The mechanical energy of the system 0.150 s after the ball was released is 0.920J.
Describe mechanical energy.The sum of potential and kinetic energy is referred to as mechanical energy. It is the force responsible for an object's motion and positioning. There are several types of mechanical energy, including kinetic energy, which is present in moving objects, and potential energy, which is present in compressed springs.
Equation of motion of harmonic oscillator
X = a\(e^{-rt}\) cos(wt)
X = A(t) cos(wt)
Total mechanical energy,
E = 1/2KA²t
E = 1/2Ka²\(e^{-2rt}\)
r = b/2m
E (0.150) = 0.250 J exp(-2x (2.0/2×0.300) ×150)
E (0.150) = 0.250 exp(-1)J
E (0.150) = 0.250/eJ
E = 0.920J.
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principal of simple machine?
Answer:
if there is no friction in a simple machine, work output and work input are found equal in that machine
Explanation:
A student needs to put insulator tubing around the wires that run from the rotating loop to the light bulb. What type of material should the student use for insulator tubing?
Aluminum
Silver
Rubber
Copper
Answer:
rubber
Explanation: because its the only insulator
what happen to internal energy of water at 0 degree?
Answer:
internal energy apparently increases.
If resistor R3 is replaced with a wire which of the following describes what would happen to the circuit? a) short circuit. b) no change.
If resistor R3 is replaced with a wire, the circuit would experience a. a short circuit.
A short circuit occurs when a current passes through a path with a very low resistance, causing an excessive amount of current to flow through the circuit. This, in turn, causes the power source to produce an uncontrolled amount of power that can quickly overheat and cause a fire.
A short circuit can also damage the circuit components and potentially cause an electrical shock. Therefore, it is essential to ensure that resistors are appropriately sized and used to manage the flow of current in a circuit. If a resistor is replaced with a wire, it may also alter the voltage drop and resistance of the circuit, leading to unpredictable behavior. Hence, it is not recommended to replace a resistor with a wire unless it is part of a specific design or testing process.
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Help pls and thank you PLEASE NO LINKS
Answer: mutation
explanation: no other species of its kind will have this mutation
Answer:
Mutation
Explanation:
An iron nail is more strongly attracted to the a) north pole of a magnet b) south pole of a magnet. c) north or south pole-no difference really
An iron nail is drawn to the magnet's north pole and adheres to it. The iron nail becomes a conduit for the magnetic field lines. As a result, the side that becomes attached to the North Pole serves as the South Pole.
Is an iron nail more drawn to a magnet's north or south pole?
A magnet's strength is greatest close to its poles. Therefore, the magnet's two poles will attract the greatest amount of nails.
An iron nail is more attracted to which pole of a magnet?
Iron nails are magnetically inducted to acquire the opposite polarity when they are brought close to one end of a magnet. Since opposing poles are drawn to one another,
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Please I need help kindly answer it fast.
Answer:
a
Explanation:
Answer:
3
Explanation:
period=1\time
period=1\3
period=0.3
- A thin film of oil * (n = 1.45) on a puddle of water, producing different colors. What is the minimum thickness of a place where the oil creates constructive interference for light with a wavelength equal to 545 nm?
Answer:
There will be a phase change at the first interface and no phase change at the second interface:
If the film is 1/4 wavelength thick this restriction will hold
The wavelength of the light in oil is 545 nm / 1.45 = 376 nm
376 nm / 4 = 94 nm
"D" is correct
* Question Completion Status: Moving to another question will save this response. Question 29 Which one of the following statements is not true? (choose all apply) O UV radiation is a type of ionizing
One statement that is not true is that UV radiation is a type of electromagnetic radiation. It is also a type of ionizing radiation. UV radiation is actually a form of non-ionizing radiation.
UV radiation, or ultraviolet radiation, is a type of electromagnetic radiation that falls between visible light and X-rays on the electromagnetic spectrum. It is often categorized into three types: UVA, UVB, and UVC. Unlike ionizing radiation, such as X-rays and gamma rays, which have enough energy to remove tightly bound electrons from atoms or molecules, UV radiation lacks the necessary energy to ionize atoms or molecules. Instead, it primarily interacts with the outermost electrons of atoms or molecules, leading to chemical reactions and causing biological effects.
UV radiation is commonly associated with sunlight and has various effects on living organisms and materials. It can cause sunburn, premature aging of the skin, and an increased risk of skin cancer. Exposure to excessive UV radiation can also damage the eyes and impair the immune system. It is important to protect oneself from excessive UV exposure by wearing sunscreen, protective clothing, and sunglasses.
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Check
What happens to the light coming from the Sun?
What happens to light on the surface of water?
What happens to light on the surfaces of rocks?
Photo by Andres Nieto Porras
an electric motor is used to lift a 10n load through 5m. the total amount of electrical energy is 65j. (¡)what is the amount of energy wasted by the motor? (ii)what is the efficiency of the motor?
0.769 joule is the amount of energy wasted by the motor
power=work done/time
power=10×5/65
power=0.769 joule
In physics, energy is the capacity to out work. It may take on several forms, including potential, kinetic, thermal, electrical, chemical, radioactive, etc. Heat and labor are two further examples of energy being transferred from one body to another. Once it has been transmitted in line with its nature, energy is always disseminated. Thus, although exertion can provide mechanical energy, heat transfer might produce thermal energy.
All types of energy have the characteristic of motion. For instance, a body has kinetic energy if it is moving. A tensioned item, such a spring or bow, may move even while at rest because of the device's design, which incorporates potential energy.
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A car increases its velocity from zero to 97 km/h in 8.4 s. What is its acceleration?
Answer:
\(a=\frac{v-u}{t}\)
\(v=\)final velocity =97km/h(change to m/s) =26.9m/s NEVER FORGET TO DO THAT BECAUSE TIME IS GIVEN IN SECONDS
\(u=\)initial velocity 0 m/s
\(t=\)time 8.4s
\(a=\frac{26.9-0}{8.4}\)
\(a=\) \(3.2m/2^{2}\)
radiation is a(n) when it produces leukemia in radiologists and survivors of atomic bomb explosions.
Radiation is a significant risk factor when it produces leukemia in radiologists and survivors of atomic bomb explosions.
Ionizing radiation, such as that emitted from radioactive materials, medical equipment, and atomic bombs, has enough energy to remove tightly bound electrons from atoms, causing them to become charged particles or ions. These ions can damage cellular structures, including DNA, which can lead to mutations and ultimately cause cancer, such as leukemia. Radiologists, who are regularly exposed to ionizing radiation during their work with diagnostic imaging equipment, are at an increased risk of developing leukemia. Similarly, survivors of atomic bomb explosions have been exposed to high levels of ionizing radiation, which can also result in the development of leukemia, this increased risk is due to the mutagenic nature of ionizing radiation, which directly influences the genetic material of cells.
In both scenarios, safety measures and guidelines should be in place to minimize the exposure to ionizing radiation. For radiologists, this may include wearing protective gear and limiting the duration of their exposure to radiation sources. For survivors of atomic bomb explosions, monitoring and assessing long-term health risks become vital for early detection and treatment of radiation-induced leukemia. In conclusion, radiation is a significant risk factor for leukemia development in both radiologists and survivors of atomic bomb explosions due to the damage it causes to the cellular structures, particularly DNA.
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A 202 kg bumper car moving right at 8.50 m/s collides with a 355 kg car at rest. Find the total momentum of the system .
Answer:
I just did this problem so I promise you my answer is correct the total momentum of the system is 1717.
Explanation:
What you do is find the momentum of the first object which is simple enough 202(8.5) which equals 1717 and an object at rest will have no momentum which is shown when you have to plug in a 0 for velocity and multiply you get zero. Then to find the total you just add 1717+0 which obviously gives you 1717.
Answer:
1717
Explanation:
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What’s the mass of the continent?
Answer:
Assume that the north american continent can be respanterd by a slab of rock 4000 km on a side and 30 km deep and that the rockiam help for youthankscommentflowingUn prisma rectangular con un volumen de 80 m^3 se sumerge hasta la mitad en agua, calcular la fuerza de empuje que recibe.(rho_(del agua)=1000 kg/m^3)
Answer:
400 kN
Explanation:
El principio de Arquímedes establece que, cuando un cuerpo está total o parcialmente sumergido en un fluido, experimenta un empuje hacia arriba que es igual al peso del fluido desplazado.
Dado que;
Volumen del bloque = 80m ^ 3
Densidad del agua = 1000 kg / m ^ 3
Empuje hacia arriba = 1/2 * 80 * 1000 * 10
Empuje hacia arriba = 400 kN
Explain why atomic theory has changed
What is the position of the earth, moon, and sun during a new moon?
Earth is between the sun and the moon
sun is between Earth and the moon
moon is to the side of Earth and the sun
moon is between the sun and Earth
Answer: The first option
Explanation: common sense
The Moon always rotates about the Earth in its orbit. The position of the Earth, moon and sun during a new moon is Earth is in between Sun and Moon.
What is new moon?When moon has travelled for 14 days, it starts its journey again for the next 14 days. The journey starts from the new moon to the full moon. The position of new and full moon is the same. At this time, the Earth is in between the Sun and the Moon.
Thus, the position of the Earth, moon and sun during a new moon is Earth is in between Sun and Moon.
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In the process of photosynthesis, how do plants obtain the water, carbon dioxide, and energy they use for this process?
Answer:
They get it from the air and soil. They also take energy from the sun.
Explanation:
During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil.
Help me as pleasessss help with 1,2 and 3
free fall occurs only in lunar but not in earth's surface, why?
Answer:
You can get free fall in Earth's atmosphere as long as you move the air along with the falling object. This is how free fall is produced in reduced gravity aircraft. The aircraft itself is not in free fall because it has to use its engines to overcome atmospheric drag.
Explanation:
i hope it help
If the 10v battery were replaced by a 15v battery would the current through the 70-ohm resistor increase decrease or remain the same?
Answer:
I think it would increase sorry if I'm wrong
Tom walked slowly along the road, stopped to look at hid watch, realized he was late, and then started running.
Which table matches with this story?
Answer:
Box U
Explanation:
Lets clarify
He started from rest hence distance should be started from 0.He stopped in middle hence there should be a zero in the middle .(Only in U)Then the distance become higher as he started running.Answer: Table U matches the story
Si lo deseas cada estudiante puede hablar algún otro aspecto de la pandemia que les parezca importante e interesante
Answer:
Give them assignment on the pandemic.
Explanation:
If you wish, each student can talk about some other aspect of the pandemic that seems important and interesting then you have to give them the assignment of presentation and give reward on them. The students will definitely make the presentation on other aspects of the pandemic and when they present it in the class it enhance the knowledge of other students as well.
PLEASE HELP 40 POINTS
Liar, not even 40 points....
Based on the diagram, which statement explains how energy is conserved
during this chemical reaction?
A
B
PA
с
Reaction progress
A. The potential energy lost during the formation of products (B) is
gained by the surroundings.
B. The potential energy lost by the reaction system (C) is also lost by
the surroundings.
C. The potential energy changes indicated by A and B show energy
that is lost by the surroundings.
The potential energy lost during the formation of product (B) is gained by the surroundings.
What is exothermic reactions?Exothermic reactions is a type of chemical reaction in which heat is lots to the surroundings.
From the given diagram, the energy of the reactants are more when compared to the products, so the reaction is exothermic and heat is released to surroundings.
Thus, the potential energy lost during the formation of product (B) is gained by the surroundings.
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action and reaction are equal in magnitudeand opposite in direction then why do they not balance each other ?
Because they act on different objects.
The hubble telescope has helped confirm what about the universe?.
Answer:
Helped pin down the age for the universe now known to be 13.8 billion years, roughly three times the age of Earth. Discovered two moons of Pluto, Nix and Hydra. Helped determine the rate at which the universe is expanding. Discovered that nearly every major galaxy is anchored by a black hole at the centre.
Explanation:
5 V battery with metal wires attached to each end.
The figure shows two wires connected to a battery’s positive and negative terminals. These wires stop short of completing a circuit. Four points are marked on the wires. Point 1 is at the end of the wire connected to the positive terminal. Point 2 is at the negative terminal. Point 3 is at the positive terminal. Point 4 is at the end of the wire connected to the negative terminal.
What are the potential differences ΔV12=V2−V1, ΔV23=V3−V2, ΔV34=V4−V3, and ΔV41=V1−V4?
Enter your answers numerically separated by commas
The potential differences is ΔV12=V2−V1=0V
ΔV23=V3−V2=5V
ΔV34=V4−V3= 0V
and ΔV41=V1−V4=-5V
From the figure, there is no connection between the points 1 and 4 . Hence, the potential at the points 4 and 3 is same and is equal to zero.
\(\Delta V_{34} & =V_4-V_3 \\& =0\)
Similarly, the potential at the points 1 and 2 is same and is equal to zero.
\(\Delta V_{12} & =V_2-V_1 \\& =0\)
The potential difference between the points 4 and 1 is equal to potential difference between the points 3 and 2.
Given that the potential difference across the points 3 and 2 is,
\(\Delta V_{23} & =V_3-V_2 \\& =5 \mathrm{~V}\)
The potential difference between the points 4 and 1 is also 5V.
\(\Delta V_{41} & =-\Delta V_{23} \quad\left(\because \Delta V_{23}=\Delta V_{14}\right) \\& =-5 \mathrm{~V}\)
Therefore, the required answer is 0,5V, 0,-5V.
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Note:- The correct question could be,
5 V battery with metal wires attached to each end.
The figure shows two wires connected to a battery’s positive and negative terminals. These wires stop short of completing a circuit. Four points are marked on the wires. Point 1 is at the end of the wire connected to the positive terminal. Point 2 is at the negative terminal. Point 3 is at the positive terminal. Point 4 is at the end of the wire connected to the negative terminal.
What are the potential differences ΔV12=V2−V1, ΔV23=V3−V2, ΔV34=V4−V3, and ΔV41=V1−V4?
Enter your answers numerically separated by commas
What are the intercepts of the graphed function?
Answer:
the intercepts of a graph are point at which the graph crosses the axes