a 70-kg stunt artist rides in a rocket sled which slides along a flat inclined surface. at an instant when the sled's acceleration has a horizontal component of 6.0 m/s2 and a downward component of 2.8 m/s2, what is the magnitude of the force on the rider by the sled?
Answers
The magnitude of the force on the rider by the sled is approximately 464 Newtons (N).
The magnitude of the force on the rider can be calculated using the Pythagorean theorem, as the force is the vector sum of the horizontal and vertical components of acceleration:
Magnitude of the force (F) = √(Fₓ² + Fᵧ²)
Where:
Fₓ = m * aₓ (horizontal component of force)
Fᵧ = m * aᵧ (vertical component of force)
Calculating the horizontal and vertical components of force:
Fₓ = (70 kg) * (6.0 m/s²) = 420 N
Fᵧ = (70 kg) * (2.8 m/s²) = 196 N
Now, we can calculate the magnitude of the force:
Magnitude of the force (F) = √((420 N)² + (196 N)²)
= √(176,400 N² + 38,416 N²)
= √214,816 N²
≈ 464 N
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Related Questions
One earth day equals 24 hours.
Answers
Answer:
Correct, is there another part to the question?
Answer:
claro u es iq
Explanation:
2. The Burj Khalifa tower has an elevator that can go up to 100 m/s. If the tower is 828 meters tall, how
long does it take the elevator to go from the bottom to the top?
Answers
Answer: one minute
Explanation:
The Burj Khalifa elevator speed is 10 meters per second, making the elevators among the fastest in the world. The Burj Khalifa elevator time to reach the observation deck on the 124th floor is only one minute.
HELP ME I AM EXTREMELY DESPERATE!!!!!!
Answers
Answer: B is the correct answer because they are both showing a constant speed
Explanation:
Answer: C is the correct answer
Explanation:
the velocity of light in the core of a step index fiber is 2.01*10^8 m/s, and the critical angle at the core-cladding interface is 80degrees. determine the numerical aperture and the acceptance angle for the fiber in air. assume that the velocity of light in vacuum is 3*10^8 m/s.
Answers
Step index fibres have refractive indices of 1.45 for the cladding and 1.46 for the core. The pulse dispersion caused by the numerical aperture alone is measured in ns/km.
Why should the cladding's refractive index be lower than the core's?For TIR to occur, the core should have a higher refractive index than the cladding since TIR only occurs when light moves from a denser to a rarer medium.
What distinguishes the optical fiber's core from its cladding?The part of the fibre that carries light is called the core. The core is encircled by the cladding. A substance with a slightly lower index of refraction than the core makes up the cladding. Whole internal reflection takes place at the core-cladding boundary as a result of this discrepancy in the indices.
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describe the motions of a baseball thrown from a height of 10 ft versus a ball that was just dropped from a height of 10 ft at the same time.
Answers
When comparing the motions of a baseball thrown from a height of 10 ft and a ball that is simply dropped from the same height, there are distinct differences.
The thrown baseball exhibits a combination of vertical and horizontal motion. It follows a curved path due to the initial throwing velocity and the force of gravity, resulting in a parabolic trajectory. In contrast, the dropped ball experiences only vertical motion, falling straight down toward the ground in a vertical line. While both objects are affected by gravity, the thrown baseball's additional horizontal velocity allows it to cover a longer distance and follow a more complex path compared to the vertically descending dropped the ball.
Therefore, the thrown baseball exhibits both vertical and horizontal motion, following a curved trajectory due to the combination of the initial throwing velocity and the force of gravity. The dropped ball, on the other hand, experiences only vertical motion, falling straight down toward the ground along a vertical line.
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A human hair is approximately 50 µm in diameter. Express this diameter in meters.
Answers
Answer:
0.00005m
Explanation:
To convert from micrometers to meters, divide your figure by 1000000 .
:)
which energies change as the bobsled moves down the slope and hits the spring? select all that apply.
Answers
In our bobsleds, the bobsled's potential energy on the ramp was converted into kinetic energy as it descended the ramp, and then thermal energy as friction as it came to a stop.
What does science mean by a potential energy?The term "potential energy" describes the energy that is held within an object due to the object's position, state, and arrangement. It is one of the two essential types of energy; the other is energy. The object's position, status, or configuration changes, releasing the stored energy.
Describe a potential energy example.Due to its position, an object might accumulate energy. If a demolition machine's heavy ball is held in an elevated position, for instance, it can store energy. Potential energy is the name for this kinetic energy that is held in a position. As a result of its location, a drawn bow can also store energy.
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What is Anatomy & Physiology in 5 words?
Answers
Answer:
Anatomy is the study of the structure and relationship between body parts.
Physiology is the study of the function of body parts and the body as a whole.
Explanation:
Which statement correctly defines pasteurization?
Pasteurization is the process by which broth is used to grow thousands of bacteria.
Pasteurization is the process by which liquids are cooled to a very low temperature.
Pasteurization is the process by which broth is added to soups and other foods.
Pasteurization is the process by which liquids are heated to kill bacteria that may be present.
Answers
Pasteurization is the process by which liquids are heated to kill bacteria that may be present.
A student makes the following claim,
"Scalar and vector quantities are the same thing, so they can be used interchangeably."
Explain the error in the student's claim. Provide an example of each quantity to support your answer.
Please answer quickly!
Answers
Answer:
Explanation:
A scalar quantity is a physical quantity that has only one characteristic - a numerical value.
The scalar value can be positive or negative.
Examples of scalar quantities: temperature, mass, volume, time, density.
A vector quantity is a physical quantity that has two characteristics:
1) a numerical value that is always positive (vector modulus);
2) direction.
Examples of vector physical quantities: speed, acceleration, force.
what is the longest wavelength of electromagnetic radiation that will ejectphotoelectrons from sodium metal for which the work function is 2.28 ev?
Answers
The longest wavelength of electromagnetic radiation that will eject photo-electron from the sodium metal is 544 nm.
What is electromagnetic radiation ?Electromagnetic radiation consists of waves of electromagnetic field, which propagates through space and carries momentum and electromagnetic radiant energy.
Minimum energy required to knock out an electron from the surface of the metal is called the work function.
As we know that, W= hc/λ
h -- Planck's constant ; c -- Speed of light
and λ is Longest wavelength
Given, work function of sodium metal is 2.28 eV
As 1 eV = 1.6021 * 10^-19 J
=2.28 * 1.6021 * 10^-19
= 3.65 *10^-19 J
W= hc/ λ
3.65 *10^-19 = 6.62 *10^-34 * 3 *10^8/ λ
λ = 5.44 * 10 ^-7m
λ =544 nm
The longest wavelength of electromagnetic radiation that will eject photo-electron from the sodium metal is 544 nm.
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In what do electromagnetic waves cause disturbances when they transfer
energy?
A. Electric fields only
O B. Both electric and magnetic fields
C. Neither electric nor magnetic fields
O D. Magnetic fields only
Answers
A 58kg soccer player, moving at 3. 75m/s North hits another 56kg moving at 4. 90m/s collide West and
stick together. What is their speed and direction after collision
Answers
The final speed of both players is 4.314 m/s
Both players will stick together and moves in the northwest direction due to the impact,
The mass of the first soccer player = 58 kg
The velocity of the first soccer player = 3.75 m/s
The mass of the second player = 56 kg
The velocity of the second player = 4.9 m/s
The final speed of both players can be found using the formula,
m₁u₁ + m₂u₂ = (m₁ + m₂)v
where m₁,m₂ is the mass of the first and second player
u₁,u₂ is the initial velocity of the first and second player
v is the final velocity of both players
Let us substitute the known values in the above equation, we get
58 x 3.75 + 56 x 4.9 = ( 58 + 56) v
217.5 + 274.4 = 114 v
491.9 = 114 v
491.9 / 114 = v
v = 4.314 m/s
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If an object starts at rest, what is necessary to make it start moving?
Answers
It will need a force acceleration
10 Psychological Tricks That Can Make Your Life Much Easier
1. Look into someone’s eyes when you get a dissatisfactory answer: Sometimes we don’t like the answer to a question that we receive and sometimes we don’t understand it. Instead of repeating the question or asking another, look into the eyes of the person. This will make the person feel under pressure or cornered, and this will force them to further elaborate their thoughts.
2. Stay calm when someone raises their voice to you: Make a strong effort to remain calm. When a loudmouth acts out it’s usually in anger, and our behaviors can sometimes unintentionally provoke that. The feelings of anger usually quickly subside and guilt will set in and usually this person is first to ask for forgiveness.
3. Sit close to the aggressor to avoid attack: If you’re heading into a meeting and you know you’ll be in the room with an aggressive person, you know the discussion may become heated, or you may be subjected to negative criticism, make a point to sit next to that person. You may feel uncomfortable and awkward, but you won’t be the only one. Close proximity is known to make people uncomfortable which will lessen the level of aggression they plan to exercise.
4. Remember everyone’s names if you want to be popular: If you want to be popular with your peers and colleagues, make it a habit to start calling people by their first names when speaking with them. A person feels instantaneously special when you call him or her by their first name.
5. Write down your thoughts when you feel stressed or anxious: We all feel some level of mental stress or anxiety at some point. Write down your thoughts in a journal and then close it up. Believe it or not, you’ll be able to focus on your work more easily because you have now shared your thoughts with someone. When you share them, you will then feel the burden on your mind reduced.
6. Give yourself fewer choices when you can’t make the decision:Some people believe that it’s better to have more choices and more information and actually, they prefer to have more. However, it is actually paralyzing to have too many. There is evidence that shows that having four options at a time is the maximum number we can consider and still make a choice. In order to be an effective decision maker, you should only give yourself a few options at a time. This will allow you time to consider each one while giving you enough space between looking at a new set of options.
7. Right posture can boost confidence: This psychological trick applies to both work and pleasure. It can drastically improve your dating life and help you move up the ladder at work. How can you become confident do you ask? The best way to do this is through your posture. If you allow yourself to take up more space, you’re more likely to feel more confident. This is referred to power language.
8. Surefire way to win in ‘rock, paper, scissors’: This one is definitely intriguing. When you’re about to play this famous game, ask your opponent a random question right before. This typically will throw your confused opponent off and more often than not they will throw up ‘scissors’.
9. Make people feel needed when you ask for help: If you need someone’s help start off with the phrase, ‘I need your help…’ People like to feel needed and they hate feeling guilty. By starting off the conversation with that phrase, you’re more likely to receive the help you need.
10. Warm your hands before shaking hands with others:Did you know that cold hands are linked to distrust? When you’re about to touch someone or shake their hand, make sure that your hands are warm. Warm hands promote a friendly atmosphere.
and those are the ten physiology tricks.
Answers
Answer: Cool! Thanks!
This is for physical science i don't understand (please help) i need an answer by 11:40
Answers
Answer: 1.4mi/hr²
Explanation:
Blank 1: We know that acceleration is the change in velocity/change in time
Using this, we know that the acceleration will be: (50-15)/25 = 1.4
Blank 2: mi/hr²
The image shows positivle and negative charged particles bouncing around. Which state of matter is most likely represented in the image?
Answers
Answer:
Gas Solid Liquid Plasma
Explanation:
Answer:
plasma
Explanation:
plasma has charged particles and ions and electrons floating around
Who hurt Odysseus the most on his journey home?
Answers
Answer:
Poseidon
Explanation:
Poseidon was justifiably not happy to learn that his son had suffered in this way, which made him hate Odysseus even more. After Homer invoked the muses at the beginning of the Odyssey, the poet mentioned that Poseidon had a grudge against Odysseus, which made his journey home to Ithaca difficult.
Which two types of electromagnetic waves have higher frequencies than the waves that make up ultraviolet light?
o radio waves and infrared light
O visible light and X-rays
O microwaves and gamma rays
gamma rays and X-rays
Answers
Answer:
Gamma rays and x rays
Explanation: just took the test
Gamma rays and X-rays have higher frequencies than the waves that make up ultraviolet light. Hence option D is correct.
What is Electromagnetic Spectrum ?Electromagnetic spectrum is nothing but the range of wavelengths or frequencies on which electromagnetic radiation extend. it is whole distribution of electromagnetic waves according to frequency or wavelength. Electromagnetic wave is nothing but a photon which carries energy. Photon wave has frequency, wavelength as well as amplitude.
Electromagnetic spectrum is show in figure.
There is inverse relation between wavelength and frequency as υ = c/λ
where υ is the frequency, λ is the wavelength and c is the speed of light.
as wavelength increases, frequency decreases vice verse.
In this figure we can see that radio waves has highest wavelength hence it has lowest frequency. X ray and gamma rays has lowest wavelength hence it has highest frequency.
Hence option D is correct.
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A 0.50-kilogram frog is at rest on a rock next to a pond. The frog leaps pushing off of the rock with an acceleration of 5.0 m/s2. What is the magnitude of the net force exerted on the frog as it leaps? a)2.5 N b)1.5 N c)1.0 N d)2.0 N
Answers
Given that,
Mass of a frog, m = 0.5 kg
The frog leaps pushing off of the rock with an acceleration of 5.0 m/s².
To find,
The magnitude of the net force exerted on the frog as it leaps.
Solution,
Let the net force exerted on the frog is given by the formula as follows :
F = ma
Putting the values of m and a to find F as follows :
F = 0.5 kg × 5 m/s²
F = 2.5 N
So, the magnitude of net force is 2.5 N.
The magnitude of the net force exerted on the frog as it leaps is 2.5 Newtons.
Hence, Option a) 2.5N is the correct answer.
Given the data in the question;
Mass of frog; \(m = 0.5kg\)Acceleration; \(a = 5.0m/s^2\)Force Exerted; \(F = ?\)
To determine the magnitude of the net force exerted on the frog as it leaps, we the expression from the Newton's Second law of motion:
\(F = m * a\)
Where m is mass and a is acceleration
We substitute our given values into the equation
\(F = 0.5kg * 5.0m/s^2\\\\F = 2.5kgm/s^2\\\\F= 2.5N\)
The magnitude of the net force exerted on the frog as it leaps is 2.5 Newtons.
Hence, Option a) 2.5N is the correct answer.
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A cyclist and a bike have a combined mass of 99kg. show that the combined weight is 990n
Answers
Explanation:
9.80665 N/kg is the force applied by Earth's gravity on a 1 kg of mass (that is then the weight of 1kg mass). the acceleration due to this gravity is usually correspondingly defined as 9.81m/s².
now we have 99 kg.
that means we have to multiply 9.81 by 99
99×9.81 = 971.19 N
if we just roughly round the weight of 1 kg from 9.81 to 10 N, we get then the proposed 99×10 = 990 N result.
but as you can see, this is not very precise.
if a person visits an exercise facility, buys a new piece of fitness/sporting equipment, or just starts planning to be active, which of the five stages of change for physical activity are they at?
Answers
The person is in the stage of planning due to its action of planning to be active. Option a is correct choice.
The person is in the planning stage among the five stages of change for physical activity because the person just started planning to be active not yet started the activity. If a person is in the state of looking thoughtfully at something for a very long time then it is said to be Contemplation.
While on the other hand, if a person is in a stage in which there is no intention to change behavior in the foreseeable future then it is called precontemplation so we can conclude that the person is in the stage of planning due to its action of planning to be active.
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--The complete question is, If a person visits an exercise facility, buys a new piece of fitness/sporting equipment, or just starts planning to be active, which of the five stages of change for physical activity are they at?
a. Planning
b. Maintenance
c. Precontemplation
d. Contemplation--
rna polymerase will bind tightly to the trp promoter when: a. tryptophanispresent b. tryptophan is absent
Answers
RNA polymerase will bind tightly to the trp promoter when b. tryptophan is absent.
The trp operon is a system in bacteria that regulates the production of tryptophan-related enzymes. When tryptophan levels are low, the cell needs to synthesize more tryptophan, and RNA polymerase binds tightly to the trp promoter to initiate transcription of the genes involved in tryptophan synthesis. On the other hand, when tryptophan is present in sufficient quantities, it binds to the trp repressor protein, causing a conformational change that allows the repressor to bind to the trp operator, blocking the access of RNA polymerase to the trp promoter.
This negative feedback mechanism ensures that the cell conserves energy and resources by only producing tryptophan-related enzymes when they are needed. In summary, RNA polymerase binds tightly to the trp promoter when tryptophan is absent, ensuring efficient regulation of tryptophan synthesis in response to cellular needs.
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Dust, accumulated at the time of the formation of the solar system is sometimes preserved in asteroids, meteoroids, and meteorites. what are these pockets of early solar system materials called
Answers
The dust, accumulated at the time of the formation of the solar system that are preserved in asteroids, meteoroids, and meteorites are called chondrules.
What is the solar system?The solar system is composed of the earth and the planets. The solar system was formed millions of years ago.
The dust, accumulated at the time of the formation of the solar system that are preserved in asteroids, meteoroids, and meteorites are called chondrules.
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what is the principle of thermometer
Answers
A thermometer is a device that is used for measuring the degree of hotness or coldness of the given object. It consists of a glass tube inside which there is a liquid known as mercury. When the bulb of the thermometer is dipped in the given solution or object, the mercury starts to expand. This expansion of mercury is read on the temperature. Depending on the reading, the temperature of the given object or solution can be determined. Therefore, the working principle of thermometer depends on the degree of hotness or coldness of the given solution or object.
Answer:
solid and liquid expands on heating.As the temperature rises mercury expands causing it to move upwards and depict the temperature.
A few panthers decide to roam around Castroville. They start in the valley then travel 150m [N]. 275m [S] and then 200 m [N].
a. Calculate the total distance covered by the pack.
b. What is the final position of the pack relative to where it started?
Answers
Despite their darkness, their lustrous dark fur coat can make them difficult, if not impossible, to spot. Panthers have small heads, powerful jaws, and emerald green eyes. Their hind legs are often larger and slightly longer than their front legs.
What are the characteristics of panther?The ability to remain undetected is one of the main ways that panthers differ from other big cats. Panthers hunt at night since they are nocturnal.
Therefore, They can blend in with their surroundings thanks to their dark fur, and their keen eyesight and nose make it easier for them to find their prey.
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if a girl carries 10kg bag
Answers
a violent, whirling wind that moves across the ground in a narrow path it is a tornado
True of false?
Answers
Which statement accurately describes electronic tools? Check all that apply
Answers
Answer:
Electronic tools provide more accurate data and this data is more efficient fast and easy to understand
Hope this helps you!!
How does Cisneros's decision to end the novel by having Esperanza say one day she will leave Mango Street so she can come back for the ones she left behind contribute to the story's impact?
Question 2 options:
It suggests a sense of pride that her neighborhood is as good as any, ending the story on a defensive note.
It creates a sense that she wants to forget about all of the pain and misery she witnessed while living there, ending the story with a tone of tragedy.
It emphasizes that she wants to be able to one day speak for those who cannot speak for themselves, ending the story with a sense of empowerment.
It hints that the women who doubted her talents should feel foolish, ending the story on a spiteful note.
Answers
The ending of the story contributes to the positive impact of the story of hope and empowerment.
What is a story's impact?A story's impact refers to the effect a story has on the reader of that story.
Stories can produce either negative or positive impact on readers.
In the Mango street, the lead character Esperanza says that one day she will leave Mango Street so she can come back for the ones she left behind.
This emphasizes that she wants to be able to one day speak for those who cannot speak for themselves, ending the story with a sense of empowerment.
Therefore, the ending of the story contributes to the positive impact of the story of hope and empowerment.
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Answer:
It emphasizes that she wants to be able to one day speak for those who cannot speak for themselves, ending the story with a sense of empowerment.
Explanation:
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