Se realiza un trabajo mecanico de 3500 J para levantar una cubeta con area cuyo peso tiene una determinada magnitud. Determina la altura a la que se elevo la cubeta
Answers
Answer:
10 m
Explanation:
Trabajo (W) = 3500 J, peso de la cuchara (F) = 350 N.
El trabajo es el producto de la fuerza que actúa sobre un objeto y la distancia o desplazamiento. La unidad de trabajo estándar son los joules (J).
Trabajo (W) = fuerza (F) × distancia (d)
W = F × d
\(d=\frac{W}{F} =\frac{3500J}{350}=10m\)
el cubo se elevó a 10 m
The height (distance) to which the bucket was raised is equal to 10 meters.
Given the following data:
Work done = 3500 JoulesWeight of bucket = 350 NewtonTo determine the height (distance) to which the bucket was raised:
Mathematically, work done is given by the formula:
\(Work\;done = Force \times distance\)
Substituting the given parameters into the formula, we have;
Note: Force = weight.
\(3500 = 350 \times distance\\\\Distance = \frac{3500}{350}\)
Distance = 10 meters.
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Related Questions
Observations and inferences are important in science. How would you explain the difference between these two words?
Answers
Answer:
The difference between observations and inferences is observations uses one or more of your five senses to know or determine something. However, inferences are where you make an explanation for the observation. For example, you see steam rising off a coffee cup ( this is an observation). The coffee is hot ( this is an inference).
what properties such as color density hardness
Answers
Which resource can be included in a lightning component bundle?
Answers
The Lightning Component bundle framework is a UI framework for developing single page applications for mobile devices and desktop devices like for windows and laptops.
Which resource can be included in a lightning component bundle?A Lightning Component bundle developed with the Aura programming model can have three JavaScript files. A created lightning component is a bundle of code. The bundle contain all that resources related which are required to a component like java script controller, java script helper, renderer, CSS styles, etc. A basic lightning component bundle contains the design of a page with some kinds of lightning tags.
So we can conclude that: The Lightning Component bundle framework is a UI framework for developing single page applications for mobile devices and desktop devices like for windows and laptops.
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Explain how potential and kinetic energy are at play when we talk about Newton’s second law of motion?
Answers
Answer:
represents the energy the object possesses by virtue of its motion. ... This type of energy is generally known as kinetic energy. Thus, Equation (16) states that any work done on point object by an external force goes to increase the object's kinetic energy.
Explanation:
The relation between some bodies are involved by Object's position and motion, i.e., through potential and kinetic energy in which it actually explained by Newton's second law of motion.
What is Newton's second law of motion?
Definition:
Newton's second law states that force is equal to the rate of change of momentum, i.e., the mass and velocity.
It can be written as F = mv where m is mass and v is velocity. Potential energy can be described by a body's position while kinetic energy is possessed by a body's motion. Both forms of energy are influenced by forces and are equal to the total momentum. Momentum can be described by explaining the mass and velocity of the object.Learn more about Newton's second law of motion,
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An rv is traveling 60 km/h along a highway at night. a boy sitting near the driver of the rv turns a flashlight on and shines it at another boy at the back end of the rv. what is the speed of the light relative to the boys? m/s what is the speed of light relative to a stationary observer on the side of the road? m/s
Answers
Speed of light relative to the boys = 300,000,000 m/s
Speed of light relative to a stationary observer on the side of the road =
300,000,000 m/sWhat is special theory of relativity?The theory of special relativity explains how speed affects space, time, and mass. Small amounts of mass (m) can be interchangeable with large amounts of energy (E), as defined by the classic equation E = mc2, according to the theory, which offers a means for the speed of light to define the link between energy and matter.What are the special relativity's guiding principles?The laws of physics should be independent of the uniform motion of an inertial frame of reference, and the speed of light should be constant in any such frame, according to two fundamental tenets that constitute the basis of the special theory of relativity.To learn more about special relativity visit:
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Answer:
first answers are 25 & 35, second answers are both 300,000,000
Explanation:
A graph here shows the displacement of two walkers over time. Waliper 1 is graphed in red while walker 2 is graphed
in blue. Which statements are supported by the information in the guaph? Select ALL that apply.
)
Α)
Both walkers had the same speed overall.
B)
Walker 2 was at rest for the first five seconds.
C)
Walker 1 moved faster overall than walker 2 by the end.
D)
Walker 2 moved faster overall than walker 1 by the end.
E)
Both walkers had reached the same distance at fifteen seconds.
Answers
Answer:
B) Walker 2 was at rest for the first five seconds. D) Walker 2 moved faster overall than walker 1 by the end. E) Both walkers had reached the same distance at fifteen seconds.
Explanation:
I did the UsaTestPrep
During the spin cycle the wash machine that cloths stick to the outer wall the barrel as it spins at a rate as high as 1950 rpm the radius of the barrel inside the wash machine is 0.5 m what is the speed of the clothes as a spin in the barrel?
Answers
The linear speed of the clothes as a spin in the barrel is 102.1 m/s.
What is the linear speed of the clothes?
The linear speed of the clothes is the measure of the change of displacement of the clothes with time.
Mathematically, the formula for linear speed is given as;
v = ωr
where;
v is the linear speed of the clothesω is the angular speed of the clothesr is the radius of the barrelThe angular speed of the wash machine is given as;
ω = 1950 rpm = 1950 rev/min x 2π rad/rev x 1 min/60 s = 204.2 rad/s
v = 204.2 rad/s x 0.5 m
v = 102.1 m/s
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describe two similarities and two differences between electric and magnetic field lines. (consider such things as where they originate and terminate, how they are related to the direction and strength of the field, whether they are closed curves or lines, and whether there's anything you can say about their flux through a closed surface.). others?? display keyboard shortcuts for rich content editor
Answers
Two similarities between electric and magnetic field lines are:
1. Direction: Both electric and magnetic field lines represent the direction of the force exerted on a charged particle or a magnetic pole.
Electric field lines originate from positive charges and terminate at negative charges, while magnetic field lines show the direction a north magnetic pole would move within the field.
2. Field strength: In both electric and magnetic fields, the field strength is proportional to the density of the field lines. More closely spaced lines indicate a stronger field, and the strength decreases as the lines become farther apart.
Two differences between electric and magnetic field lines are:
1. Origin and termination: Electric field lines originate from positive charges and terminate at negative charges, indicating the direction of the electric force.
Magnetic field lines, however, form closed loops, as they originate from the north pole of a magnet and terminate at the south pole, representing the continuous nature of the magnetic field.
2. Flux through a closed surface: For electric fields, the net electric flux through a closed surface is proportional to the total enclosed charge, as described by Gauss's Law.
In contrast, for magnetic fields, the net magnetic flux through any closed surface is always zero.
This is because magnetic field lines form closed loops, and there are no isolated magnetic poles (monopoles) in nature, which means that the magnetic field lines that enter a closed surface must also exit it.
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a 1 020-kg satellite orbits the earth at a constant altitude of 93-km. (a) how much energy must be added to the system to move the satellite into a circular orbit with altitude 210 km? how is the total energy of an object in circular orbit related to the potential energy? mj (b) what is the change in the system's kinetic energy? mj (c) what is the change in the system's potential energy?
Answers
Answer:
Approximately \(5.4 \times 10^{8}\; {\rm J}\) of energy will be required. Total mechanical energy of this satellite is equal to \((1/2)\) of its gravitational potential energy.
The kinetic energy of the system will decrease by approximately \(5.4 \times 10^{8}\; {\rm J}\) (a change of \((-5.4) \times 10^{8}\; {\rm J}\).)
The gravitational potential energy of the system will increase by approximately \(1.1\times 10^{9}\; {\rm J}\).
Explanation:
Let \(G\) denote the gravitational constant. Let \(M\) denote the mass of the Earth. Let \(r\) denote the radius of the orbit. Let \(v\) denote the orbital speed of the satellite. Let \(m\) denote the mass of the satellite.
Assume that the gravitational attraction from the Earth \((G\, M\, m) / (r^{2})\) is the only force on the satellite. The acceleration of the satellite will be:
\(\begin{aligned}(\text{acceleration}) &= \frac{(\text{net force})}{(\text{mass})} \\ &= \frac{(G\, M\, m) / (r^{2})}{m}= \frac{G\, M}{r^{2}}\end{aligned}\).
Since the satellite is in a uniform circular motion of orbital speed \(v\) and radius \(r\), acceleration will be \((v^{2} / r)\) (centripetal acceleration.)
\(\begin{aligned}(\text{acceleration}) &= \frac{v^{2}}{r}\end{aligned}\).
Therefore:
\(\begin{aligned}\frac{v^{2}}{r} &= (\text{acceleration}) = \frac{G\, M}{r^{2}}\end{aligned}\).
Rearrange and solve for orbital speed \(v\):
\(\begin{aligned}v^{2} &= \frac{G\, M}{r}\end{aligned}\).
\(\begin{aligned}v &= \sqrt{\frac{G\, M}{r}}\end{aligned}\).
With a mass of \(m\), the kinetic energy \((\text{KE})\) of this satellite will be:
\(\begin{aligned}(\text{KE}) &= \frac{1}{2}\, m\, v^{2} \\ &= \frac{1}{2}\, m\, \left(\frac{G\, M}{r}\right) = \frac{G\, M\, m}{2\, r}\end{aligned}\).
The gravitational potential energy \((\text{GPE})\) of the satellite would be:
\(\begin{aligned}(\text{GPE}) &= \left(-\frac{G\, M\, m}{r}\right)\end{aligned}\).
The total mechanical energy of this satellite is the sum of \((\text{KE})\) and \((\text{GPE})\).
\(\begin{aligned}(\text{KE}) + (\text{GPE}) &= \left(\frac{G\, M\, m}{2\, r}\right) + \left(-\frac{G\, M\, m}{r}\right) = \frac{-G\, M\, m}{2\, r}\end{aligned}\).
Hence, the total (mechanical) energy of this satellite is \((1/2)\) the value of potential energy.
The radius of the Earth is approximately \(6.378 \times 10^{6}\; {\rm m}\). At the initial orbit (\(h = 93\; {\rm km} = 93\times 10^{3}\; {\rm m}\),) the orbital radius will be approximately \(6.378 \times 10^{6}\; {\rm m} + 9.3 \times 10^{4}\; {\rm m} \approx 6.471 \times 10^{6}\; {\rm m}\).
Kinetic energy:\(\begin{aligned} & (\text{KE}) \\ =\; & \frac{G\, M\, m}{2\, r} \\ =\;& (6.6743 \times 10^{-11}\; {\rm m^{3}\cdot kg^{-1} \cdot s^{-2}})\\ & (5.792\times 10^{24}\; {\rm kg}) \\ & (1020\; {\rm kg}) \\ & (1/2) \\ & (1/(6.471 \times 10^{6}\; {\rm m})) \\ \approx\; & 3.0467\times 10^{12}\; {\rm J}\end{aligned}\).
Gravitational potential energy:
\(\begin{aligned} & (\text{GPE}) = \frac{-G\, M\, m}{r} \approx (-6.0934) \times 10^{10}\; {\rm J}\end{aligned}\).
Total mechanical energy:
\(\begin{aligned} (\text{KE}) + (\text{GPE}) =\; & \frac{-G\, M\, m}{2\, r} \approx (-3.0467) \times 10^{10}\; {\rm J}\end{aligned}\).
At the new orbit (\(r = 210\; {\rm km} = 210 \times 10^{3}\; {\rm m}\)):
Kinetic energy:\(\begin{aligned} (\text{KE}) = \frac{G\, M\, m}{2\, r} \approx 2.9926 \times 10^{10}\; {\rm J}\end{aligned}\).
Gravitational potential energy:
\(\begin{aligned} (\text{GPE}) =& \frac{-G\, M\, m}{r} \approx(-5.9852\times 10^{10})\; {\rm J}\end{aligned}\).
Total mechanical energy:
\(\begin{aligned} (\text{KE}) + (\text{GPE}) = -\frac{G\, M\, m}{2\, r} \approx\; &(-2.9926) \times 10^{10}\; {\rm J}\end{aligned}\).
The energy that need to be added to the system is equal to the difference in total mechanical energy (\((\text{GPE}) + (\text{KE})\)):
\(((-2.9926) \times 10^{10}\; {\rm J}) - ((-3.0467) \times 10^{10}\; {\rm J}) \approx 5.4 \times 10^{8}\; {\rm J}\).
Change in the kinetic energy of the system:
\((2.9926 \times 10^{10}\; {\rm J}) - (3.0467\times 10^{10}\; {\rm J}) \approx (-5.4) \times 10^{8}\; {\rm J}\).
In other words, the kinetic energy of the system would be reduced by approximately \((-5.4) \times 10^{8}\; {\rm J}\).
Change in the gravitational potential energy of the system:
\(\begin{aligned}& (-5.9852\times 10^{10}\; {\rm J}) - (-6.0934\times 10^{10}\; {\rm J})\approx 1.1 \times 10^{9}\; {\rm J}\end{aligned}\).
In other words, the gravitational potential energy of the system would increase by approximately \(1.1 \times 10^{9}\; {\rm J}\).
Improperly installed air conditioners can occasionally fall from apartment windows down onto the road below. How long does a pedestrian have to get out of the way of an air conditioner falling eight stories [24m] hello I just need help idea my vi vf t d a and I am not certain if it is a horizontal question or not
Answers
Given data:
* The distance traveled by the air conditioner is,
\(d=24\text{ m}\)Solution:
As the air conditioner is falling freely under the action of gravity.
Thus, the acceleration of the air conditioner is equal to the acceleration due to gravity.
\(\begin{gathered} a=g \\ a=9.8ms^{-2} \end{gathered}\)As the air conditione ris falling itself from the height.
Thus, the initial velocity of the air conditoner is,
\(v_i=0\text{ m/s}\)By the kinematics equation, the final velocity of the air conditioner is,
\(v^2_f-v^2_i=2ad\)Substituting the known values,
\(\begin{gathered} v^2_f-0=2\times9.8\times24 \\ v^2_f=470.4 \\ v_f=21.69\text{ m/s} \end{gathered}\)Thus, the final velocity of the air conditioner is 21.69 m/s.
By the kinematics equation, the time taken by the air conditioner,
\(v_f-v_i=at\)where t is the time taken by the air conditioner to reach the ground,
Substituting the known values,
\(\begin{gathered} 21.69-0=9.8t \\ t=\frac{21,69}{9.8} \\ t=2.21\text{ s} \end{gathered}\)Thus, the time taken by the air conditioner ot reach the ground is 2.21 seconds.
plz answer this very soon
Answers
Answer:
Im gonna say it is answer A:) Hope this helps!
Explanation:
Parallel field lines evenly spaced and all pointing left labeled b. there is a point with a vector down labeled v. what is the direction of the force for a negative charge moving downward in a magnetic field pointing to the left? out of the screen into the screen upward downward
Answers
The direction of the force for a negative charge moving downward in a magnetic field pointing to the left is towards the right. This can be determined using the right-hand rule, where the force direction is perpendicular to both the velocity vector and the magnetic field lines.
When a negative charge moves in a magnetic field, it experiences a force that is perpendicular to both the magnetic field lines and the velocity of the charge. In this case, the magnetic field lines are parallel, evenly spaced, and pointing to the left, while the charge moves downwards. By applying the right-hand rule, the direction of the force on the negative charge can be determined, which is towards the right.
This means that the negative charge will experience a force that acts in a direction perpendicular to both its velocity and the magnetic field, and the magnitude of the force will depend on the velocity of the charge and the strength of the magnetic field.
The complete question is
Parallel field lines evenly spaced and all pointing left labeled b. There is a point with a vector down labeled v. What is the direction of the force for a negative charge moving downward in a magnetic field pointing to the left?
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Answer: into the screen
Explanation:
What inductance must be connected to a 19 pF capacitor in an oscillator capable of generating 490 nm (i.e., visible) electromagnetic waves
Answers
The inductance required for an oscillator to generate 490 nm electromagnetic waves is 2.66 * 10⁻⁹ H.
What is electromagnetic wave?An electromagnetic wave is an oscillating wave of electric and magnetic energy, travelling through space at the speed of light. It is a form of energy that is created when electric and magnetic fields vibrate in unison. Electromagnetic waves are made up of oscillating electric and magnetic fields that travel through the air and other materials.
The inductance required for an oscillator to generate 490 nm electromagnetic waves depends on the type of oscillator being used. The equation for calculating the required inductance is L = 1 / (2 * π * f * C), where L is inductance, f is frequency,
and C is capacitance.
In this case, the frequency would be f = c / λ,
where c is the speed of light and λ is the wavelength (490 nm).
Plugging in the values, we get L = 1 / (2 * π * (3 * 10⁸ / 490 * 10⁻⁹) * 19 * 10⁻¹²) = 2.66 * 10⁻⁹ H.
So, the inductance required for an oscillator to generate 490 nm electromagnetic waves is 2.66 * 10⁻⁹ H.
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a cylinder of mass 15.0 kg rolls without slipping on a horizontal surface. at a certain instant its center of mass has a speed of 8.0 m/s. (a) determine the translational kinetic energy of its center of mass.
Answers
The translational kinetic energy of the cylinder of the mass of 15 kg which rolls with the speed of 8 m/s is 60 J
The mass of the cylinder = 15 kg
The speed of the cylinder = 8.0 m/s
The translational kinetic energy can be found using the formula,
T.K.E = 1/2mv²
where T.K.E is the translational kinetic energy
m is the mass of the cylinder
v is the speed of the cylinder
Let us substitute the known values in the above equation, we get
T.K.E = 1/2 x 15 x 8
= 120 / 2
= 60 J
Therefore, the translational kinetic energy of the cylinder is 60 J
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A 5.5 Kg rock falling in air experience a force due to air resistance of 50N. What is the acceleration
Answers
Answer:
F1 = ma = 5.5 kg * 10 m/s² = 55 N (force acts downwards)
F2 = - 50 N (force acts upwards)
net force = 5 N (downwards)
F = ma
a = F/m
a = 5 / 5.5
a = 0.91 m/s²
Explanation:
Since the object is falling downwards, the air resistance acts upwards. We also have a force acting downwards since the rock experiences gravitational acceleration (the value of g above is 10 m/s² for the sake of easier calculation but you can also set it to be 9.81 m/s² which is the more accurate value). Since the air resistance and force due to gravity are acting in opposite directions and force is a vector, we have to put a minus in front of F1 or F2 (it doesn't matter which direction you chose to be the positive one) . Then we calculate the net force, aka the difference between F1 and F2. Finally, knowing the force and the mass, we can calculate the acceleration.
what is the momentum of a 79kg runner traveling at 8m/s
Answers
Answer:
20mph
Explanation:
monochromatic light of wavelength 590 nm is passed through a narrow slit, and a diffraction pattern is observed on a screen 5.43 m away. the distance between the centers of the first order fringes on either side of the central bright fringe is 30.8 mm. what is the width of the slit (in mm)? you may assume the wavelength of the light is much smaller than the slit width.
Answers
The width of the slit is approximately 69.5 µm or 0.0695 mm.
We can use the formula for the diffraction pattern produced by a single slit to determine the width of the slit:
d*sin(θ) = mλ
where d is the width of the slit, θ is the angle between the direction of the diffracted light and the direction of the incident light, m is the order of the fringe, and λ is the wavelength of the light.
For the first-order fringes, m = ±1. The angle θ can be approximated by:
θ ≈ y/L
where y is the distance between the central bright fringe and the first-order fringe, and L is the distance between the slit and the screen. Therefore, we have:
θ = y/L
= 30.8 mm / 5.43 m
= 0.00567 rad
Substituting the values into the formula, we get:
d*sin(θ) = mλ
d*sin(0.00567) = ±1 * 590 nm
d = ±1 * 590 nm / sin(0.00567)
d = 69.5 µm
Therefore, the width of the slit is approximately 69.5 µm or 0.0695 mm.
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The angular resolution of a ground-based telescope is usually determined by:
Answers
For telescopes in general, ever since they were invented, it's the size of the objective lens (in the front) or mirror (in the back).
For the most hugest humongous telescopes, built in the past few decades, it's limited by the turbulence of the atmosphere. That's the main reason we started building the big ones on mountain tops and in deserts, and lately we've started putting them in Earth orbit, where they don't have to look through any air at all.
If low CVP precipitates a suction alarm, rapid infusion of volume can remedy the situation after dropping the P-level.
True / False.
Answers
Answer:
d
Explanation:
Answer:true
Explanation:
Order these space notes in the bass clef from highest space to lowest space?
1) E
2)C
3)A
4)G
Answers
Answer:
g e c a
Explanation:
Hope I helped!
Select the correct answer.
A stone is dropped from a tower 100 meters above the ground. The stone falls past ground level and into a well. It hits the water at the bottom
of the well 5.00 seconds after being dropped from the tower. Calculate the depth of the well. Glven: g=-9.81 meters/second?
A.22.5 meters
B.50.7 meters
C.100 meters
D.110 meters
E.152.45 meters
Answers
Answer:
A
Explanation:
Givens
d = 100 meters plus the depth of the well
d = 100 + x where x is the depth of the well.
vi = 0 m/s The object is dropped. It was not thrown.
t = 5 seconds
a = 9.81 m/s^2
formula
d = vi*t + 1/2 a t^2
solution
100 + x = 0 + 1/2 * 9.81 * 5^2
100 + x = 122.625 Subtract 100 from both sides
x = 122.625 - 100
x = 22.6 m
The well is 22.6 meters deep.
What type of motion is illustrated in the diagram below?
A. Oscillating motion faster than the speed of sound.
B. Oscillating motion slower than the speed of sound.
C. Circular motion faster than the speed of sound.
D. Circular motion slower than the speed of sound.
Answers
Answer:
Explanation:
C
The study of electrons as it relates to their use in electric devices
Answers
Answer:
An electron is a component of the broader term, electricity. Generally electricity refers to the control, manipulation, and use of the movement of electrons to perform some kind of work (motion/rotation, light, heat, etc…).
Explanation:
Or
put this
The study of electrons as it relates to their use in electric devices is electricity.
But I will go with the first one
PLEASE HELP Due Soon!
When the motion energy of an object changes, energy is being transferred. How do you know that's true?
Answers
Answer:
Explanation:
When objects collide, energy can be transferred from one object to another, thereby changing their motion. In such collisions, some energy is typically also transferred to the surrounding air; as a result, the air gets heated and sound is produced.
Which two formulas are used to calculate potential and kinetic energy?
A. KE = vamp2
B. KE = mgh
C. KE = Vmg?
D. PE = mgh
E. PE = mvh
F. PE = Vmv2
Answers
Answer:
P.E = mgh
K.E = 1/2mv²
Explanation:
P.E = mgh
That is m= mass in kilograms, g=acceleration due to gravity and h= height in meters.
K.E = 1/2mv²
That is 1/2 of an object's mass multiplied by the velocity squared.
The formula to calculate the potential energy is mgh and the formula to calculate kinetic energy is 1/2mv².
What are kinetic and potential energy?The energy that an object has as a result of motion is known as kinetic energy. The effort needed to move a mass-determined body from rest to the stated velocity is how it is defined.
The formula to calculate the kinetic energy is calculated as below:-
K.E = 1/2mv²
The energy that an item retains because of its position in relation to other objects, and internal stresses. The formula to calculate the potential energy of the objects is given below.
P.E = mgh
That is m= mass in kilograms, g=acceleration due to gravity, and h= height in meters.
Therefore, the formula to calculate the potential energy is mgh and the formula to calculate kinetic energy is 1/2mv².
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a ball is thrown horizontally from a cliff. identify which of the following statements about the ball is/are correct.
Answers
The correct statement is the vertical velocity of the ball increases as it falls.
I only is the correct option
What is velocity?Velocity can be described as the rate of change of the object's position with respect to a frame of reference and time.
If a ball is thrown horizontally from a cliff, the vertical velocity of the ball increases as it falls.
The Vertical velocity of an object is its speed and direction on the vertical plane.
A Vertical velocity is a specific form of velocity because it is constantly impacted by gravity's acceleration in the vertical direction and plane.
It is expressed as V =\(V_{o}\) -gt
where v = velocity
\(V_{o}\)= initial velocity
g = acceleration due to gravity
t= time
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Which of the following conditions should be met to make a process perfectly reversible?
Check all that apply.
(1) Any mechanical interactions taking place in the process should be frictionless.
(2) Any thermal interactions taking place in the process should occur across infinitesimal temperature or pressure gradients.
(3) The system should not be close to equilibrium.
Answers
1) Any mechanical interactions taking place in the process should be frictionless, to make a process perfectly reversible
What is mechanical interactions?
Mechanical interactions are physical forces that are used to affect the behavior of objects and materials. This can include contact forces such as friction, tension, and compression, as well as non-contact forces such as gravity, magnetism, and electric fields
Mechanical interactions can be used to cause objects to move, change shape, or experience a change in energy. These interactions can also be used to create, store, or transfer energy. Mechanical interactions are studied by engineers and scientists in multiple disciplines, and are used in many different applications, including the design of machinery, medical devices, and consumer products.
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A 10 kg block is raised vertically 3 m. What us most nearly the change in potential energy?
(A) 30 J
(B) 98 J
(C) 290 J
(D) 880 J
Answers
The most nearly the change in potential energy is calculated as (C) 290 J.
What is potential energy?Form of energy that any object possesses by virtue of its position or configuration in a force field is called potential energy.
The change in potential energy of an object raised vertically is given by the product of object's mass, acceleration due to gravity and height it is raised. Therefore, change in potential energy of the 10 kg block raised vertically 3 m is:
Change in potential energy = mass x gravity x height
Change in potential energy = 10 kg x 9.81 x 3 m
Change in potential energy = 294.3 J
The closest answer choice to this result is (C) 290 J. Therefore, most nearly change in potential energy is 290 J.
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Help please!!! List five general things we get from natural resources?
Answers
Answer:
Paper, clothing, fuel, cans, and jewelry
Explanation:
A 10 kg box is motionless on the floor. If the coefficient of static friction is 0.4 and the coefficient of kinetic friction is 0.3 (between the box and the floor), find the force required to start the block in motion
Please I need help ❤️
Answers
The force required to start the block in motion is equal to 39.2 Newton.
Given the following data:
Mass of box = 10 kgCoefficient of static friction = 0.4 Coefficient of kinetic friction = 0.3To determine the force required to start the block in motion:
Note: The force that is required to start the block in motion must be greater than or equal to the force of static friction.
Mathematically, the force of static friction is given by the formula;
\(Fs = uFn = umg\)
Where;
Fs represents the force of static friction.μ represents the coefficient of friction.\(F_n\) represents the normal force.g is the acceleration due to gravity.m is the mass of an object.Substituting the given parameters into the formula, we have;
\(F_s = 0.4 \times 10 \times 9.8\\\\F_s = 4 \times 9.8\\\\F_s = 39.2\;Newton\)
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