It is very difficult to generate simple harmonic motion in a real world environment. Explain why this is the case.
I REALLY NEED HELP
Answer:
Simple harmonic motion is difficult to generate since real processes have irreversibilities, which are omitted in the physical model and represented by physical concept of damping.
Explanation:
It is very difficult to generate simple harmonic motion since real processes have irreversibilities that dissipy the mechanical energy within the system (e.g. air viscosity, friction), meaning that a permanent presence of an external load is needed to counteract such damping effects, in contrast with simple harmonic motion, where motion is self-sustained.
What is the kinetic energy of a 4.0 kg cart that is moving at a speed of 0.50 m/s?
Explanation:
K.E = 1/2mv²
K.E = 1/2 x 4 x 0.5²
K.E = 0.5J
solute + solvent = ??
solute + solvent = a solution
I found a really good image for this situation:
The 1.5kg ball is launched straight upward with an initial velocity of 7m/s. What is the maximum height it will reach?
Answer:
h = 2.5 m
Explanation:
Given that,
Mass of a ball, m = 1.5 kg
Initial velocity of the ball, u = 7 m/s
We need to find the maximum height reached by the ball. Let it is be h. Using the conservation of energy to find it such that,
[tex]mgh=\dfrac{1}{2}mu^2\\\\h=\dfrac{u^2}{2g}[/tex]
Put all the values,
[tex]h=\dfrac{7^2}{2\times 9.8}\\\\=2.5\ m[/tex]
So, it will reach to a height of 2.5 m.
A 10 kg ball is falling on the planet Mars. Mars has an acceleration due to gravity of about 4 m/s/s. What is the force of gravity (or weight) of the ball on Mars?
A.6N
B.40N
C.0.4N
D.14N
Answer:
The force of gravity = 40 N
Explanation:
Given that,
The mass of a ball, m = 10 kg
The acceleration due to gravity on the surface of Mars, a = 4 m/s²
We need to find the force of gravity of the ball on Mars. The force of gravity on an object is given by :
F = mg
Substitute all the values,
F = 10 kg × 4 m/s²
F = 40 N
Hence, the correct option is (B).
In an electrical circuit, what happens to the current flowing through the wire if the initial voltage of 18 V is doubled, and the initial resistance of 35 Ohms is reduced by a factor of 4?
ANSWER QUICKLY PLEASE! ITS URGENT!
The current is increased by a factor of 8.
From 18/35 A. to 144/35 A.
The electric current changes from 0.514 ampere to 4.14 ampere, i.e, electric current flow in the circuit increases 8 times.
What is electric current?A stream of charged particles, such as electrons or ions, travelling through an electrical conductor or a vacuum is known as an electric current. The net rate of electric charge flowing through a surface or into a control volume is how it is calculated.
Initial electric current flowing through the circuit = (18 volt ÷ 35 ohms)
= 0.514 ampere.
When the initial voltage of 18 V is doubled, and the initial resistance of 35 Ohms is reduced by a factor of 4, electric current flowing through the circuit will be = (2 × 18 volt )÷ (35 ohms÷4)
= 4.114 ampere.
Hence, electric current changes from 0.514 ampere to 4.14 ampere, i.e., electric current flow in the circuit increases 8 times.
Learn more about electric current here:
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A thin beam of light of wavelength 50 μm (in the infrared portion of the em spectrum) goes through
a thin slit and falls on a screen 3.00 m past the slit. You observe that the first completely dark fringes
occur on the screen at distances of ±8.24 mm from the central bright fringe, and that the central bright
fringe has an intensity of I0 at its center. (a) How wide is the slit? (b) What is the highest order fringe
this scenario is capable of producing? (c) What is the intensity of light at a point on the screen that is
one-quarter of the way from the central bright fringe to the first dark fringe?
Solution :
Given :
Wavelength of the thin beam of light, λ = 50 μm
Distance of the screen from the slit, D = 3.00 m
Width of the fringe, Δy = ±8.24 mm
Therefore, width of the slit is given by :
[tex]$d=\frac{n \lambda D}{\Delta y}$[/tex]
[tex]$=\frac{2 \times 50 \times 10^{-9} \times 3}{2 \times 8.24 \times 10^{-3}}$[/tex]
= 0.000018203 m
= 0.0182 mm
= 0.018 mm
The intensity of light is given by :
[tex]$I=I_0\left(\frac{\sin \beta /2}{\beta/ 2}\right)^2$[/tex] , where [tex]$\beta=\frac{2 \pi D \sin \theta}{\lambda}$[/tex]
[tex]$I=I_0\left(\frac{\sin \frac{\pi d \sin \theta}{\lambda}}{\frac{\pi d \sin \theta}{\lambda}}\right)^2$[/tex]
[tex]$I=I_0\left(\frac{\sin \frac{\pi d y}{D\lambda}}{\frac{\pi d y}{D\lambda}}\right)^2$[/tex]
Now, [tex]$\frac{dy}{D \lambda} = \frac{8.24 \times 10^{-3}\times 0.018 \times 10^{-3}}{4 \times 50\times 10^{-9}\times 4}$[/tex]
= 0.1854
≈ 0.18
[tex]$I=I_0\left(\frac{\sin 0.56}{0.56}\right)^2$[/tex]
[tex]$=I_0 \times 0.81$[/tex]
= 2 x0.81
[tex]$= 1.62 \ W/m^2$[/tex]
pls help
Can humans start to direct their own evolution and take over natural selection? Are we influencing our own evolution?
Answer:
yes they can
Explanation:
sure if they want
An equipoterntial surface that surrounds a + 3.0 pC point charge has a radius of 2.0 cm. What is the potential of this surface?
Answer:
Electric potential = 0.00054 V
Explanation:
We are given;
Charge; q = 3 pC = 3 × 10^(-12) C
Radius; r = 2 cm = 0.02 m
Formula for the electric potential of this surface will be;
V = kqr
Where;
K is a constant = 9 × 10^(9) N⋅m²/C².
Thus;
V = 9 × 10^(9) × 3 × 10^(-12) × 0.02
V = 0.00054 V
PLEASE ANSWER ASAP bbb
Answer:
if one bulb burns out the other bulbs will also turn off because they are connected to each other.
A student does an experiment with a string vibrating at 20 hertz and observes the resonance pattern shown in the
diagram:
What is the speed of the wave on the string in Figure 24-3A?
4.0 m/s
8.0 m/s
20 m/s
100 m/s
Answer:
v = 8.0 m/s
Explanation:
The diagram clearly shows that the string is vibrating in the 5th harmonic. Hence, the length of string in terms o wavelength can be given as:
[tex]L = \frac{5}{2}\lambda\\\\\lambda = \frac{2}{5} L[/tex]
where,
λ = wavelength = ?
L = Length of string = 1 m
Therefore,
[tex]\lambda = \frac{2}{5}(1\ m)\\\\\lambda = 0.4\ m[/tex]
Now, the speed of the wave can be given by the following formula:
[tex]v = f\lambda\\[/tex]
where,
v = speed of wave =?
f = frequency of wave = 20 Hz
Therefore,
[tex]v = (20\ Hz)(0.4\ m)\\v = 8\ m/s\\[/tex]
Hence, the correct answer is:
v = 8.0 m/s
A given wire of resistance 1 ohm
is stretched to double
its length. What will be its new resistance ?
What was the first logical for the ways things moves in the solar system?
Answer:
depends the ancient humans or the start of the solar system
Explanation:
if its the humans the earth was in the middle of everything.
but the beginning of the solar system lets say when earth just formed the orbits where unstable and planet ending impacts happed a lot.
ill do the proto planetary disc too
the disc formed the gas giants first then the rockey planets formed out of the disc
Photos A and B both show the same field of view containing a star-forming molecular cloud. One of the photos was taken in visible light and the other in infrared light. Which one is the visible-light photo, and how do you know?
Hello. You did not present the photos to which the question refers, which makes it impossible for your question to be answered. However, I will try to help you in the best possible way.
Your question informs us that the photos are of a star-forming molecular cloud. The molecular cloud has dust, especially when the star is forming. In this case, we must keep in mind that in photos taken in visible light, the dust is able to appear, especially in space, where this dust would not reflect light, unlike the star in formation. In this case, we can conclude that in the case of the photo taken in visible light, we could see the molecular cloud as a dark spot, due to the dust. However, it would not be possible to view it in a photo taken with infrared light.
pls answer this right I will give you a brainiest.
Answer:
i would pick c
Explanation:
because, w and y it is very bright and bright can be very conductive like it said.
Electromagnetic spectrum, i need help putting them in order. And maybe get a little help understanding this subject
Explanation:
In order from highest to lowest energies the parts of electromagnetic spectrum are named as
Gamma rays,
X-rays,
ultraviolet radiation,
visible light,
infrared radiation,
and radio waves.
Microwaves are a subsections of radio waves. They are used in microwave ovens to heat the food items.
This is expected EM spectrum in field of science.
What is assimilation? Discuss the importance of social assimilation. Discuss immigration and some key challenges that an immigrant might face. What could be some benchmarks through which you can measure immigrant assimilation? What are some challenges that partners in an intercultural marriage may face? What can they do to avoid conflicts and resolve an argument or a disagreement?
Answer:
Assimilation refers to the process by which a person or ethnic group that constitutes a minority people imitates the culture of the majority population and, when the process is complete, completely abandons its own culture. Thus, the original cultural differences disappear and society becomes a monoculture. For example, immigrant groups or colonized indigenous peoples may abandon their culture, either spontaneously or after religious persecution and coercive measures, called assimilation policies.
A number of immigrant groups were assimilated into American society during the 19th century in what is usually described as a cultural melting pot or Americanization. In this case, the adaptation was not one-way, and largely spontaneous.
any help would be appreciated! :)
Answer:
primary voltage/secondary voltage = number of turns on primary coil/number of turns on secondary coil
V1/V2= N1/N2
1.5/5 = 150/N2
0.3 = 150/N2
N2= 150/0.3
N2 = 500
Thanks for joining brainly community!
What is an element?
give ur own response
[tex]\huge{\textbf{\textsf{{\color{pink}{An}}{\blue{sw}}{\pink{er}} {\color{blue}{:}}}}}[/tex]
Elements are one type of atom.
Elements are complete chemical substances which relate to a single entry in the modern periodic table. Elements consist of one kind of atoms only.
Thanks Hope it helpsFour basic forces act on an airplane while in flight: lift, weight, drag, and thrust. These four forces and their directions are indicated below.
Complete question is;
Four basic forces act on an airplane while in flight: lift, weight, drag, and thrust. These four forces and their directions are indicated in the image attached.
If the thrust acting on an airplane is greater than the drag, then
A. The airplane will accelerate backward.
B. The lift will be greater then the weight.
C. The airplane will accelerate forward.
D. The weight will be greater than the lift
Answer:
C. The airplane will accelerate forward.
Explanation:
From the image attached, we can see that the thrust is the forward force responsible for pushing the plane forward while the drag is the one resisting this forward motion.
Thus, if the thrust is greater than the drag, it means the plane will accelerate forwards.
Thus, option C is correct.
explain why fish survive under water when the surface is already frozen
Answer:
ice is a poor conductor of heat and less dense than water. During winter, ice floats and insulates the water under it. Below the frozen layer, the water remains in its liquid state and does not freeze. Also, oxygen is trapped beneath the layer of ice. This makes it possible for aquatic animals to survive during winter.
what is a underwater mountain that rises above sea level called
Answer:
Undersea mountain ranges are mountain ranges that are mostly or entirely underwater, and specifically under the surface of an ocean. If originated from current tectonic forces, they are often referred to as a mid-ocean ridge. In contrast, if formed by past above-water volcanism, they are known as a seamount chain.
Explanation:
Can someone please help me with this
Answer:
B because the earth rotational axis tilt away from the sun.
If a species experiences a helpful mutation, like camouflage, explain how that mutation would help the species to better survive and flourish. Again, be sure to explain how and why that mutation would be helpful.
Help me please I need it fast, I’ll give b if correct!!!
Links = reported
Wrong answer= report (depends if it’s a whole different answer)
Answer:
A helpful mutation like camoflage would immensely help a species survive and flourish. The reason being the appliances of such a mutation. Camoflage is one of the most apllicable of abilities. It can be used as a defense mechanism, to hide in plain sight, it can be used offensively to avoid being seen while hunting and it can even be used as a form of communication between the species. All of these appliances would greatly benefit the species and would most definitely help it survive and flourish.
other quanto
Dalex when
the face
into that one dan
a Explains why fish can
Survive under
Horan
I'm not sure what you were trying to put here
Please help will mark brainliest
Why is the melting of ice a physical change?
A.
It changes the chemical composition of water.
B.
It does not change the chemical composition of water.
C.
It creates new chemical bonds.
D.
It forms new products.
E.
It is an irreversible change that forms new products.
Answer:
b
Explanation:
it melts yes but it's still water [same element] so there fore it's a physical change
Answer:
It does not change the chemical composition of water. Explanation: A physical reaction is defined as the reaction in which a change in shape, size takes place. No new substance gets formed in these reactions.
Explanation:
Hope this helped
in comparing sunspots to other areas of the sun's surface one can say that sunspots are...?
slower in reacting to creating energy
similar in temp
cooler
warmer
Answer:
D. Cooler
Explanation:
The Sun's surface has a temperature ranging from 6 000 Kelvin, thus it is very hot. The radioactive reaction in the core of the Sun is a nuclear fusion reaction. This reaction ensures continuous release of high energy from the surface of the Sun.
But during the reaction, some parts becomes cooler than other parts on its surface. Which is due to the release of high amount of energy into space. The Sun's spot can be found in the cooler part of the Sun.
Answer:
C. Cooler
Explanation:
what do you mean by efficiency of a machine?
Answer:
Efficiency in general means How well an object does with respect to its designated purpose for example a battery with Voltage of 10 volts won't exert 10 volts but slightly less due to internal resistance let's say 8V so efficiency will be 8/10 x100 = 80%
Same thing with a machine/engine If an engine is designed to produce 150 horsepower it won't give you the full energy due to part of the energy being dissipated in form of heat due to friction so let's say 145 hp is produced which is 96% efficiency
The spring to launch a pinball in a pinball machine is compressed 25 cm and has a spring constant of 140 N/m.
a. How much energy is stored in the spring when it is fully compressed?
b. If friction removes 3.75 J of energy while the spring launches, how much energy will the pin ball end up having?
Answer:
I think it is 5.6. This is my answer
Which of the following is an example of potential energy?
A. The plant sitting on the desk
B. The airplane Flying in the air
C. The car driving on the Street
D. The person standing up
Answer:
A
Explanation:
potential energy is energy due to position