A certain force 1 gives an object an acceleration of 6×10^6 m. Another force F2 gives the same object an acceleration of 15×10^6 m. What is the acceleration of the object if the two forces act on the object at 90°to each other?​

All objects descend toward the Earth's surface with a constant acceleration of g start text, g, end text in the absence of air resistance. g = 9.8 m s 2 g applies to Earth's surface.

Objects that are claimed to be falling freely do not actually experience much air resistance; instead, gravity is the only force acting on them as they fall. Regardless of their mass, all objects will fall with the same rate of acceleration under these circumstances.

The acceleration of a free falling object can be solved using algebra. The acceleration is constant and equal to the gravitational acceleration g, which at sea level on Earth is 9.8 meters per square second.

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Shortage of wood and the abundance of convenient coal deposits and Commercial-minded aristocracy of the great Britain changed the science of forces.

Britain attempted to keep its manufacturing processes a secret, but people came to learn about them and brought the knowledge home with them.

Sometimes they used rowboats to smuggle the machines to nearby nations. Belgium, Switzerland, France, and the states that would become Germany were the first nations after Britain to build factories and railroads. Industrialization proven to require the establishment of a national train network. Switzerland's railroads were built in 1847, Belgium's in 1834, France's in 1842, and Germany's in the 1850s.

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The cube's velocity - both speed and direction - after the collision is  [tex]v=\frac{v_0}{5}[/tex].

What is kinetic energy conservation?

Kinetic energy, which may be seen in the movement of an object, particle, or group of particles, is the energy of motion. Any moving item uses kinetic energy, such as a person walking, a baseball being thrown, a piece of food falling off a table, or a charged particle in an electric field.

From kinetic energy conservation:

[tex]\begin{gathered}\frac{m v_0^2}{2}=\frac{m v^2}{2}+\frac{I \omega^2}{2} \\I=\frac{M d^2}{12}=\frac{2 m d^2}{12}=\frac{m d^2}{6} \\\frac{m v_0^2}{2}=\frac{m v^2}{2}+\frac{m d^2 \omega^2}{12} \\v_0^2=v^2+\frac{d^2 \omega^2}{6} \Longrightarrow(1)\end{gathered}[/tex]

From angular momentum conservation:

[tex]\begin{gathered}\frac{m v d}{2}=I \omega \\\frac{m v_0 d}{2}=\frac{m d^2 \omega}{6} \\v_0=\frac{d \omega}{3} \\d^2 \omega^2=9 v_0^2 \Longrightarrow(2)\end{gathered}[/tex]

Substituting (2) into (1):

[tex]\begin{gathered}v^2=v_0^2-\frac{3 v_0^2}{2} \\v^2=-\frac{v_0^2}{2}\end{gathered}[/tex]

The correct answer is: [tex]v=\frac{v_0}{5}[/tex]

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Electromagnetic waves propagate not only in air and solids but also in vacuum space.

Electromagnetic waves are different from sound waves because they don't need molecules to move. This means that electromagnetic waves can penetrate air solids and even outer space. Both electric and magnetic fields are sinusoidal in-plane electromagnetic waves. As you know, a sine wave has zero mean.

These are transverse waves and do not require a medium to travel. They do not obey the laws of reflection and refraction. Magnets do not require gravity or air. Instead, their power comes from the electromagnetic fields they generate themselves. A type of magnet called an electromagnet requires electricity to function. However, if you can run an electric current in space, it will still work.

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A certain transformer doubles input voltage. if the primary coil draws 10 a of current, then the current in the secondary coil is 5a

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Answer:-(E)

The speed of ball is slower than expected speed due to stretch in length of string. The swing rate, or frequency, of the pendulum is determined by its length. The longer the pendulum, whether it is a string, metal rod or wire, the slower the pendulum swings. Conversely the shorter the pendulum the faster the swing rate.

Mass of rope or ball does not effect speed,time period or frequency.The air resistance has no significant effect on speed of ball.

Frequency is the number of occurrences of a repeating event per unit time.  For clarity, also called temporal frequency, which is different from angular frequency. Frequency is measured in hertz (Hz) and corresponds to one event per second. Duration is the reciprocal of frequency because duration is the time interval between events.

For example, if the heart beats 120 times per minute (2 hertz), the period T (the interval between repeated beats) is 0.5 seconds (60 seconds divided by 120 beats). value). Frequency is an important parameter used in science and engineering to describe the speed of vibrations and vibrational phenomena such as mechanical vibrations, audio signals (sound), radio waves, and light.

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The two planets are similar in size, inclination, structure, composition, and the presence of water on their surfaces. They also have many key differences.

While Earth has 23h 56m and 4 s period of rotation, Mars's period of rotation is about 24 hours and 40 minutes. Mars is inclined on its axis, similar to Earth., It is inclined at 25.19° to its orbital plane.

They are both terrestrial planets. This means that both have a dense metallic core and also an overlying mantle and crust, which is composed of less dense materials (like silicate rock).

Mars also has a surface covered by a mountain range. Ice water exists beneath much of the Martian surface. Radar data and soil samples have confirmed the presence of shallow subsurface water at the middle latitudes as well.

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The amplifier is non-inverting amplifier.

What is amplifier?

A circuit that enlarges a signal is called an amplifier. The idea behind an amplifier is to create an output signal that is a copy of the input signal but with a stronger magnitude.

What is non-inverting amplifier?

An operational amplifier circuit with a non-inverting amplifier has an output voltage that is in phase with the input voltage. The inverting op amp, which generates an output signal that is 180 degrees out of phase, is its complement. Its output and input signal are in phase. It just amplifies the signal without altering its phase. It does not invert the phase of the signal, as its name would imply.

The amplifier is non-inverting amplifier.

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Only 1 area type of vector is necessary as the given surface is flat and the area vector must point either +x or -x-direction only. Option(2) is correct.

According to triangle regulation of vector addition minimal 3 coplanar vectors are had to get 0 resultant. We understand that best triangle is closed determine of minimal facet, Sides of triangle constitute vector, So the minimal range of unequal vectors whose vector sum may be 0 is 3.

Two vectors may have most cost while they're in identical direction, i.e. the perspective among them is 0°. And may have minimal cost while they're simply in contrary direction, i.e. perspective among them is 180°. Polygon described as a closed aircraft determine, having 3 or greater immediately aspects. So, the minimal range of the facet in a polygon is 3. So, a polygon with a minimal range of aspects is known as triangle.

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Correct Question:

For the following surface, what is the minimum number of area vectors would you need to fully describe the area?

The difference in momentum between the runner and truck with different masses and velocities is 2850kgm/s.

Momentum in physics is the tendency of a body to maintain its inertial motion. It is the product of its mass and velocity, or the vector sum of the products of its masses and velocities.

Momentum, denoted by p, can be calculated as follows:

p = mv

According to this question, a 50.0-kg runner moving at a speed of 3.00 m/s and a 3.00×10³-kg truck moving at a speed of only 1.00 m/s.

change in momentum (∆p) = 3000 - 150 = 2850kgm/s

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The significance or understanding of a word or sentence is referred to as semantic. The way a statement in a multi-page report is understood; the semantic significance of the sentence—is an example of semantics.

What is semantics?

Semantics is the study of the significance of language. It could as well be used on entire texts or just a single word.

For instance, despite the fact that "objective" and "final stop" have identical meanings, semantics novices analyze their somewhat different shades of importance.

Example:

1) Sam was tired [ Adj. Description]

2) My interview was yesterday [Adv. Time].

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The magnitude of the amplitude of the ⁸magnetic field in the Electromagnetic wave is 36 x 10⁸ T.

The energy of an electromagnetic wave in terms of electric field is given by,

E = 1/2e₀E²

Where,

e₀ is the permittivity of free space,

E is the the electric field amplitude.

The energy of an electromagnetic wave in terms of magnetic field is given by,

E = B²/2u₀

Where,

u₀ is the permeability of free space,

B is the the Magnetic field amplitude.

Both these energies are equal hence,

We can write,

E/B = √e₀u₀

Putting the standard values of e₀ and u₀ and E,

B = 12 x 3 x 10⁸

B = 36  x 10⁸ T

So, the amplitude of the magnetic field is 36 x 10⁸ T.

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Jan Baptista van Helmont's famous experiment incorrectly showed that the plants produce most of their mass from water.

In physics, mass is used to express inertia, a property common to all matter. In essence, it is the resistance of a mass of matter to changing its course or speed in response to the application of a force. The more mass a body has, the less of a change an applied force makes. Using Planck's constant, the kilogram, the ISU's unit of mass, is equivalent to 6.62607015 1034 joule seconds (SI). One kilogram is multiplied by one square meter per second to produce one joule. Since the second and the meter have already been defined in terms of other physical constants, the kilogram is determined by precise measurements of Planck's constant.

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The Milgram Experiment with Shock By Saul McLeod, 2017 update One of the most well-known experiments on obedience in psychology was conducted by Yale University psychologist Stanley Milgram.

He conducted an experiment that looked at the tension between following orders and one's conscience. Stanley Milgram, a social psychologist at Yale University, conducted the Milgram experiment (or experiments) on compliance to authoritative persons. November 5, 2018 revision. Stanley Milgram, a psychologist, investigated the ideas of submission and authority in a number of research in the 1960s. His studies comprised giving study participants orders to shock an actor in a different room with shocks of increasing voltage; the actor would scream at first and then go silent as the shocks grew stronger.

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The Milky Way's rotation curve provides evidence for dark matter. Here's why. The correct answer is in the image

The rotation curve extends far beyond the disk of the Milky Way. Our galaxy belongs to a cluster of about 54 galaxies, the so-called local group. This map shows the distribution of about three-quarters of the galaxy.

The Milky Way and Andromeda galaxies are the largest and most massive galaxies in the Local Group of galaxies. Evidence for the existence of gravitational dark matter is evident in astronomical observations, from early observations of large movements of galaxies within clusters and of the movement of stars and gas within galaxies.

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Some factors that might determine how hot a wire will get when it conducts electricity is Current, Material and Ambient temperature.

Resistance of the wire: The resistance of a wire determines how easily electricity can flow through it. Wires with higher resistance will tend to get hotter when conducting electricity because they resist the flow of current more than wires with lower resistance.

Current: The amount of current flowing through the wire can also affect how hot it gets. Higher current means more electrons are flowing through the wire, which can cause it to heat up more.

Length and diameter of the wire: The length and diameter of the wire can also affect how hot it gets. Longer wires or wires with a larger diameter will tend to have lower resistance, which means they will conduct electricity more easily and may not get as hot as shorter or thinner wires.

Material: The material of the wire can also play a role in how hot it gets. Different materials have different electrical conductivity and resistance properties, which can affect how hot the wire gets when conducting electricity.

Ambient temperature: The ambient temperature of the environment in which the wire is located can also influence how hot it gets. If the ambient temperature is higher, the wire may heat up more quickly due to increased thermal energy.

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According to estimates, the Night Sky alone contains between ten million and one billion supermassive black holes.

The singularity, the outside and inner event horizons, and black holes all have three "layers." A black wall's event horizon is the area surrounding its mouth beyond which light cannot travel. A particle cannot depart the event horizon once it has done so.

Black holes are numerous, but there is no need to be alarmed because they will not eat the Earth or the entire universe. The possibility of Earth ever being absorbed by a black storm is utterly remote. This is because their gravitational influence is less powerful at a distance.

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The small bodies in the solar system include comets, asteroids, the objects in the Kuiper Belt and the Oort cloud, small planetary satellites, Triton, Pluto, Charon, and interplanetary dust. As some of these objects are believed to be minimally altered from their state in the young solar nebula from which the planets formed, they may provide insight into planet Earth and the formation and evolution of the solar system.

What are those four bodies ?

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The spot of light hit the bottom of the h = 2.2 m deep pool will hit the bottom at 4.98 m away.

Here ,

height h = 2.2 m

h1 = 1.3 m

d = 2.9 m

let the distance of spot where light hit bottom from side is l

angle of incidence , i  = arctan(2.9/1.3)

i = 65.9 degree

Using Snell's law

1 * sin(i) = 1.33 * sin(r)

1 * sin(65.9) = 1.33 * sin(r)

r = 43.4 degree

Now ,  tan(r) = (l - 2.9)/h

tan(43.4 degree) = (l - 2.9)/2.2

solving for x

l = 4.98 m

the spot Light will hit the bottom at 4.98 m away

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ASDA is found to be very proficient at detecting swirls in a variety of synthetic data with various levels of noise, implying our subsequent scientific results are astute.

Applying ASDA to photospheric observations with a pixel size of 39.2 km sampled by the Solar Optical Telescope on board Hinode suggests a total number of 1.62 × 105 swirls in the photosphere, with an average radius and rotating speed of ∼290 km and <1.0 km s−1, respectively.

Comparisons between swirls detected in Bifrost numerical MHD simulations and both ground-based and space-borne observations suggest that (1) the spatial resolution of data plays a vital role in the total number and radii of swirls detected, and (2) noise introduced by seeing effects could decrease the detection rate of swirls, but has no significant influences in determining their inferred properties.

All results have shown that there is no significant difference in the analyzed properties between counterclockwise or clockwise rotating swirls. About 70% of swirls are located in intergranular lanes.

Therefore, ASDA is found to be very proficient at detecting swirls in a variety of synthetic data with various levels of noise, implying our subsequent scientific results are astute.

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Answer:

When might an ASDS be most useful and why?

Autonomous Spaceport Drone Ships would be helpful when a spacecraft needs to land in the ocean, for example.  These prevent the rocket from being damaged by the water.  These are typically used when a spacecraft doesn’t have enough fuel to reach its planned landing spot.

How do Trappist-E, -F, and -G contrast with Earth?

Trappist-E, -F, and -G are the planets that orbit in the habitable zone.  They all have a high possibility of having water, similar to Earth.  These planets are about the same size as Earth but they have about 100 times more water.

Why is the greenhouse effect significant? Explain your reasoning.

Greenhouse gases is likely what has caused the increase of warmth on our planet (global warming).  People add to these greenhouse gases and they trap heat.  We don’t know exactly what will be the outcome of the rise in these gases, but so far they have largely contributed to global warming.

Do you agree that humans are contributing to greenhouse gas levels? Explain your answer.

Yes, I do agree.  People add to the heat-trapping greenhouse gases, like carbon dioxide, methane, nitrous oxide, and chlorofluorocarbons.  Methane, for example, is increased when landfills are made of coal is mined, both of which are human activities.

When might a rover be useful, and why?

A rover might be useful when we are exploring places that aren’t safe for people.  Another time rovers might be helpful is when we are exploring places that humans literally can’t go to or conduct research on because of what the planet is made out of.  Since a rover isn’t human it can’t experience feelings or get hurt (it can be damaged, but that wouldn’t lose a life) therefore, it’s safer to send a rover at least until we can find out if it’s safe or not.

Explanation:

I had to do this in class

the width of the first-order rainbow on a screen 2.0 m behind the grating is Δy=0.431m

Finding the angle from a diffraction grating with split space d is necessary to get the fringe location ym.

dSinα=mλ

Slit spacing for a grating with N slits or lines per mm is

d=1/N

d=(1/600mm)

d=1.67×10⁻³mm

At a wavelength of 400 nm:

α=Sin⁻¹(mλ/d)

α=13.9°

The first order lowest wavelength fringe is located in the following location on the screen:

y1= Ltanα

y1=.49445m

For 700nm wavelength:

α=Sin⁻¹(mλ/d)

α=24.8°

The first order highest wavelength fringe is located in the following location on the screen:

y2= Ltanα

y2= .99255m

The first order lowest and highest wavelength fringe's difference is

Δy=(0.925595 - 0.49445)m

Δy=0.431m

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The time taken for the shoe to reach the ground is 8.1 seconds.

The time taken for the shoe to reach the ground is known as the time of motion of the shoe.

The value of the time of motion of the shoe is calculate using the following kinematic equation.

h = vt + ¹/₂gt²

where;

The initial vertical velocity of the shoe = 0

The new equation becomes;

h = 0 + ¹/₂gt²

t = √(2h/g)

t = √(2 x 321 / 9.8)

t = 8.1 seconds

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Answer:

Choice E.

Amplitude: [tex]20\; {\rm cm}[/tex].

Frequency: [tex]2\; {\rm Hz}[/tex].

Explanation:

The amplitude of a simple harmonic motion (SHM) is the maximum displacement from equilibrium.

In this question, the equilibrium is in the center of the two extremes. With one extreme at [tex]x = 10\; {\rm cm}[/tex] and the other at [tex]x = 50\; {\rm cm}[/tex], the center will be at [tex](1/2)\, (10 + 50)\; {\rm cm} = 30\; {\rm cm}[/tex].

The maximum displacement will be [tex](50\; {\rm cm} - 30\; {\rm cm}) = 20\; {\rm cm}[/tex] (or equivalently, [tex](30\; {\rm cm} - 10\; {\rm cm}) = 20\; {\rm cm}[/tex].

Frequency measures the number of cycles completed in unit time (e.g., one second.) In one full cycle of an SHM, the oscillator will travel from one extreme to another and then back to the original extreme. In this question:

In other words, one full cycle of this SHM will take [tex]0.25\; {\rm s} + 0.25\; {\rm s} = 0.50\; {\rm s}[/tex]. The period of this SHM will be [tex]0.50\; {\rm s}[/tex]. Hence, the frequency of this SHM will be:

[tex]\begin{aligned} (\text{frequency}) &= \frac{1}{(\text{period})} \\ &= \frac{1}{0.50\; {\rm s}} \\ &= 2\; {\rm Hz}\end{aligned}[/tex].

Radio frequency (RF) is a unit of measurement used to describe the rate of oscillation of electromagnetic radiation spectrum, or electromagnetic radio waves, with frequencies as high as 300 gigahertz (GHz) and as low as 9 kilohertz (kHz).

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if a capacitor is connected across the feedback resistor, the circuit acts as a practical integrated circuit.is FALSE

What is practical integrated?

Because the mental process and learning information are applied, practical and integrated learning is the best type of learning. Because they are actively involved in the learning process, practical and integrated learning encourages students to greatly develop their learning skills.

The practical integrator is also called as lossy integrator as it integrates only frequencies greater than fa (i.e. higher frequencies) effectively. Thus we can have following observations from frequency response of practical integrator

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White Dwarfs are normally approximately the size (diameter) of Earth, Neutron Stars occasionally appear as pulsars, and Black Holes have sizes determined by their Schwarzschild radii. They are all maintained by electron degeneracy pressure.

The leftover cores of extinct stars are known as white dwarfs. White dwarfs with the same mass as the Sun are roughly the same size as the Earth, and electron degeneracy pressure protects them from the crushing effects of gravity.

White dwarfs mostly experience pressure from electron degeneracy, whereas neutron stars predominantly experience pressure from neutron degeneracy. It is the boundary past which nothing or anything can elude.

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The emf induced in the loop at t = 0 is

Part a)

[tex]$$\text { EMF }=14 \times 10^{-3} \mathrm{~V}$$[/tex]

The emf induced in the loop at t = 1.00 s

Part b)

[tex]$$E M F=15.67 \times 10^{-3} \mathrm{~V}$$[/tex]

What is emf induced ?

As we know that magnetic flux through the loop is given as [tex]$\phi=B . A$[/tex]

now we have

[tex]$$\phi=B \pi r^2$$[/tex]

now rate of change in flux is given as

[tex]\frac{d \phi}{d t}=B(2 \pi r) \frac{d r}{d t}$$[/tex]

now we know that

[tex]$$\begin{aligned}& A=\pi r^2 \\& 0.285=\pi r^2 \\& r=0.30 m\end{aligned}$$[/tex]

Now plug in all data

[tex]$$\begin{aligned}& E M F=(0.20) \times 2 \pi \times(0.30) \times(0.037) \\& E M F=14 \times 10^{-3} V\end{aligned}$$[/tex]

Now the radius of the loop after [tex]$t=1 \mathrm{~s}$[/tex]

[tex]$$\begin{aligned}& r_1=r_0+\frac{d r}{d t} \\& r_1=0.30+0.037 \\& r_1=0.337 m\end{aligned}$$[/tex]

Now plug in data in above equation

[tex]$$\begin{aligned}& E M F=(0.20) \times 2 \pi \times(0.337) \times(0.037) \\& E M F=15.67 \times 10^{-3} V\end{aligned}$$[/tex]

Complete question:The loop is in a magnetic field 0.40 T whose direction is perpendicular to the plane of the loop. At t = 0, the loop has area A = 0.285 square m.Suppose the radius of the elastic loop increases at a constant rate, dr/dt = 3.70 cm/s .

A) Determine the emf induced in the loop at t = 0.

B)Determine the emf induced in the loop at t = 1.00 s .

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The motion of the object from 0 to 6 seconds is a linear motion; the displacement of the object is zero between 0 to 2 seconds, afterwards between 2 to 6 seconds, the displacement of the object increased with increase in time of motion.

The motion of an object is described as the change in the position of an object with time.

The motion of an object can occur at;

During the motion of an object at a constant velocity, the acceleration of the object for the time period is zero.

If the motion of the object occurs at uniform velocity, the acceleration of the object will be constant.

In the given graph, we can conclude the following based on the object's motion;

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Spectroscopy is a highly valuable method of astronomical investigation. Astronomers can determine the composition, density, and temperature of celestial bodies by interpreting the light they emit or absorb.

Emission Spectra

- Emission Nebula

- Planetary Nebula

Absorption Spectra

- Titan's Atmosphere

- Sun

Astrophysics is the science that applies the methods and principles of physics and chemistry to the study of celestial bodies and phenomena. As one of the founders of astrophysics put it, astrophysics is about ``determining the nature of celestial bodies, not where they are, not their positions and movements. ”. Stars, galaxies, exoplanets, the interstellar medium, and the cosmic microwave background. Emissions from these objects are examined across all parts of the electromagnetic spectrum, and properties examined include luminosity, density, temperature, and chemical composition. Because astrophysics is such a broad subject, astrophysicists study classical mechanics, electromagnetism, statistical mechanics, thermodynamics, quantum mechanics, relativity, nuclear physics, particle physics, atomic physics, molecular It applies concepts and methods from many fields of physics, such as physics.

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