In a collision, if two objects are moving in opposite directions, what does that mean for their momentum
values?

The work done by force is negative in the first scenario because the force and displacement are acting in the opposing directions. As the force and displacement are perpendicular in the second condition, there is no work done.

What exactly is a physics "work done"?

The product of a force's component acting in the displacement's vector and its magnitude is known as the work done by the force. Formula. The following formula may be used to calculate work by multiplying force and distance in the direction of the force. Unit: W = F d.

What exactly is a work example?

The following situations include work: relocating a table. a door is pulled and pushed. Walking. raising a stone.

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To find the stress in the wire at a height of 3L/4 from its lower end, we need to calculate the force acting on the wire at that point. The force on the wire is equal to the weight of the wire itself and the weight of the object suspended from it. Therefore, non of the option is correct.

The weight of the wire is given by the equation: W = gL, where g is the acceleration due to gravity and L is the length of the wire.

The weight of the object suspended from the wire is given by the equation: W1 = gL1, where L1 is the distance from the point of attachment to the object.

Therefore, the total force acting on the wire at a height of 3L/4 from its lower end is:

F = W + W1 = gL + g(L - 3L/4) = gL + 3gL/4 - 3gL/4 = gL

The stress in the wire is given by the equation: stress = F/S, where S is the cross-sectional area of the wire.

Substituting the values for F and S, we get:

stress = (gL)/S

Therefore, the stress in the wire at a height of 3L/4 from its lower end is (gL)/S.

None of the given options match this result, so the correct answer is not among the choices provided.

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The Galaxy Milky Way is 100 million times bigger than the solar planetary System. Hence, on a 1-to-10 billion scale, The Galaxy Milky Way is about 100,000 light-years across while the solar system is 1.9 light-years across.

The Solar Planetary System is a system that is gravitationally bound. It includes the Sun and the planets that orbit it directly or indirectly. The biggest of the objects that orbit the Sun directly are the 8 planets, with the dwarf planets and small Solar System bodies making up the most. Natural satellites orbit the Sun indirectly. Since it lacks a definite limit, determining the extent of the Solar planetary System is difficult. The size of the solar system is [tex]10^{10}[/tex]  km.

A galaxy is a gravitationally bound set of stars, dust, and hydrogen. Galaxies can be seen all over the world, and their sizes differ tremendously. Supermassive black holes are believed to exist at the cores of almost all large galaxies. Lenticular galaxies, irregular galaxies, Spiral galaxies, and elliptical galaxies are the four primary groups of galaxies. The size of a galaxy is [tex]10^{18}[/tex]  km.

The result obtained by comparing Milky Way's size to the Solar planetary System is, the Galaxy Milky Way is 100 million times bigger than the solar planetary System.

It is calculated by:

Size of a galaxy= 1,000,000,000,000,000,000 ([tex]10^{18}[/tex] ) km

Solar planetary system’s Size = 10,000,000,000 ([tex]10^{10}[/tex] ) km

Thus,

([tex]10^{18}[/tex] km / [tex]10^{10}[/tex] km) = [tex]10^{8}[/tex]

Hence,

           The Galaxy Milky Way is 100 million times bigger than the solar planetary System. Hence, on a 1-to-10 billion scale, The Galaxy Milky Way is about 100,000 light-years across while the solar system is 1.9 light-years across.

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Objects such as the great nebula in andromeda were once called extragalactic nebulae. it is now realized that other galaxies much like our own.

A nebula is a distinctively luminous region of the interstellar medium, which may be made up of cosmic dust, neutral, neutrally ionised, or molecular hydrogen. Nebulae are frequently areas where stars are being formed, as seen in the Eagle Nebula's "Pillars of Creation."

The gas, dust, and other material formations in these areas "clump" together to form denser regions, which draw in more matter and finally reach a density where stars can form. Planets and other planetary system objects are then supposed to be formed from the leftover material.

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Yes, the pivot point (i.e., the triangle in the diagram upon which the ruler balances) exert a force on the ruler. No, it does not exert a nonzero torque about the pivot.

Pivot point is that point where an object rotates around. Sometimes, it is called the fulcrum or rotational axis.

A lever has a rigid bar that is able to pivot at one point and this point of rotation is known as the fulcrum. Force is applied at some point away from the fulcrum.

Torque is a measure of how much force acting on the object causes that object to rotate. The object rotates about an axis, which is called as the pivot point.

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The type of observation that astronomers can use to measure the composition of extrasolar planet atmospheres : comparisons of a star's spectrum when planet is in transit versus when it is eclipsed.

Several planets outside the Solar System called exoplanets have been observed to have atmospheres. At the present , most atmosphere detections are of hot Jupiter or Neptune that orbit very close to their star and therefore have heated and extended atmospheres.

As a transiting extrasolar planet passes in front of its host star, one can observe the exoplanet's atmosphere as it is backlit by the star. Additional atmospheric observations can also be made by watching as exoplanet disappears and reappears from behind the star.

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Answer:

F = Δp / Δt    ⇒  t = Δp / F  (To get the time of contact, we divide the change in momentum by the applied force)

Since the book was stationary before we pushed it, the initial momentum is 0. Hence the change in momentum will just be the value of the final momentum.

Δp = mv

t = mv / F = (0.8 kg * 2 m/s) / 20 N = 0.08 s

Explanation:

There wouldn't be any light and dark phases if the axis were adjusted so that it was absolutely upright. Since winter will usually prevail in the Southern Hemisphere, this alteration would not be unexpected on Earth.

In planar geometry, an angle is a shape made up of two rays or lines that share an endpoint. The common terminal of two rays is known as the vertex, and the two rays are referred to as sides of an angle. The Latin word "angulus," which means "corner," is the basis of the English name "angle." In Euclidean geometry, an angle is a shape composed of two rays, referred to as the angle's sides and vertices, respectively, and having a common terminus. Two rays can form angles in the plane where they are positioned.

One can measure and calculate angles in terms of degrees with a protractor. The black arrow in the figure below, for instance, uses a protractor to point to 100°, crossing 90°. Consequently, the angle has a size of 100°.

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The current in a circuit if the voltage applied to a load is 492 volts is 5.52 A.

Current is the rate of flow of electric charge around an electrical circuit. It is measured in amperes (A). Current can be calculated by dividing the voltage (V) by the resistance (R) of a circuit, according to the formula I = V/R.

Calculate the total resistance of the two series-connected resistive heating elements:

R = (250 V) / (2.8 kW) = 89.29 Ω

Calculate the current in the circuit using Ohm's Law:

I = (V) / (R) = (492 V) / (89.29 Ω) = 5.52 A

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The gravitational force exerted on a 50 kg mass on Jupiter's surface is 1.30×[tex]10^{3[/tex] N. Acceleration due to gravity on Jupiter is 2.23 times that of the earth.

Gravitational force is due to mass in an object. This is an attractional force with which all objects are attracting each other. All heavenly bodies have great mass. They attract each other and also if an object is reaching in their gravitational pull.

Force of gravity is calculated using the formula

F = G m1. m2/ [tex]r^{2}[/tex]

We are given mass of Jupiter and radius in terms of earth mass and radius.

volume of earth = 4/3 π[tex]r^{3[/tex]

Volume of Jupiter= 1323 × volume of earth

4/3 π[tex]R^{3[/tex] = 4/3 π[tex]r^{3[/tex] × 1323

R = r [tex]\sqrt[3]{1323}[/tex] =10.97 r

So, Gravity force on Jupiter = G 50 × 318 M/10.97 ×10.97[tex]r^{2}[/tex]

                                             =  50 ×5.97×[tex]10^{24[/tex]÷ 10.97×10.97×6.37×[tex]10^{6[/tex]

after calculation we get the value 1.30×[tex]10^{3[/tex] N

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If light moves through an optical medium at a speed of 2.5 x 108 m/s, the media's refractive index is 1.2.

The material's refractive index (n) may be defined as -

Refractive Index (n) = Light's speed in a vacuum (C) divided by its light speed in a medium (V)

Therefore, n = C/V  

Given that the speed of light in the medium is V=2.5×10⁻⁸m/s

and the speed of light in the vacuum is C=3.0×10⁻⁸m/s

Therefore, the equation gives us n = C/V

n=3.0×10⁻⁸m/s÷2.5×10⁻⁸m/s,

which equals n=1.2 (Refractive index of the medium).

Refractive index: The refractive index, sometimes called the refraction index in optics, is a dimensionless quantity that describes how efficiently an optical material bends light.

Light: light is the organic substance that activates vision and makes things visible

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A large, moving truck crashes into a small parked car. How do the magnitudes of the impulses and the forces on each vehicle compare during the collision: A The truck receives more force but less impulse.

In physics, value is defined really as “distance or amount.” It depicts absolutely the relative course or length wherein an item actions within the experience of movement. it's far used to specify the scale or scope of something. In physics, value commonly refers to distance or quantity.

Magnitudes are the scale of something. for example, in the case of speed, a vehicle is moving faster than a bike. in this instance, the importance of the speed of the auto is higher than that of the bike. It tells the route or size that is absolute or relative in which an item travels in the experience of motion.

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During an extreme emergency, our body must be in fight or flight mode. There are three stages of stress response during an emergency. They are alarm, resistance, and fatigue.

Alarm is the first stage among the 3 stages in the stress response system. In alarm stage, the body and mind go on high alert. It is sometimes called the "fight or flight response". It prepares the body to either go for defending itself or to flee from a threat.

When you perceive a situation or event to be a threat, your body begins a stress response. The nervous system and the endocrine system are active during the body's response to stressors. This response is involuntary or automatic and happen in three stages.

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Answer: Independent variable

Explanation: i think

Answer:

6600 N

Explanation:

[tex]F=\frac{mv^{2} }{r} \\\\F=\frac{4400*6^{2} }{24}\\ \\F=6600 N[/tex]

The maximum voltage across the capacitor is 2.1 * 10⁻² V and the initial energy in the capacitor is 7.042 * 10⁻⁶ J.

In the L-C oscillation, energy is transferred between capacitor and inductor with a certain periodicity.

Given that, Inductance L = 65 * 10⁻³ h

Capacitance C = 300 * 10⁻⁴ F

Initial charge q = 6.5 * 10⁻⁴ C

We know that,

1/2 q²/C + 1/2 L² = 1/2 C* v₀²

From the above equation, we can write v₀ = q/C

Substituting the values in the above equation, we get

v₀ = q/C = (6.5 * 10⁻⁴) / (300 * 10⁻⁴) = 0.021 V = 2.1 * 10⁻² V

The formula to calculate initial energy in the capacitor is 1/2* q²/C

where q is charge and C is capacitance

E = 1/2 * q²/C = (6.5 * 10⁻⁴)²/ 2 * (300 * 10⁻⁴)

⇒ (42.25 * 10⁻⁸)/ (6 * 10⁻²)

⇒ 7.042 * 10⁻⁶ J

Thus, maximum voltage across the capacitor is 2.1 * 10⁻² V and the initial energy in the capacitor is 7.042 * 10⁻⁶ J.

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Answer: tbh I think it’s C I did research and says similar about it

Explanation:

The claim that metals are superior to non-metals in terms of heat and electrical conductivity is true.

Electrochemistry is the study of chemical processes that move electrons. It deals with the interactions between electromagnetic oil and power transformation. Example: The investigation of electrochemical cells is a part of electrochemistry. It involves cells that convert energy into electrical energy.

Electrochemistry has many common applications in daily life. All sorts are batteries, among them those that power lamps, calculators, and automobiles, primarily generate electricity through biochemical reactions. Plating objects with decorative metals like gold or chromium requires electricity.

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The minimum accelerating potential difference (magnitude) that would be required will be 62 kV.

Charged particles, such protons or electrons, are accelerated by particle accelerators to almost the speed of light. They then strike a target or additional particles with those fragments. According to Albert Einstein's special theory of relativity, the relativity of time prevents electrons from going faster than the speed of light when deciding whether they can do so.

Given, wavelength (λ) = 0.0220 nm = 0.22×10∧-10 m = 0.22 A°

λ = hc/eV

V = 12400/λ

V = 12400/0.22

V = 62000 V

V = 62 kV

The minimum accelerating potential difference (magnitude) that would be required to produce kV will be 62 kV.

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The complete question is,

An electron is accelerated toward a target. Find the minimum accelerating potential difference (magnitude) that would be required to produce kV. Assume the electron is initially at rest before accelerating toward the target.) wavelength of 0.0220 nm when the electron strikes the target. (Enter your answer in an x-ray with a kV.

Answer:

The coefficient of kinetic friction between the crate and the floor can be calculated using the formula μ = Ff / N, where Ff is the frictional force, N is the normal force, and μ is the coefficient of kinetic friction.

In this case, the normal force is equal to the weight of the crate, which is 24 kg * 9.8 m/s2 = 235.2 N. The frictional force can be calculated using the formula Ff = μ * N, where μ is the coefficient of kinetic friction and N is the normal force.

If we substitute the values for N and Ff into the formula for the coefficient of kinetic friction, we get:μ = 53 N / 235.2 N = 0.225

Therefore, the coefficient of kinetic friction between the crate and the floor is 0.225.

The vertical impulse by the lift force during this time is 4.15 by minutes for Newton second.

We have a demon That there is a force of 52 down cause of 15. Right? This is what we have you in the questions and acting on the bill. Be both masked by Graham of Mars five g. No. In the meantime. And travelers given that the time and develop acting on this fourth, you should humanists. But we need to find the impulse England's. They seem to not advise you actually. This is what we need to find. So we know that false change in momentum much time. So basically impulses change momentum, but you find impulses changing moment also jay so G is false in campaign so we can put forth here. The forces to do time 59 1 dime. That's Spanish for -5. This was with 15 to 10 days to four minutes, five Newton and two times three seconds Volunteers. They will get 15 into 10 days to the R -4. 15 10 by minus for Newton's second.

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The reason behind action and reaction forces not balance each other out is d)because the action force acts on the carriage, while the reaction force acts on the horse. So, correct option is d.

Forces generally act two by two, which are known as activity and response forces.

The activity force is the power applied to an article by the first activity, and the response force is an equivalent power applied by the item the other way.

A power that is applied to an item is alluded to as an activity force. A response force is the consequence of an inverse heading activity force.

Newton's third law of motion tends to these two forces, alluded to as activity and response powers.

The depicted activity and response powers don't adjust each other out in light of the fact that the activity force follows up on the carriage and the response force follows up on the pony.

Hence, correct option is d.

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(Complete question) is:

A horse pulls on a carriage. By Newton's third law, the carriage pulls back on the horse with equal force. Why do the action and reaction forces just described not balance each other out?

A.

because this is not an action--reaction pair

B.

because action and reaction forces are not equal in magnitude in this case

C.

because action and reaction forces act in the same direction in this case

D.

because the action force acts on the carriage, while the reaction force acts on the horse

So, the only forces acting on the riders are the normal force and the force of gravity (the force of the seat pushing up on the rider). While the normal force is always pointed perpendicular to the automobile seat.

The size of this force is determined by the mass of the each item and the separation of their centers. According to mathematics, the gravity's force is proportional to the square of the distance between both the objects and directly related to the masses of the items.

There are just two factors that matter when discussing the gravitational force between two objects: mass and distance. The squared of the distance of two things has an inverse relationship with the force of gravity, which relies directly on the mass of the two items.

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The wavelength of WFNX’s radio waves with the given speed and frequency is 2.95m.

Wavelength can be defined as the distance between two successive crests or throughs of a wave.

The wavelength of WFNX’s radio waves with the given speed and frequency is 2.95m.

Given data in the question;

Speed of wave; c= 3×10^8

Frequency of wave; 1.017×10^8

wavelength; ?

To determine the wavelength of the radio wave, we use the expression for the relations between wavelength, frequency and speed.

C\f

Where  is wavelength, f is frequency and c is the speed.

We substitute our given values into the equation

=2.95

Therefore, the wavelength of WFNX’s radio waves with the given speed and frequency is 2.95m.

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Answer:

D

Explanation:

More pressure pushes more gas into the solvent

   think about the opposite when you open a soda and decrease the pressure....the gas comes out of solution....

Each of the vehicle's six wheels would have a wheel speed sensor, but there would only be four modulators in the six-in/four-out system.

Anti-lock braking systems (ABS) help you manoeuvre in an emergency by restoring traction to your tyres. What It Does: Assists in stopping wheel locking so that the driver may steer to safety. What It Isn't Able To Do The stopping distance might not be lowered, and it's okay if the pedal wobbles or pushes back.

By keeping the brakes from locking, ABS gives the driver better steering control while braking. ABS rarely activates, unless you reside in a state with lots of snow and ice. It groans and rattles when it does. Many motorists claim that they feel as though their brakes had failed.

The main drawback of ABS brakes is the additional expense that it adds to the base price of a vehicle. Additionally, maintenance expenses increase since each wheel's pricey sensors might be expensive to replace if they become out of calibration. Anti-lock brakes' primary function is to offer sure-footed braking.

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The kinetic energy multiplies by four times.

Energy is the quantitative quality that, in physics, is transmitted to a physical body or system. Both heat and light are manifestations of energy, as well as how labor is carried out. According to the law of conservation of energy, energy is a resource that can never run out and can only be transformed from one form to another. The joule is the unit used by the SI (International System of Units) to measure energy. The kinetic energy of moving objects, the potential energy of stationary objects, the elastic energy of stationary objects, the chemical energy associated with chemical processes, and many other types of energy are common.

We know, kinetic energy, KE₁ = 1/2.m.v²

When v gets doubled, so

then kinetic energy,

KE₂ = 1/2.m.(2v)²

KE₂= 1/2.m.4v²

KE₂ = 4KE₁

As a result, kinetic energy multiplies by four.

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Answer:

Explanation:

KE=mv(v)/2

KE=2(1.5)(1,5)/2

KE=2.25

Important Formulas:

[tex]KE=.5mv^2[/tex]

__________________________________________________________

[tex]m=2kg[/tex] (measured in kg)

[tex]v=1.5m/s[/tex] (measured in meter per second)

[tex]KE=?[/tex] (measured in joules)

__________________________________________________________

[tex]KE=.5(2)(1.5)^2[/tex]

[tex]\fbox{KE = 2.25J}[/tex]

Answer:

1/ Better Health

2/ Reduce injury posibility

3/ Increase energy level when exercising

4/ Bigger muscle

5/ Prevent disease

Explanation: The training helps you get the five benefits above. There is more benefit, but I think the five above are the most important!