Answers
Explanation:
To find the magnitudes of the cyclist's radial and tangential accelerations when his speed is 10 m/s, we can use the equations for radial and tangential acceleration:
Radial acceleration: ar = v^2 / r
Tangential acceleration: at = a - ar
where ar is the radial acceleration, at is the tangential acceleration, v is the speed, r is the radius of the curve, and a is the acceleration (in this case, the deceleration of 0.5 m/s^2).
Plugging in the values given in the problem, we get:
ar = (10 m/s)^2 / (30 m) = 0.33 m/s^2
at = (-0.5 m/s^2) - (0.33 m/s^2) = -0.83 m/s^2
Therefore, the magnitude of the radial acceleration is 0.33 m/s^2, and the magnitude of the tangential acceleration is -0.83 m/s^2.
Note that the negative sign on the tangential acceleration indicates that it is directed opposite to the velocity, which is consistent with the fact that the cyclist is decelerating.
Related Questions
Hello! How do you answer a question? I will give you 25 points if you answer it. :)
Answers
Answer:
press add answer and it will let you answer the question
Explanation:
Answer:
you click on the question, then you click answer, then type what you want, and click the green button on the top right saying dd your answer
Explanation:
An electric fan is made up of several simple machines. Tell where you would find an inclined plane on a fan. Also, tell where you would find a wheel and axle.
Answers
The fan blades or propellers of an electric fan are examples of an inclined plane. The blades' frequently curved or angled shapes provide an inclined surface that effectively moves air.
Air is forced along the incline as the blades spin, creating airflow. An electric fan's motor assembly includes a wheel and an axle. The rotor, a revolving component, is connected to the motor's central shaft, also known as the axle.
Usually cylindrical in form, the rotor serves as the wheel. The motor spins around the fixed axle when electrical power is applied, which causes the fan blades to move and the air to circulate.
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What is the sum of the following vectors?
Answers
Answer:h
Explanation:
Julianna walks 10 meters East, 15 meters South and 20 meters North. What is her resultant displacement?
Answers
Julianna's resultant displacement when she walks 10 meters East, and 15 meters South and 20 meters North is 11.18m North-East.
What is displacement?displacement can be defined as distance in a specified direction.
To calculate the resultant displacement of the Julianna, we use the formula below.
Formula:
R = √[D²+(d-d')²]............ Equation 1Where:
R = Julianna's resultant displacementD = Julianna's First displacementd' =Julianna's Second displacementd = Julianna's Third displacementFrom the question,
Given:
D = 10 m Eastd = 20 m Northd' = 15 m SouthSubstitute these values into equation 1
R = √[10²+(20-15)²]R = √(100+5²)R = √125R = 11.18 m North-EastHence, Julianna's resultant displacement is 11.18 m North-East.
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The observation of a rainbow, shown here, often occurs on a rainy day during or immediately after an afternoon shower. The observer notices that this occurrence often happens on a late sunny afternoon after a rain shower. What explanation fits with the phenomenon seen here? Select ALL that apply.
Answers
Answer:
A) Light refracts through different media, causing rainbows.
B) Light from the sun is moving through air and moisture at the same time.
E) Light moving through water moves at different speeds, causing different wavelengths to appear at separate locations.
Explanation:
The answers are A, B, and E because I got them on USATestprep
1. At what displacement the kinetic energy and potential energy of a particle executing SHM will be equal when the amplitude is 3cm?
Answers
The displacement at which the kinetic energy and potential energy of a particle executing SHM will be equal when the amplitude is 3cm is 1.5cm.
How does the amplitude of simple harmonic motion affect the ratio of kinetic to potential energy at a specific displacement?The amplitude of simple harmonic motion affects the ratio of kinetic to potential energy at a specific displacement in the following way: as the amplitude increases, the ratio of kinetic to potential energy decreases. This is because the amplitude represents the maximum displacement from the equilibrium position, and as the amplitude increases, the potential energy of the particle increases, while the kinetic energy remains constant. Therefore, at a specific displacement, a particle with a larger amplitude will have a greater proportion of its energy in the form of potential energy, while a particle with a smaller amplitude will have a greater proportion of its energy in the form of kinetic energy.
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How mechanical energy can be transformed into wind energy and how
Answers
Explanation:
As wind moves past the blades of a wind turbine, it moves or rotates the blades. These blades turn a generator. A generator works as an inverse of an electric motor; instead of applying electrical energy to turn it and create mechanical energy, it uses mechanical energy to turn and create electrical energy. SIMPLE WORDS: a wind turbine moves which is mechanical energy and the way it moves is by the wind blowing and it goes both ways mechanical energy into wind energy wind energy into mechanical and when turbines move it creates wind also
Which example best describes Newton's third law of motion?
F
When a glass slid across a table, it spilled water when it stopped suddenly.
G
An engine used less work to move a lighter car than when it moved a heavier car.
H When a passenger stepped from a boat to the shore, the boat moved away from the shore .
Answers
The best example of Newton's third law of motion is, When a passenger stepped from a boat to the shore, the boat moved away from the shore. Thus, option C is correct.
Sir Issac Newton gives three laws of motion. The first law states that an object remains at rest or in continuous motion unless an external force acted on it. The second law stated that the force is directly proportional to the acceleration of the object. Newton's third law states that, for every action, there is an equal and opposite reaction.
From the given, Newton's third law is applicable, When a passenger stepped from a boat to the shore, the boat moved away from the shore. This shows the action and reaction of the boat and shore.
Thus, the ideal solution is option C.
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Action and reacion forces are described by which of Newton's laws of motion?
O first
O second
Othird
O fourth
Answers
every action has an opposite and equal reaction
You try to live strictly by the moral rules contained in your religion's moral code. The two most important rules are "Be merciful" (don't give people what they deserve) and "Be just" (give people exactly what they deserve). Now suppose a man is arrested for stealing food from your house, and the police leave it up to you whether he should be prosecuted for his crime or set free. Should you be merciful and set him free, or be just and make sure he is appropriately punished? How do you resolve this conflict of rules? Can your moral code resolve it? To what moral principles or theories do you appeal?
Answers
The punishment that the man must receive in the case of stealing the food from a house, must be based on the moral and ethical code of the society, being essential to analyze the case individually, for a more effective judgment.
Moral codeIt is a set of rules and agreements established for the development of good practices and maintenance of society. It is correct to say that an attitude that leads to survival is seen as a moral action.
Therefore, stealing food can be considered an immoral action, based on the ethical theory of moral absolutism, which says that every action contains inherent values of right or wrong, regardless of motivation.
Already based on the ethical theory of consequentialism, the consequences of an act must be taken into account when judging it as right or wrong.
In the US, what happens in this situation, therefore, is that if the theft is less than a value, the individual will be charged with misdemeanor for petty theft, and can be punished with fines and up to six months in prison.
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A car travels through a valley at constant speed, though not at constant velocity. Explain how this is possible.
Answers
Answer:
Explanation:
An object following a circular path can be covering the same distance along the circle's circumference with every passing minute, giving it a constant speed. Since a change in either speed OR direction means a change in velocity, the object's velocity is not constant.
velocity is a vector so therefore direction affects it being constant.
An object's acceleration is the rate its velocity (speed and direction) changes. Therefore, an object can accelerate even if its speed is constant - if its direction changes. If an object's velocity is constant, however, its acceleration will be zero.
Velocity is a vector so therefore direction affects it being constant.
What is velocity?When an item is moving, its velocity is the rate at which its direction is changing as seen from a certain point of view and as measured by a specific unit of time
An object following a circular path can be covering the same distance along the circle's circumference with every passing minute, giving it a constant speed. Since a change in either speed OR direction means a change in velocity, the object's velocity is not constant. An object's acceleration is the rate its velocity (speed and direction) changes. Therefore, an object can accelerate even if its speed is constant - if its direction changes. If an object's velocity is constant, however, its acceleration will be zero.
Velocity is a vector so therefore direction affects it being constant.
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Which graph represents y=x²-b.
where b is a positive real number?
J
K
L
M
N
Answers
According to the question,M is a positive real number.
What is the positive ?
The positive is having an optimistic outlook on life. It means looking on the bright side of things, maintaining a positive attitude, and having hope for the future. Having a positive attitude can help you to stay motivated and focused, even when things get tough. It can also help you to build strong relationships with others and make the most of opportunities. Being positive can lead to greater success and improved well-being.It can also help you to build strong relationships with others and make the most of opportunities. Being positive can lead to greater success and improved well-being.
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2. For electric circuit shown in Figure find currents in each resistor.
Answers
The current flowing in the 2Ω and 1Ω is 1.14 A and the current flowing in the 3Ω and 4Ω is 0.286 A.
What is the current flowing in each resistor?The value of the current in each resistor is calculated by applying Kirchoff voltage law as follows;
The total voltage in loop 1 is calculated as;
2 + 4 - I₁R₁ - (I₁ - I₂)R₂ - I₁R₃ = 0
6 - 2I₁ - 3(I₁ - I₂) - 1₁ = 0
The current flowing in loop 2 is calculated as;
I = V/R
I₂ = ( 6 V - 4 V ) / (3 + 4)
I₂ = 0.286 A
The value of the current flowing in loop 1 is calculated as;
6 - 2I₁ - 3(I₁ - I₂) - 1₁ = 0
6 - 2I₁ - 3(I₁ - 0.286) - 1₁ = 0
6 - 3I₁ - 3₁ + 0.858 = 0
-6I₁ = -6.858
I₁ = 6.858 / 6
I₁ = 1.14 A
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1. At t=0s, a particle moving in the x-y plane with constant acceleration has a velocity ofv; = (3î-2)) m/s, and is at the origin. At t=3s, the particle's velocity is f = (91+7j) m/s. Find (a)the acceleration of the particle (b) Its coordinates at t=3s
Answers
Answer:
the particle is at coordinates (18,15/2)
Explanation:
To find the acceleration of the particle, we can use the formula for velocity: v = v0 + at, where v0 is the initial velocity, a is the acceleration, and t is the time. Since we know the initial and final velocities, as well as the time interval, we can solve for the acceleration:
a = (v - v0)/t = [(9i + 7j) - (3i - 2j)]/3 = (6i + 9j)/3 = 2i + 3j
So the acceleration of the particle is a = 2i + 3j m/s².
To find the coordinates of the particle at t=3s, we can use the formula for position: r = r0 + v0t + 1/2at², where r0 is the initial position. Since the particle starts at the origin, r0 = 0. Plugging in the values we have:
r = 0 + (3i - 2j)(3) + 1/2(2i + 3j)(3)² = 9i - 6j + 9i + 27/2 j = 18i + 15/2 j
We can use the kinematic equations of motion to solve this problem.
Let the acceleration of the particle be a = axî + ayj.
(a) Using the equation of motion v = u + at, where u is the initial velocity:
f = v = u + at
Substituting the given values, we get:
(91+7j) = (3î-2j) + a(3î + 3j)
Equating the real and imaginary parts, we get:
91 = 3a + 3a (coefficients of î are equated)
7 = -2a + 3a (coefficients of j are equated)
Solving these equations simultaneously, we get:
a = î(23/6) + j(1/2)
So the acceleration of the particle is a = (23/6)î + (1/2)j.
(b) Using the equation of motion s = ut + (1/2)at^2, where s is the displacement and u is the initial velocity:
At t = 3s, the displacement of the particle is:
s = ut + (1/2)at^2
Substituting the given values, we get:
s = (3î-2j)(3) + (1/2)(23/6)î(3)^2 + (1/2)(1/2)j(3)^2
Simplifying, we get:
s = 9î + (17/2)j
So the coordinates of the particle at t=3s are (9, 17/2).
Example 2 (5 points) Researchers at a university want to know if higher levels of nitrogen in fertilizer will increase the production of tomatoes per plant. Twenty plants are given normal levels of nitrogen and twenty other plants are given ten percent higher levels throughout the growing season. The plants receive the same levels of sunlight, water and are planted in the same soil on one farm. At the end of the experiment the average number of tomatoes produced is the same for each group. The scientists repeat the experiment on two additional farms further south that season. The researchers conclude that increasing nitrogen levels by 10% in tomatoes is not beneficial. Would this be a well-designed reliable experiment? Support your decision with at least three reasons.
Answers
The experiment was well designed.
What is an experiment?An experiment is used to determine cause and effect relationships. We know that in this case, the research is aimed at being able to obtain the relationship that exists between the amount of nitrogen in the soil and the production of tomatoes per plant.
As we could see, the experiment includes a control that serves as a baseline for determining the validity of the results. Further more, the sunlight, water and soil were held constant. The experiment was even repeated further south to verify the results.
Based on a careful review of the experiment, the experiment was well designed.
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A firetruck drive 3 miles to the east and 1.2 miles to the west what is the displacement of the firetruck
Answers
The damage done by a projectile on impact is correlated with
its kinetic energy. Calculate and compare the kinetic energies of
these three projectiles:
a) a 10.0-kg stone at 30.0 m/s
b) a 100.0-g baseball at 60.0 m/s
c) a 20.0-g bullet at 300. m/s
Answers
A. The kinetic energy of the stone is 4500 J
B. The kinetic energy of the baseball is 180 J
C. The kinetic energy of the bullet is 900 J
A. Determination of the kinetic energy of the stoneMass (m) = 10 KgVelocity (v) = 30 m/sKinetic energy (KE) =?KE = ½mv²
KE = ½ × 10 × 30²
KE = 5 × 900
KE = 4500 J
B. Determination of the kinetic energy of the baseball Mass (m) = 100 g = 100 / 1000 = 0.1 KgVelocity (v) = 60 m/sKinetic energy (KE) =?KE = ½mv²
KE = ½ × 0.1 × 60²
KE = 0.05 × 3600
KE = 180 J
C. Determination of the kinetic energy of the bullet Mass (m) = 20 g = 20 / 1000 = 0.02 KgVelocity (v) = 300 m/sKinetic energy (KE) =?KE = ½mv²
KE = ½ × 0.02 × 300²
KE = 0.01 × 90000
KE = 900 J
SUMMARYKinetic energy of stone = 4500 JKinetic energy of baseball = 180 JKinetic energy of bullet = 900 JFrom the above, we see clearly that the stone has the highest kinetic energy followed by the bullet and then the baseball.
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Will give brainliest if correct
Please help
Answers
Answer:
85.45
Divide 4,700/55
So C.
Answer:
C.85
Explanation:
Use the equation:
v= fλ ( v=wave speed, f= frequency, λ= wavelength)
4700= 55×λ
λ=4700÷55 =85.45 =85(approximately)
Pls help me mark Brainliest here the answer choices
4.0N
8.0N
12.0N
16.0N
20.0N
Answers
Answer:
20.0N
Becuase It's the largest
Answer:
20.0
Explanation:
It's the biggest number
Create an Energy Concept Map that has all the key terms from the Energy unit. The words should connect with lines, and explanation of why the connection is there should be written on the line.
Answers
Energy conservation is the principle that energy is neither created nor destroyed, but can only be converted or transferred. It involves using energy-efficient appliances and transitioning to renewable energy sources to reduce consumption and environmental impact.
Energy conservation refers to the principle that energy cannot be created or destroyed; it can only be converted from one form to another or transferred between systems. This principle is based on the law of conservation of energy, also known as the first law of thermodynamics. In other words, the total amount of energy in a closed system remains constant over time.
One example of energy conservation is the use of energy-efficient appliances in households. By using appliances that are designed to minimize energy waste, such as energy-saving light bulbs, efficient refrigerators, or insulated windows, individuals can reduce their energy consumption and lower their electricity bills. These appliances are designed to convert electrical energy into useful forms, such as light or heat, with minimal energy losses.
Additionally, energy conservation plays a crucial role in sustainable practices and environmental preservation. For instance, reducing reliance on non-renewable energy sources like fossil fuels and transitioning to renewable energy sources such as solar or wind power helps conserve natural resources and reduces greenhouse gas emissions.
In summary, energy conservation is the principle that states energy cannot be created or destroyed but can only be converted or transferred between different forms. By adopting energy-efficient practices and utilizing renewable energy sources, individuals and society can contribute to conserving energy and mitigating environmental impact.
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The question probable may be:
Explain the concept of energy conservation and provide an example of how it applies in real-life situations.
What is the intensity level of a sound that is loud enough to rupture a human eardrum at 160 dB?
Answers
Answer:
A sudden very loud noise can cause an eardrum to tear or rupture. The noise intensity to rupture an eardrum would have to be very loud, usually 165 decibels or more.
Explanation:
b) A ball is kicked by a footballer. The average force on the ball and the impact last for time interval 0.25 s. Calculate the cha momentum and also state the direction of change in more (Ans: 60 kg m/s) b)
Answers
60 kg m/s is the answer because you gave it and I thought you are telling ruth also you are a big questioner and also you should check with your doctor and go out and go touch the grass.
What does it mean for a chemical equation to be balanced?
Answers
Answer:
The number of each type of atom is the same for both the reactants and products.I hope this helps
As a laudably skeptical physics student, you want to test Coulomb's law. For this purpose, you set up a measurement in which a proton and an electron are situated 885 nm from each other and you study the forces that the particles exert on each other. As expected, the predictions of Coulomb's law are well confirmed. Therefore, you find the forces are __________.
Answers
Answer:
F = 2.6 x 10⁻²² N
Explanation:
According to the Coulomb's Law, the force of attraction or repulsion between two charges is directly proportional to the product of the magnitudes of both the charges and inversely proportional to the square of the distance between them. The formula for the force is given as follows:
F = k q₁ q₂/r²
where,
F = Force of Attraction or Repulsion = ?
q₁ = magnitude of first charge = charge on electron = 1.6 x 10⁻¹⁹ C
q₂ = magnitude of second charge = charge on proton = 1.6 x 10⁻¹⁹ C
k = Coulomb's Constant = 9 x 10⁰ N m²/C²
r = distance between the charges = 885 nm = 8.85 x 10⁻⁷ m
Therefore,
F = (9 x 10⁹ N.m²/C²)(1.6 x 10⁻¹⁹ C)(1.6 x 10⁻¹⁹ C)/(8.85 x 10⁻⁷ m)²
F = 2.6 x 10⁻²² N
Which two cosmologist hypothesized why the planets sometimes appear to move backward in the sky?
Answers
Answer:
Greek astronomer PtolemyGreek astronomer Apollonius of PergaExplanation:
This phenomena is referred to as the apparent retrograde motion.
Which change to this process would shift the equilibrium to produce the maximum possible amount of H20?
2H2 + 02 = 2H20 + energy
•A. Increasing the temperature
• B. Removing the Oz as it forms
•C. Decreasing the pressure
• D. Removing the H20 as it forms
Answers
Removing the H₂0 as it forms would shift the equilibrium to produce the most H₂0 possible. This is due to the reaction producing more water to replace the water that has been removed.
In chemistry, equilibrium refers to a state where the rate of the forward reaction is equal to the rate of the reverse reaction, resulting in no net change in the concentrations of the reactants and products. Equilibrium is an important concept in many chemical reactions, including acid-base reactions, redox reactions, and complex formation reactions.
Le Chatelier's principle can be used to predict how changes in conditions such as temperature, pressure, and concentration can affect the position of the equilibrium. For example, increasing the concentration of a reactant will shift the equilibrium towards the products, while decreasing the concentration of a reactant will shift the equilibrium towards the reactants.
In some cases, equilibrium can be used to achieve a desired product concentration. For example, the Haber process is used to produce ammonia by reacting nitrogen and hydrogen gases at high pressure and temperature. By controlling the reaction conditions, the equilibrium can be shifted to produce a high yield of ammonia.
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Bartender slides a beer mug at 1.1 m/s towards a customer at the end of the bar which is 1.8 m tall. The customer makes a grab for the mug and misses and mug sails at the end of the bar. a) How far away from the end of the bar does the mug hit the floor
Answers
Answer:
Δx = 0.7 m
Explanation:
Once the mug is moving in the horizontal direction, it keeps moving at the same speed of 1.1 m/s, due to no other force acts on it in this direction.Since the horizontal and vertical movements are independent each other (due to they are mutually perpendicular), in the vertical direction, the initial speed is just zero.In the vertical direction, the mug is accelerated by the force of gravity at all times, with a constant value of 9.8 m/s2, aimed downward.So, we can use the following kinematic equation in order to get the time passed from the instant that the mug left the bar, until it hit the floor, as follows:\(\Delta y = \frac{1}{2} * g* t^{2} = (1)\)where Δy = 0-1.8m = -1.8m, g= -9.8m/s2.Replacing these values in (1) and solving for t, we get:\(t = \sqrt{\frac{2*1.8m}{ 9.8m/s2} } = 0.6 s (2)\)
Now, since the mug obviously finishes its horizontal trip at this same time (hitting ground), we can find the horizontal distance traveled, just applying the definition of average speed, as follows:\(\Delta x = v_{o} * t = 1.1 m/s* 0.6 s = 0.7 m (3)\)
when you charge a balloon by rubbing it on your hair this is an example of what method of charging; what happens when you bring the balloon near your hair after rubbing it; static electricity; balloons and static electricity answers; what happens when you touch a metal doorknob after rubbing your shoes on the carpet?; balloon and paper experiment explanation; if you rub a glass rod with a piece of silk, the rod becomes positively charged this means that; why does the balloon stick to the wall
Answers
The balloon sticks to wall due to electrostatic force
What is electrostatic force?
Electrostatic forces are attractive or repulsive forces between particles that are caused by their electric charges. This force is also called the Coulomb force or Coulomb interaction and is so named for French physicist Charles-Augustin de Coulomb, who described the force in 1785.
The electrostatic force acts over a distance of about one-tenth the diameter of an atomic nucleus or 10-16 m. Like charges repel one another, while unlike charges attract one another. For example, two positively charged protons repel each other as do two cations, two negatively charged electrons, or two anions. Protons and electrons are attracted to each other and so are cation and anions
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A student bought a 1.55-ounce chocolate bar and left it in
a car on a hot day.
How many ounces of chocolate are in the melted bar?
A. Exactly 1.55 ounces
B. At least 1.55 ounces
C. An unknown number of ounces
D. Less than 1.55 ounces
Answers
Answer:
a
Explanation:
A student bought a 1.55-ounce chocolate bar and left it in a car on a hot day. Exactly 1.55 ounces of chocolate are in the melted bar. Hence, option (A) is correct.
What is mass?In physics, mass is a quantitative measurement of inertia, a basic characteristic of all matter. It essentially refers to a body of matter's resistance to changing its speed or location in response to the application of a force.
The change caused by an applied force is smaller the more mass a body has. The kilogram serves as the unit of mass in the International System of Units (SI).
As mass does not depends on the state of the object, exactly same mass of chocolate are in the melted bar that it was in chocolate bar. So, 1.55 ounces of chocolate are in the melted bar. Hence, option (A) is correct.
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A pulley consists of a large disk of radius R and a small disk of radius r that are welded together and mounted on a horizontal frictionless axle through their common centers. The moment of inertia of this pulley is I. A box containing a turkey of mass M is suspended from a rope wound around the large disk; a box containing a pumpkin of mass m is suspended from a rope wound around the small disk. The ropes do not slip on the disks. The system is released from rest and the turkey begins to descend, while the pumpkin is being lifted up.
Use forces and torques to derive an expression for the angular acceleration of the pulley, in terms of system parameters
Answers
The angular acceleration of the pulley is given by the expression α = (MgR - mgr) / I.
The forces acting on the system are the gravitational forces on the turkey and the pumpkin, which are Mg and mg, respectively. T
These forces create torques on the pulley, with the torque on the large disk being MgR and the torque on the small disk being -mgr. The negative sign on the torque of the small disk indicates that it is acting in the opposite direction of the torque on the large disk.
The sum of these torques is equal to the moment of inertia of the pulley times its angular acceleration, which can be written as:
MgR - mgr = Iα
Solving for the angular acceleration, α, we get:
α = (MgR - mgr) / I
This is the expression for the angular acceleration of the pulley in terms of the system parameters. It shows that the angular acceleration depends on the masses of the turkey and the pumpkin, the radii of the large and small disks, and the moment of inertia of the pulley.
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