Andrew uses a 26. N horizontal force to push a 3.0 kg crate up a 2.5 m-high, 20.o , frictionless slope. What is the speed of the crate at the top of the slope (assuming it starts from rest)
Answers
The speed of the crate at the top of the slope is approximately 2.38 m/s.
The work done by the applied force is equal to the change in potential energy and kinetic energy of the crate.
Calculate the change in potential energy:
ΔPE = m * g * h
\(= 3.0 kg * 9.8 m/s^2 * 2.5 m \\= 73.5 J\)
Calculate the work done by the applied force:
Work = Force * Distance
\(= 26 N * 2.5 m \\= 65 J\)
According to the conservation of energy, the work done by the applied force is equal to the change in potential energy and the final kinetic energy:
Work = ΔPE + ΔKE
Rearranging the equation to solve for the final kinetic energy:
ΔKE = Work - ΔPE
\(= 65 J - 73.5 J \\= -8.5 J\)
Since the crate starts from rest, the initial kinetic energy is zero (KE_initial = 0 J). Therefore, the final kinetic energy (KE_final) is also equal to the kinetic energy at the top of the slope.
KE_final = -8.5 J
To find the speed (v) of the crate at the top of the slope, we can use the equation:
KE_final = \((1/2) * m * v^2\)
Substituting the known values:
\(-8.5 J = (1/2) * 3.0 kg * v^2\)
Solving for v:
\(v^2 = (-8.5 J) / ((1/2) * 3.0 kg) \\v^2 = -5.67 m^2/s^2\)
Since speed cannot be negative, we take the positive square root:
v = \(\sqrt{(-5.67 m^2/s^2)\) (ignoring the negative solution)
v ≈ 2.38 m/s
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Related Questions
Conversion of electromagnetic (EM) energy from the sun into other forms of energy occurs for (select all that apply) a. Biofuels (EM to chemical bonds during photosynthesis)
b. Hydroelectric power (EM to evaporation and precipitation of water)
c. Solar thermal power (EM to motion of exchange fluid)
d. Photovoltaic power (EM to electricity, the movement of particles)
e. Wind power (EM to air movements)
Answers
Conversion of electromagnetic (EM) energy from the sun into other forms of energy occurs for the following options:
a. Biofuels
c. Solar thermal power
e. Wind power (EM to air movements)
A- Biofuels: During photosynthesis, plants capture electromagnetic energy from the sun and convert it into chemical energy, stored in the bonds of organic molecules, such as glucose. This process allows for the conversion of EM energy to chemical energy in the form of biofuels.
c. Solar thermal power: Solar thermal power plants use mirrors or lenses to concentrate sunlight, which is then converted into heat energy. This thermal energy can be used to generate steam, which drives a turbine and produces mechanical energy.
e. Wind power: Wind turbines harness the kinetic energy of moving air, which is ultimately driven by the sun's uneven heating of the Earth's surface. The sun's energy heats the atmosphere, creating temperature and pressure gradients that result in wind currents.
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HELP WILL MARK BRAINLIEST!!
Answers
Answer:15
Explanation:
which of these correctly compares the masses of different objects in the universe?
Answers
In comparison to a galaxy and a planet, a star is heavier. an accurate comparison of the cosmological masses of various objects.
Do stars have more mass than planets and less mass than galaxies?A galaxy has a mass that is between that of a moon and that of a planet. A planet has more mass than a star, which has less mass than a galaxy. The stars need a lot of mass to maintain nuclear fusion, which requires resulted in the production of each.
What is the proper ranking of the universe's elements, from smallest to largest?Planets and stars, solar systems, galaxies, and the cosmos are some key concepts to keep in mind in the following order: smallest to largest. Each phrase is a part of the following.
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PLS HELP ME
I NEED HELP ASAP
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Answer:
In order to find average velocity we use the equation: \(avg = \frac{change \: in \: x}{change \: in \: time} \)She went from 4.0m to 16.0 m making her delta x = 12.0 m She did that in 4sHence 12/4 = 3 m/sa 50g sample decays to 6.25 g in 6hrs. what's the half life
Answers
Answer:
Nuclear half-life expresses the time required for half of a sample to
Explanation:
401.06
why is using dry nitrogren or argon a suitable environemtn for a grignard reaction
Answers
Using dry nitrogen or argon is a suitable environment for a Grignard reaction because these gases are inert and do not react with the reagents used in the reaction.
What is the Grignard reaction?
A Grignard reagent is an organometallic compound formed by reacting an organic halide with magnesium metal. A Grignard reaction is a chemical reaction that occurs between an organic halide (R-X) and a Grignard reagent (R'-MgX), forming a new carbon-carbon bond. This reaction is an essential tool in organic synthesis because it can be used to form a wide range of organic compounds.
Nitrogen or argon gas in Grignard reaction:
The reaction is highly sensitive to water, which can quickly destroy the Grignard reagent, and therefore the reaction must be performed under a dry atmosphere. Using dry nitrogen or argon is a suitable environment for a Grignard reaction because these gases are inert and do not react with the reagents used in the reaction. They help to maintain the dry atmosphere required for the reaction to take place without any unwanted side reactions. Additionally, these gases help to prevent the reaction from oxidizing, which can result in the production of unwanted byproducts.
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What would be the final temperature if you mixed a liter of 40C water with 2 liters of 20C water?
Answers
Answer:
I found
33 ∘ C
Explanation:
i hope this helps :)
Calculate V1 and V2 ( V = voltage )
Given that Vs = 16V, R1 = 330Ω, and R2 = 470Ω
Please do not answer if you don't know how to do this
Answers
Calculate V1 and V2 ( V = voltage )
Given that Vs = 16V, R1 = 330Ω, and R2 = 470Ω
Solution:Given that,
Vs = 16VR1 = 330ΩR2 = 470Ω.°.
V1&V2↷
Firstly, we'll find the Total resistance of the circuit=> 330Ω + 470Ω =800Ω
Now, we'll use the ohm's law to calculate the current flow in the circuitVˢ= IRᵀ
\(I= \frac{16}{800} = > \frac{1}{50}\)
= 1/50 Ampere
Now,
V1 = IR
\(v1 = \frac{1}{50} \times 330 = > 6.6 \: Volt\ \\ v2 = \frac{1}{50} \times 470 = > 9.4 \: Volt\)
______
Hope it helps
-------☆ﾟ.･｡ﾟᵴɒƙυᴚᴀ_ƨȶäᴎ❀
difference between the. density of a rock and diamond
Answers
Answer:
A rock is made from two or more minerals. A mineral might contain just one chemical element or more than one element. ...
The diamond is the Earth's hardest mineral. A diamond is so hard that it's possible to cut a diamond with another diamond
A square nonconducting plate, 2a on a side, has a total charge Q uniformly spread over its surface. Calculate the electric field vector E at distance z above the plate's center. Use the electric field at a distance z above the midpoint of a line of charge of length 2L as a shortcut when solving.
Answers
Answer:
E' = Qa/4πε[√(a² + z²)]³
Explanation:
Since the non-conducting plate is symmetric, a small charge element dq generates an electric field dE at a distance R from itself and a distance z above the center of the plate. Since the plate is symmetric, we only have the vertical component of the electric field acting at the center so dE' = dEcosθ where θ is the angle between R and the plate.
So, dE' = dEcosθ = dqcosθ/4πεR²
Let σ represent the surface charge density of the plate. So, for a small elemental area dA, dq = σdA.
Substituting this into dE' we have
dE' = σdAcosθ/4πεR²
Also cosθ = a/R where a is half the length of side of the plate of side length, 2a.
So, dE' = σdAa/4πεR³
Also R² = a² + z²
R = √(a² + z²)
So, dE' = σdAa/4πε[√(a² + z²)]³
Now, dA = dxdy
dE' = σadxdy/4πε[√(a² + z²)]³
So, the total electric field at z is obtain by integrating dE'
E' = ∫dE' = ∫σadxdy/4πε[√(a² + z²)]³ = σa∫dxdy/4πε[√(a² + z²)]³
We integrate dx and dy from -a to a.
So,
E' = σa[2a][2a]/4πε[√(a² + z²)]³
E' = σa³/πε[√(a² + z²)]³
Since the total chare Q = σA where A is the are of the plate. A = (2a)² = 4a²
Q = σA = 4σa²
σ = Q/4a²
substituting σ into E', we have
E' = (Q/4a²)a³/πε[√(a² + z²)]³
E' = Qa/4πε[√(a² + z²)]³
help!!!!!!!!!!!!!!!!!!!!
Answers
Answer:
Explanation:
For this one I'd say D. Placing data into tables, charts, and graphs is the easiest way for scientists to quickly sort their dat...
por qué existen diferentes tipos de estrellas
Answers
La masa de una estrella es uno de los factores principales que determina su tipo. Las estrellas pueden variar desde enanas rojas de masa baja hasta supergigantes de masa alta. La masa influye en la temperatura y la presión interna de la estrella, lo que a su vez afecta su brillo, color y ciclo de vida.
La temperatura de una estrella también es un factor importante en su clasificación. Las estrellas más calientes suelen ser de color azul o blanco, mientras que las más frías son de color rojo. La temperatura está relacionada con la cantidad de energía que una estrella emite y su espectro de radiación.
Además, la composición química de una estrella puede variar, lo que afecta su luminosidad y otros aspectos. Las estrellas están compuestas principalmente de hidrógeno y helio, pero también contienen trazas de otros elementos. La presencia de diferentes elementos influye en la reacción nuclear que ocurre en el núcleo de la estrella y, por lo tanto, en su brillo y evolución.
Las diferencias en masa, temperatura y composición química dan lugar a una amplia variedad de tipos de estrellas, como enanas rojas, estrellas de secuencia principal (como el Sol), gigantes rojas, supergigantes y estrellas de neutrones. Cada tipo de estrella tiene su propia vida y evolución, y contribuye a la diversidad y belleza del universo observado.
Different forces were applied to five balls, and each force was applied for the same amount of time. The data is in the table. A 4 column table with 3 rows. The first column is labeled Object with entries Ball A, Ball B, Ball C, Ball D. The second column is labeled Force in Newtons with entries 50 N, 60 N, 70 N, 80 N. The third column is labeled Time in seconds with entries 1. 25, 1. 25, 1. 25, 1. 25. The fourth column is labeled Impulse in Newtons times seconds with entries 62. 5, 75, 87. 5, 100. If the force on ball A doubles while the time remains the same, what happens to the impulse? It divides in half. It does not change. It doubles. It quadruples.
Answers
The magnitude of impulse on Ball A will become twice (doubles). Hence, option (c) is correct.
Impulse:
The effect of applied force acting for a very small interval of time is known as Impulse.
Given data:
The initial magnitude of the force on Ball A is, F = 50 N.
The time interval for the applied force on Ball A is, t = 1.25 s.
And the impulse at initial on ball A is, I = 62.5 N-s.
Now, if force on ball A doubles, which means new magnitude of force is,
F' = 2F
F' = 2 × 50
F' = 100 N
For same time interval, the new impulse on Ball A is given as,
I' = F' × t
Solving as,
I' = 100 × 1.25
I' = 125 N-s
Taking the ratio of both the impulses as,
I' / I = 125/62.5
I' = 2 I
Thus, we can conclude that the magnitude of impulse on Ball A will become twice (doubles). Hence, option (c) is correct.
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Answer:
C. It doubles.
Explanation:
hope this helps:)
Can someone please help me with science.
Answers
Answer:
I think it is D or A
Explanation:
I have not done this in a long time, so sorry if wrong.
Can an object with constant also be accelerating?
Answers
Answer:The velocity vector is constant in magnitude but changing in direction. Because the speed is constant for such a motion, many students have the misconception that there is no acceleration. ... For this reason, it can be safely concluded that an object moving in a circle at constant speed is indeed accelerating.
Explanation:
3. A force of 380 N is applied to a 38 kg object over a distance of 2.5 meters. What is the speedof the object after it accelerates?
Answers
Given,
Force, F = 380 N
Mass, M = 38 kg
Distance, d = 2.5 m
The work done on the body is equal to the final kinetic energy.
\(F\times d=\frac{1}{2}mv^2\)Put the given values in the formula,
\(\begin{gathered} 380\text{ N}\times2.5\text{ m = }\frac{1}{2}\times38kg\times v^2 \\ v^2=\frac{950\times2}{38} \\ v^2=50 \\ v=\sqrt[]{50} \end{gathered}\)Thus, the speed of the object after it accelerates is
\(v=7.07\text{ m/s}\)Did Einstein say compound interest is the 8th wonder of the world?
Answers
Yes, it is commonly attributed to Albert Einstein that he said, "Compound interest is the eighth wonder of the world. He who understands it, earns it... he who doesn't... pays it."
However, there is no direct evidence that he actually said this, and some sources suggest that the quote may have been misattributed to him. Nonetheless, the quote has become popular in the world of finance and investing as a way to emphasize the power of compound interest in generating wealth over time.
Compound interest refers to the process of earning interest on both the initial amount of an investment and on the accumulated interest. This means that as time goes on, the amount of interest earned can grow exponentially, leading to significant gains in the value of an investment over the long term. This is why compound interest is often referred to as the "eighth wonder of the world" as it can have a dramatic impact on financial outcomes.
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UNIT (5) Momentum 5.D Change in Momentum DATE NAME Scenario A 10 kg box, initially at rest, moves along a smooth horizontal surface. A horizontal force is applied to the box. The magnitude of the force changes as a function of time as shouwn. Take the positive direction to be to the right. Tme (econd Data Analysis Rank the magnitude of the impulse applied to the box by the force during each 2-second interval indicated below: PART A: A. 0-2 seconds B. 24 seconds C. 4-6 seconds D.6-8 seconds E.8-10 seconds Smallest impulse Greatest impulse Write a few sentences justifying your reasoning. Use words like speed, velocity, acceleration, time, force, momentum, and impulse. PART B: Using Representations PART C: Re-represent the data given in the force vs. time graph in Part A as a momentum vs. time graph for the same 10 kg box. Step 1: Identify the equation that relates force and momentum. Step 2: How can momentum be found from a force vs. time graph? Step 3: Plot the momentum as a function of time. (Make a table if you need to.) 10Time (s) Momentum (kgm/s) Forte Newtons) 5.D Change in Momentum Quantitative Analysis Use the graph above to calculate the velocity of the box after 10 seconds. For each line in the calculation, explain what was done mathematically. The first line is done for you. Ap = mai The change in momentum is equal to the mass times the change in velocity. UNIT 5. Momentum 5.D Change in Momentum NAME DATE Scenario A 10 kg box, initially at rest, moves along a smooth horizontal surface. A horizontal force is opplied to the box. The magnitude of the force changes as a function of time as shoun. Take the positive direction to be to the right. Tme econd Data Analysis Rank the magnitude of the impulse applied to the box by the force during each 2-second interval indicated below: PART A A. 0-2 seconds B. 2-4 seconds C. 4-6 seconds D. 6-8seconds E.8-10 seconds Greatest impulse Smallest impulse Write a few sentences justifying your reasoning. Use words like speed, velocity, acceleration, time, force, momentum, and impulse. PART B: Using Representations PART C: Re-represent the data given in the force vs. time graph in Part A as a momentum vs. time graph for the same 10 kg box. Step 1: Identify the equation that relates force and momentum. Step 2 How can momentum be found from a force vs. time graph? Step 3: Plot the momentum as a funetion of time. (Make a table if you need to) 10 Time (s) | 135 Return to Table of Contents 2Categeard Momentum (kom/s) 5.D Change in Momentum Quantitative Analysis Use the graph above to calculate the velocity of the bax after 10 seconds. For each line in the calculation, explain what was done mathematically. The first line is done for you. Ap = mAi The change in momentumis equal to the mass times the change in velocity.
Answers
From the given data,
Part A: -In opposite direction Greatest impulse B>C>A>D>E smallest impulse
Part B: -increasing constantly thus acceleration is increasing resulting in increase of velocity and momentum as well.
Part C: -\(Force $=m$ a $\) =\($m \frac{\Delta v}{\Delta t}=\) \(m$ momentum\)
\(F=\frac{m}{\Delta t}\)
Mass of box \(=10kg\)
Impulse = \(F_{average}\) At
A. 0-2 seconds
Impulse = 1.5×2 = 3N sec
B. 2-4 sec
Impulse = 3×2 = 6N sec
C. 4-6 sec
Impulse = 2.75×2 =5.5N sec
D. 6-8 sec
Impulse = 1×2 = 2N sec
E. 8-10 sec
Impulse = 1×2 = 2N sec
In opposite direction Greatest impulse B>C>A>D>E smallest impulse.
For the first two seconds force is increasing constantly thus acceleration is increasing resulting in increase of velocity and momentum as well. Now for the next three seconds a constant force is acting on the box resulting in constant acceleration. After that for the next three seconds force goes on decreasing constantly thus deacceleration and decrease of impulse and velocity. In last 2 seconds deacceleration is in opposite direction that is how box starts moving in opposite direction
\((1) Force $=m$ a $\)\($=m \frac{\Delta v}{\Delta t}=\)\(m$ momentum\)
\(F=\frac{m}{\Delta t}\)
(2) Area under the curve gives the momentum
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What is the charge of an electron and charge of neutron
Answers
Answer:
The charge of a neutron is 0
The charge of an electron is -1
Explanation:
Answer:
The charge of Neutrons is: 0
The charge of Electrons is: -1
Explanation:
Neutrons are uncharged and Electrons are negatively charged. The negative charge of one electron balances the positive charge of one proton. Both protons and neutrons have a mass of 1, while electrons have almost no mass.
tv and radio stations transmit in specific frequency bands of the radio region of the electromagnetic spectrum. (a) tv channels 2 to 13 (vhf) broadcast signals between the frequencies of 59.5 and 215.8 mhz, whereas fm radio stations broadcast signals with wavelengths between 2.78 and 3.41 m. do these bands of signals overlap?
Answers
The results of the calculations demonstrate that the appropriate frequency bands for FM radio stations and TV channels 7 through 13 overlap.
The signals from radio and television stations are transmitted using particular frequency bands. The wavelength range for FM radio stations is between 2.78 and 3.41 metres (m), whereas the frequency range for TV channels 2 through 13 is between 59.5 and 215.8 megahertz (MHz).
To assess whether these frequency bands overlap, we can apply a formula that links frequency and wavelength.
The results of the calculations demonstrate that the appropriate frequency bands for FM radio stations and TV channels 7 through 13 overlap. This suggests that sometimes it can be challenging to receive both impulses since they might conflict with one another.
FM radio stations and TV channels 2 to 6 operate in distinct frequency bands, thus they may live harmoniously.
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DO YOU LIKE MY PHYSICS ESSAY?
Answers
Answer:
Yes
Explanation:
I love THAT SONG. And it is a good essay.
Answer: ( yes i do like your essay! )
I am breaking down in tears. /j
I should've expected this and i still fell for it
A pendulum consists of a 0.3 kg mass at the end of a string. The pendulum is raised to a height of 0.26 m and released. When the pendulum reaches its lowest point, it has a velocity of 2.28 m/s. What is the total energy of the Pendulum-Earth system?
Answers
The total energy of the Pendulum-Earth system is equal to 1.54416 Joules.
Given the following data:
Mass = 0.3 kgHeight = 0.26 meter.Velocity = 2.28 m/s.Scientific data:
Acceleration due to gravity on Earth = 9.8 \(m/s^2\)To calculate the total energy of the Pendulum-Earth system:
How to calculate total energy.The total energy possessed by this Pendulum-Earth system is equal to the sum of both the potential energy and kinetic energy at its lowest point.
Mathematically, the total energy is given by this formula:
\(E = mgh + \frac{1}{2} mv^2\)
Substituting the given parameters into the formula, we have;
\(E = 0.3 \times 9.8 \times 0.26 + \frac{1}{2}\times 0.3 \times 2.28^2\\\\E=0.7644+0.77976\)
E = 1.54416 Joules.
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A series RC circuit has a resistance of 200 ohm and a capacitance of 25 mF and is driven by a 120 V, 60 Hz source. (a) Find the capacitive reactance of the circuit.
Answers
Given:
The resistance is,
\(R=200\text{ ohm}\)The capacitance is,
\(\begin{gathered} C=25\text{ mF} \\ =25\times10^{-3}\text{ F} \end{gathered}\)The applied voltage is,
\(V=120\text{ V}\)The frequency of the AC is,
\(f=60\text{ Hz}\)To find:
The capacitive reactance
Explanation:
The capacitive reactance is,
\(\begin{gathered} X_C=\frac{1}{2\pi fC} \\ =\frac{1}{2\pi\times60\times25\times10^{-3}} \\ =0.106\text{ ohm} \end{gathered}\)Hence, the capacitive reactance is 0.106 ohm.
Consider a car speeding up as it drives along a level road. what is an action-reaction pair (from newton’s third law)?
Answers
Newton's third law of motion states that for every action, there is an equal and opposite reaction. The action-reaction pair is used to describe the interaction between two objects. Therefore, when a car is speeding up as it drives along a level road, an action-reaction pair occurs.
An action-reaction pair is a pair of forces that are equal in strength and opposite in direction. When an object exerts a force on another object, the second object exerts an equal and opposite force on the first object. The action-reaction pair when a car speeds up as it drives along a level road can be explained as follows: Action force: The car exerts a force on the road in the forward direction. This is the action force. Reaction force: The road exerts a force on the car in the backward direction. This is the reaction force.
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hey! please help i’ll give brainliest!
Answers
Question:
If you push a bowling ball and a golf ball with an equal force what will happen
Answer:
B)
Explanation:
Larger than the force used to push the object that has less mass. A golf ball and a bowling ball are moving at the same velocity. When gravity and air resistance are equal, the object has drawn its terminal velocity.
Explain your thinking. What definition, rule, or reasoning did you use to decide
whether something is a solid?
Answers
Answer:
Explanation:
A Solid is one of the three main states of matter. By definition a solid is something whose molecules are so densely packed together that it allows it to keep its shape. Therefore if the item has a definite shape that does not change on it's own it is a solid. As opposed to a liquid which will take and fill the shape of it's container.
If a fossil contains 60% of its original carbon, how old is the fossil
Answers
How do you write a letter to the editor of a newspaper in reference to bullying
Answers
How do you write a letter to the editor?
Open the letter with a simple salutation. ...
Grab the reader's attention. ...
Explain what the letter is about at the start. ...
Explain why the issue is important. ...
Give evidence for any praise or criticism. ...
State your opinion about what should be done. ...
Keep it brief. ...
Sign the letter.
What is the phase change called, when a GAS turns in to a SOLID
Answers
Answer:Deposition
Explanation:Deposition is the phase transition in which gas transforms into solid without passing through the liquid phase. ... The reverse of deposition is sublimation and hence sometimes deposition is called desublimation.
A particle of charge 5 × 10–2 C is taken from a point at a potential of 50V to another point at a potential of 250V. Calculate the work done.
Answers
Answer:
10 joules
Explanation:
Voltage= U(Potential energy)/qo
Q0 is the test charge
so,
250-50=w/5*10^-2
since potential energy = work done
w=10 joules