = Fr
where;
F is the applied forcer is the perpendicular distanceThe torque applied to an object increases with increase in the perpendicular distance.
To obtain a zero net force, sum of all the opposite forces applied to an object must be equal to zero.
The forces must be equal in magnitude but opposite in direction, and the diagram that meets this specification is the last graph.
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Have you ever seen long trains snake through the countryside? Sometimes a train will have two or more locomotives, or engines, pulling it. And, occasionally, a train will have one or more locomotives at the very end. Why would a train need more than one locomotive? Apply what you have learned about forces and net forces to explain what problems might be solved by adding locomotives to a train.
Help please D:
Answers
Trains with multiple locomotives are often used to address two primary issues related to forces and net forces: the need for additional power to pull a heavy load, and the need to distribute that pulling power more evenly across the length of the train.
A locomotive, also known as a "locomotive engine" or simply a "loco," is a type of railway vehicle that provides the motive power for a train. It is essentially a self-propelled engine that generates the power necessary to move the train along the tracks. Locomotives can be powered by various means, including steam, diesel, or electricity, and they typically feature a large, distinctive shape with a cylindrical body and a smokestack. The locomotive is often considered the most important part of a train, as it is responsible for providing the power and control needed to move the train safely and efficiently along the tracks.
First, trains carrying heavy loads such as coal, ore, or shipping containers require a lot of pulling power to get moving and keep moving at a steady speed. If a single locomotive isn't powerful enough to provide the necessary force to pull the entire train, additional locomotives can be added to increase the pulling power. This is known as "doubling up" or "tripling up" the locomotives, and it allows the train to move heavy loads more efficiently.
Second, adding locomotives to the front and back of a long train helps to distribute the pulling power more evenly across the length of the train. A long train can experience significant resistance or drag, which can slow down the train or even cause it to come to a stop. By adding locomotives at both ends, the pulling force is distributed more evenly throughout the length of the train, reducing the overall drag and making it easier to maintain a steady speed.
Therefore, adding locomotives to a train can help to provide additional power to pull a heavy load and distribute that pulling power more evenly across the length of the train. This allows the train to move more efficiently and maintain a steady speed, ultimately making it more productive and cost-effective for the transportation of goods.
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Compare and contrast, in detail, at least two types of pluralism. Do you think the United States is becoming more pluralistic? Why or why not? How do ethnic enclaves relate to pluralism in the US?
Answers
Two types of pluralism are cultural pluralism and political pluralism and the United States is arguably becoming more pluralistic because of demographical changes.
How is the United States becoming more pluralistic ?Cultural pluralism refers to the coexistence of multifarious cultures and lifestyles, while political pluralism entails diverse political beliefs, parties, and interest groups that work together towards a common goal. Due to demographic changes, the United States is becoming more pluralistic as an increasing number of immigrants, refugees, and minority groups have become part of its population.
Ethnic enclaves epitomize cultural pluralism in America since they exhibit both challenges and opportunities stemming from differences in culture. On one hand, ethnic enclaves represent forms of seclusion or segregation where individuals retreat into their own cultural and linguistic worlds. On the other hand, they serve as thriving communities within cities that welcome diversity.
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. A circuit is constructed with three 5 resistors. What is the maximum andminimum current drawn from a 12 V battery with some combination of allthree of these resistors? Is there a third level of current possible?
Answers
The maximum current is in a parallel circuit. On the other hand, the minimum current is in a series circuit. An arrangement with parallel and series would be between these two currents.
The third level would be the combination.
\(\begin{gathered} Combination \\ V=I(\frac{1}{R1}+\frac{1}{R2+R3})^{-1};\text{ }R2,R3\text{ in series} \\ 12=I(\frac{3}{10})^{-1} \\ 12\cdot\frac{3}{10}=I=3.6A \end{gathered}\)which kepler supported the copernican model of the universe, kepler concluded the following
Answers
Answer:
is it a multiple choice if not ill comment when i find the answer
Explanation:
A cannon sits on top of a cliff that is 20 meters above an area of level ground. It fires a 5 kg cannonball horizontally (cannonball A) at 5 meters/second. At the same time, a second cannonball (cannonball B) is dropped from the same height. If air resistance is ignored, which cannonball will hit the ground first?
Note: The gravitational acceleration due to the Earth is 9.8 m/sec².
A. Cannonball A
B. Cannonball B
C. Both will hit the ground at the same time.
D. It can not be found from the given information.
Answers
Answer:
d
Explanation:
Write a short essay describing the six key features of Mesopotamia. Be sure to include how it advanced human society as a whole.
Answers
Mesopotamia, with its key features of specialization, government, cities, religion, trade, and written records, advanced human society by fostering economic growth, establishing governance structures, creating urban centers, facilitating cultural exchange, promoting trade networks, and revolutionizing communication and knowledge preservation through writing.
Mesopotamia, often referred to as the "cradle of civilization," possessed several key features that contributed to its advancement and influenced human society as a whole. These features include specialization, government, cities, religion, trade, and written records. Let's explore each of these key features and their significance.
Specialization: Mesopotamian society developed specialization, where individuals began to focus on specific occupations and trades. This led to the emergence of skilled craftsmen, farmers, priests, scribes, and merchants. Specialization allowed for the production of surplus goods, leading to economic growth and the establishment of a more complex society.
Government: Mesopotamia witnessed the development of early forms of government. Initially, city-states were governed by religious leaders known as priest-kings. Over time, as society grew more complex, secular leaders, such as kings, emerged to rule the city-states. These early forms of governance laid the foundation for later systems of government and administration.
Cities: Mesopotamia was characterized by the rise of urban centers. These cities served as political, economic, and cultural hubs. They were densely populated, with advanced infrastructure, including defensive walls, temples, markets, and residential areas. The cities of Mesopotamia, such as Ur, Uruk, and Babylon, provided the framework for the organization and development of early urban societies.
Religion: Religion played a central role in Mesopotamian society. The people of Mesopotamia believed in a pantheon of gods and goddesses and practiced polytheism. Temples were constructed as sacred spaces to honor and worship deities. Priests held significant influence, serving as intermediaries between the people and the divine. Religious beliefs and rituals provided a sense of identity, social cohesion, and moral guidance to the Mesopotamian community.
Trade: Mesopotamia's strategic location between major rivers, the Tigris and Euphrates, facilitated extensive trade networks. The abundance of resources, such as fertile land for agriculture, allowed for surplus production. This surplus was exchanged with neighboring regions, fostering trade and the establishment of commercial relationships. The exchange of goods and ideas through trade networks promoted cultural diffusion and contributed to the overall prosperity and interconnectedness of Mesopotamia.
Written Records: Mesopotamia is credited with the invention of writing, making it one of the earliest literate civilizations. Scribes used wedge-shaped marks known as cuneiform to record important information on clay tablets. The development of writing enabled the recording of laws, contracts, administrative documents, literature, and historical accounts. Written records not only facilitated communication and administration but also served as a means of preserving knowledge and passing it down through generations.
Collectively, these key features of Mesopotamia played a pivotal role in advancing human society as a whole. Specialization allowed for the efficient allocation of resources and the growth of economies. The establishment of early forms of government provided organization and stability to communities. Urbanization transformed social structures and fostered cultural and intellectual exchange. Religion served as a unifying force and provided a moral framework. Trade networks expanded horizons and facilitated the exchange of goods and ideas. Finally, the invention of writing revolutionized communication, education, and the preservation of knowledge.
Therefore, Mesopotamia's legacy as a cradle of civilization lies in its ability to establish foundations for complex societies, laying the groundwork for subsequent advancements in various aspects of human life.
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IX
8. Katrina moves a magnetic toy train toward a magnet that cannot move. What happens to the
potential energy in the system of magnets during the move?
fore
Answers
Answer:
Explanation:
Potential energy increases because the train moves against the magnetic force.
Please answer these questions correctly (photo is attached) I’ll give brainliest
Answers
2 gravity
3 friction
4 balanced force
5 contact force
6 combine
7 unbalanced force
8 force
which one of the following parameters is not used to determine the magnetic force on a current-carrying wire in a magnetic field?
Answers
Radius of wire is not used to determine the magnetic force on a current-carrying wire in a magnetic field
What is a magnetic field?A magnetic field is a region in space where magnetic forces can be detected. It is created by the motion of electric charges, such as the movement of electrons in an electric current or the spinning of electrons in an atom.
A magnetic field is represented by lines of force that can be visualized using magnetic field lines. These lines indicate the direction of the magnetic field at each point in space and the strength of the magnetic field is indicated by the density of the lines.
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(For example, if you used a lunch meat that claimed to be 97% fat-free, were just 3% of its calories provided by fat?) If the manufacturer made such claims, how do you explain the difference between the manufacturer's claims and your findings?
Salmon
Answers
The difference between the manufacturer's claims and your findings is, the manufacturer is concerned about amount of fat in the meat while you are concerned about calories.
Difference between your findings and the manufacturers claimYour findings concluded that only fat can provide calories needed in the body, perhaps other classes of food or nutrients in the meat can provide calories as well.
In the manufacturer's claim there are about 3% fat in the lunch meat and doesn't necessary mean that all the calories needed is the 3% fat.
Thus, there are lots of difference between your findings and the manufacturer's claim. The manufacturer is concerned about amount of fat in the lunch meat while you are concerned about calories in the meat.
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In the free-body diagram, what is the net force? (Hint-Trig.- SOH-CAH-TOA)
a. 35 N right
b. 28 N right
c. 75 N
Answers
If you exert a force of 24 N to lift a box adistance of 2.24 m, how much work do youdo?Answer in units of J
Answers
We are given that a force of 24N is exerted on an object to lift it a distance of 2.24m. To determine the work done we will use the following formula:
\(W=Fd\)Where:
\(\begin{gathered} W=\text{ work} \\ F=\text{ force} \\ d=\text{ distance} \end{gathered}\)Substituting the values we get:
\(W=(24N)(2.24m)\)Solving the operations:
\(W=53.76J\)Therefore, the work done is 53.76 Joules.
A car with a mass of 1200kg is traveling west at 25 m/s collides head on with highway barrier. The car comes to rest in 0.35 seconds . What is the magnitude of the force and the impulse applied to the car
Answers
The magnitude of the force and the impulse applied to the car are 85714 N and 30000 N-s respectively.
What is force?
The definition of force in physics is: The push or pull on a massed object changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.
The magnitude of the force applied to the car = change in momentum/time interval
= (1200 kg × 25 m/s - 1200 kg×0)/0.35 second
= 85714 N.
The impulse applied to the car = change in momentum
= (1200 kg × 25 m/s - 1200 kg×0)
= 30000 N-s.
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How are the parts of birds and fish similar in structure and function?
Answers
Answer:
Birds and fish both have a backbone structure, which makes them structurally and functionally similar.
Explanation:
The density of gold is 19.3 gm/cc. Express it's value in SI unit.
Answers
Answer:
SI unit of density is kg/m^3
Using unit conversion:
density = 19.3 * 1000 kg/m^3
Explanation:
I assume that you are asking for the density conversion to SI, sorry if this isn't what you were asking.
Complete the following table about metric units
Answers
The change in the speed of the object is constant with constant increment of 5 m/s.
What is change in speed?The change in the speed of an object is the rate at which the distance covered by the object changes with time.
The change in the speed of the object at various time is calculated as follows;
at time, t = 0 second, change in speed (Δv) = 0
at time, t = 1 second, change in speed (Δv) = 5 m/s - 0 m/s = 5 m/s
at time, t = 2 seconds, change in speed (Δv) = 15 m/s - 5 m/s = 10 m/s
at time, t = 3 seconds, change in speed (Δv) = 30 m/s - 15 m/s = 15 m/s
at time, t = 4 seconds, change in speed (Δv) = 50 m/s - 30 m/s = 20 m/s
at time, t = 5 seconds, change in speed (Δv) = 75 m/s - 50 m/s = 25 m/s
Thus, we can conclude that, the data given in the table has time which increased gradually while the speed also increase gradually but with a constant increment.
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The water waves below are traveling along the surface of the ocean at a speed of 2.5 m/s and
splashing periodically against Wilbert's perch. Each adjacent crest is 5 meters apart. The crests
splash Wilbert's feet upon reaching his perch. How much time passes between each successive
drenching?
Answers
Answer:2 seconds
Time= Distance/speed
=50/25
=2seconds
An arrow is shot at an angle of 10 degrees below the horizontal. The initial velocity of the arrow was 100 m/s. If the arrow was fired at a height of 1.5 meters, then how far did it travel before hitting the ground?
Answers
We can use the kinematic equations of motion to solve this problem.
The horizontal component of the velocity remains constant throughout the flight of the arrow, and is given by:
v_x = v * cos(theta) = 100 m/s * cos(10) = 98.4 m/s
where theta is the angle below the horizontal.
The vertical component of the velocity changes due to gravity, and is given by:
v_y = v * sin(theta) = 100 m/s * sin(10) = 17.3 m/s
The time it takes for the arrow to hit the ground can be found using the equation:
y = y_0 + v_y*t + (1/2)at^2
where y is the final height (0 m), y_0 is the initial height (1.5 m), a is the acceleration due to gravity (-9.8 m/s^2), and t is the time of flight.
Substituting in the known values, we get:
0 = 1.5 m + 17.3 m/s * t - (1/2) * 9.8 m/s^2 * t^2
Solving for t, we get:
t = 3.41 s
Finally, the horizontal distance the arrow traveled can be found using:
d = v_x * t = 98.4 m/s * 3.41 s = 335.6 m
Therefore, the arrow traveled a horizontal distance of 335.6 meters before hitting the ground.
Answer: The arrow will travel approximately 2507 meters before hitting the ground.
Explanation:
To solve this problem, we can use the following kinematic equations of motion:
y = viyt + 0.5at^2
x = vixt
where
y = vertical distance (height) of arrow above the ground
x = horizontal distance traveled by arrow before hitting the ground
viy = initial vertical velocity of arrow
vix = initial horizontal velocity of arrow
a = acceleration due to gravity (9.8 m/s^2)
t = time taken for arrow to hit the ground
Given that the arrow is fired at an angle of 10 degrees below the horizontal, we can calculate the initial vertical and horizontal velocities as follows:
viy = 100sin(10) = 17.45 m/s
vix = 100cos(10) = 98.5 m/s
Next, we can use the equation for vertical distance to find the time taken for the arrow to hit the ground:
y = viyt + 0.5at^2
1.5 = 17.45t + 0.59.8t^2
Solving for t, we get t = 1.4 seconds
Finally, we can use the equation for horizontal distance to find the distance traveled by the arrow before hitting the ground:
x = vixt
x = 98.51.4 = 137.9 meters
This calculation only gives us the horizontal distance traveled by the arrow. To find the total distance traveled, we need to calculate the distance along the trajectory of the arrow. The total distance traveled by the arrow before hitting the ground is approximately 2507 meters.
Two people stand a distance L apart along an east-west road. They both clap their hands at precisely noon in the ground frame. You are driving eastward down this road at speed 4c/5. You notice that you encounter the western person at the same instant (as measured in your frame) that the eastern person claps. Where are you along the road at the instant (as measured in your frame) that the western person claps?
Answers
Answer:
Location along the road = 9/15 L
Explanation:
speed eastward = 4c/5
distance between people standing = L
Location along the road at the instant the western person claps =
= 5/3 L - 16/5 L = 9/ 15 L
attached below is a detailed solution
Trina launches a water balloon at a speed of 11.9 meters per second, in the positive x-direction, at an angle of 24.9° above horizontal. What are the components of the velocity vector right before the balloon strikes the ground?
Select one:
a. {v_{x}} = 10.8 m/s, {v_{y}} = -5.01 m/s
b.{v_{x}} = 5.27 m/s, {v_{y}} = -10.8 m/s
c. {v_{x}} = 10.8 m/s, {v_{y}} = 5.01 m/s
d.{v_{x}} = -5.27 m/s {v_{y}} = 10.8 m/s
Answers
Answer:
a. {v_{x}} = 10.8 m/s, {v_{y}} = -5.01 m/s
Explanation:
The initial velocity components are
Horizontal 11.9cos24.9 = 10.8 m/s
Vertical 11.9sin24.9 = 5.01 m/s (where up is assumed positive)
In the absence of air resistance, the horizontal velocity will remain unchanged and, assuming the ground is horizontal, the vertical velocity will have completely reversed directions.
2. A girl and her bicycle have a total mass of 40 kg. At the top of the hill her speed is 5.0 m/s.
The hill is 10 m high and 100 m long.
If the magnitude of the force of friction as she rides down the hill is 20 N, what is her speed
at the bottom of the hill? (Take g=9.8 m/s?)
(a) 5.0 m/s
(b) 10 m/s
(c) 11 m/s
(d) 18 m/s
(e) She stops before she reaches the bottom.
Answers
Answer:
Explanation:
1. First draw a free body diagram of the scenerio (a block sliding down a a slant surface).
2. Then we analyze the forces and write equations that satisfy Fnet = ma. This will give us the acceleration as the block slides down the surface.
3. Last, we can use the kinematic equation (vf^2 = vi^2 + 2as) and to solve the final speed of the block.
A student builds a battery-powered car from a kit. Which series of energy transformations takes place as the car drives forward? A. Chemical energy Mechanical energy Electrical energy 1 - B. Chemical energy Electrical energy Mechanical energy 1. C. Mechanical energy - Electrical energy - Chemical energy. D. Electrical energy Chemical energy Mechanical energy
Answers
Answer:
B
Explanation:
First the battery uses chemical energy ===> to make electrical energy ===> to make mechanical energy
A mass of 5.00 kg pulls down vertically on a string that is wound around a rod of radius 0.100 m and negligible moment of inertia. The rod is fixed in the center of a disk. The disk has mass 125 kg and radius 0.2 m. They turn freely about a fixed axis through the center. What is the angular acceleration of the rod, in radians/s 2
Answers
Answer:
0.981 rad/sec^2
Explanation:
mass that pulls on string = 5 kg
weight due to mass = 5 x 9.81 = 49.05 N
radius of rod = 0.1 m
torque produced by this force on the rod = force x radius
torque = 49.05 x 0.1 = 4.905 N-m
mass of disk = 125 kg
radius of disk = 0.2 m
moment of inertia of the disk I = m\(r^{2}\)
I = 125 x \(0.2^{2}\) = 5 kg-m^2
from the equation, T = Iα
where T is torque
I is moment of inertia
α is angular acceleration
imputing values,
4.905 = 5α
α = 4.905/5 = 0.981 rad/sec^2
What is the direction
Answers
Answer:
Explanation:
\(tan^{-1} (4/3) = 53.3\)
A cheerleader of mass 55 kg stand on the shoulders of a football player of mass 86 kg. The football player is standing in a soft, thin layer of mud that does not permit air under his shoes. If each of his shoes has an area of 264 cm2, calculate the absolute pressure exerted on the surface underneath one of the shoes. Answer in Pascal, assuming g = 9.80 m/s2 and atmospheric pressure is 101,000 Pa.
Answers
what is a shargaff rule
Answers
According to Chargaff's rule, the amounts of adenine (A), thymine (T), and guanine (G) in the DNA molecule are equal to each other. The amounts of cytosine (C) and guanine (G) are also equal.
Who is Chargaff ?Erwin Chargaff was a biochemist, author, Bucovinian Jew who immigrated to America during the Nazi era, and professor of biochemistry at Columbia University's medical school.
Chargaff found patterns among the four bases, or chemical building blocks, of DNA, which are directly related to DNA's function as the genetic material of living things.
He was born in Austria-Hungary. Heraclitean Fire: Sketches from a Life Before Nature, an autobiography he penned, received positive reviews.
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