a particle of mass 250 g moving along the x axis has velocity v x = ( 7.6 x 3 ) m / s with x measured in m. how much work is done on the particle as it moves from x = 0.0 m to x = 2.0 m ?
49 J 75 J 110J 120 250 J 400J

The velocity vs displacement curve will be a parabolic graph and the height attained by object B will be lesser than object A.

Velocity is the change in displacement of an object with the change in time. It is a vector quantity because it has both magnitude and direction. The SI unit of velocity is meter per second (m/s).

u = 0

x₀ = Distance travessed by both the discs

F= constant

f = 0

a) (F-f) = ma

a = F/ m

v² = u² + 20x

v² = 0 + (2F/m)x

v = \(\sqrt{(2f/m)x}\)

v v/s x curve will be similar to parabolic graph of v² = (2f/ m)x

b) Energy would be conserved for both.

Since, velocity gained by both is same as Vi = \(\sqrt{(F/m)Xo}\)

-mgh = 1/2mvf² - 1 mvi² = - 1 mvi²

mgh = 1/2mvi² = FXo/2m  (Since, vf = 0)

So, h = (FXo/ 2mg)

Since, mb > ma

Hb < Ha

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The time taken by Kamal's family to drive on the second day is 6.45 hours.

What is speed?

Speed is defined as the ratio of the time it takes for a body to cross a distance to the time it takes.

The time is calculated as:-

For 4 hours of driving at an average speed of 60 miles per hour, the distance covered is,

d = 60 x 4 = 240miles

Miles remaining for the second day is,

627 - 240 = 387 miles

Time taken to cover 387 miles second day is,

T = 387 / 60 = 6.45 hours

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Answer:

I think it is the third one

Explanation:

Everything about it is flipped

The electromagnets with poles that are reversed from the electromagnet  is according to image C.

A substance which is negative charged at one end and positive charged at another end creating the magnetic field around it.

A bar is a magnet which can attract the particle which are charged. It has two poles North and South.

The electromagnet is find in the electric motor. In the motor, loop made up of conductor is rotated by the effect of magnetic field of permanent magnet.

An electromagnet is a soft metal core made into a magnet by the passage of electric current through a coil surrounding it.

When the poles are reversed, then the direction of current flow is also reversed.

Thus, the correct option is C.

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Answer:

101 N

Explanation:

The force of friction acting on him will be 101.43 N

Kinetic friction is defined as a force that acts between moving surfaces.

F (kinetic friction) = mu * F (normal)

mu =  0.09

mass = 115 kg      

F (kinetic friction) = mu * mg

F (kinetic friction)  =  0.09 * 115  * 9.8

                              = 101.43 N

The force of friction acting on him will be 101.43 N

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The system will undergo simple harmonic motion in the case where the restoring force is directly proportional to the displacement (option b).

In simple harmonic motion, the restoring force acting on the system is directly proportional to the displacement from the equilibrium position. This relationship is given by Hooke's Law: F = -kx, where F is the restoring force, x is the displacement, and k is the spring constant.

Option a (F directly proportional to x²) does not correspond to simple harmonic motion because the force is proportional to the square of the displacement, which does not follow Hooke's Law.

Option c (F directly proportional to \(\frac{1}{x}\)) does not correspond to simple harmonic motion either because the force is inversely proportional to the displacement, which is not consistent with Hooke's Law.

Option d (F directly proportional to sin x) does not represent a linear relationship between the force and displacement. Simple harmonic motion requires a linear relationship, not a trigonometric one.

Therefore, only option b (F directly proportional to x) satisfies the conditions for the system to undergo simple harmonic motion.

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The amount of helium atoms lined up side to side that  would span the diameter of a human hair is: 1.5625*10^6  atoms

To solve this problem the we have to do the conversion of units with the given information.

Information about the problem:

By converting the units of the helium atom's diameter from nm to mm, we have:

d(helium atom)= 0.064 nm * 1 m/1*10^6 mm

d(helium atom)=  6.4*10^-8 mm

To know how many helium atoms lined up side to side would span the diameter of a human hair, we have to do a division as a following:

amount of helium atoms lined up side to side= d(human hair)/d(helium atom)

amount of helium atoms lined up side to side= 0.1 mm/6.4*10^-8 mm

amount of helium atoms lined up side to side= 0.1 mm/6.4*10^-8 mm

amount of helium atoms lined up side to side= 1.5625*10^6

It is the transformation of a value expressed in one unit of measurement into an equivalent value expressed in another unit of measurement of the same nature.

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A substance's density is a measurement of how heavy it is in relation to its size. If immersed in water, an object will float if its density is lower than that of the water, whereas it will sink if its density is higher.

What is a substance's density?

A substance's density is defined as its mass every unit volume (more specifically, the cubic mass density; sometimes known as specific mass). Although the Roman letter D may also be used, the sign most frequently used for dense is (the misspelling Greek letter rho). The formula for density is mass divided by quantity

Why is a substance's density a valuable property?

Because increasing a substance's mass results in an increase in mass rather than density, density is an intense attribute. A homogeneous object has a density that is equal to its whole mass multiplied by its entire volume at all places.

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These grasshopper-related insects generate massive swarms that travel across areas. Since the Pharaohs ruled ancient Egypt, plagues of locusts have destroyed societies and continue to cause devastation now.

Invertebrates (animals without a backbone) have a hard exterior covering called an exoskeleton. The head, thorax, and abdomen make up an insect's three-part body. The majority of mature insects also have wings, and they all have six legs. Insects come in more than a million different varieties.

Ants are the most common bug in the world, which should not be surprising. There are around 10,000 species of these colonial hymenopterans, with an estimated population size of 10–100 trillion individuals worldwide.

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Answer/Explanation:

Rubber is an insulator, meaning it doesn't conduct electricity well. Rubber is a very poor conductor of electricity.

The glass rod, however, is being rubbed with fur which makes the glass rod lose its electrons, leaving it to be only positively charged. The electrons get stripped away and remain on the fur.

Answer:

Explanation:

The correct option of the given question will be option © that is frequency changes.

According to the Doppler Effect, when source is moving towards the observer then the frequency increases and when the source is moving away from the observer then the frequency decreases, but the magnitude of the amplitude in both the cases will remain same. Whereas the speed of sound waves will remain constant as it was earlier. According to this effect, when there is a relative motion between the source and the observer then there will be the change in the frequency.

So, the correct answer will be that the frequency changes.

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If the current i(t) in the circuit at time t after the switch is closed  in terms of q0 , l , c the differential equation will be V(t) = (q0/C) × e^(−t/RC )

The equation for V(t) would be V(t)=E(RC)(dV(t)/dt) if a battery with EMF E was present in the circuit. With respect to V(t), this differential equation is no longer homogenous. But it can be resolved by simply substituting Vb(t)=V(t)E. This substitution has the effect of removing the E term and producing an equation for Vb(t) that is the same as the equation you solved for V(t). When a battery is supplied, the capacitor's initial condition is typically that it is completely discharged at time t=0.

In these circumstances, the solution will appear as V(t)=E(1et/(RC)) Since the voltage across the capacitor is zero at time t=0 according to this solution, is 0 at time t=0 since the capacitor wasn't charged at that point, and it climbs asymptotically to E.

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Velocity is the speed as well as direction of motion of an object. In other words, one can say that the velocity is the rate of change of position of an object.

Velocity is the dimensional speed of a moving artifact as an inkling of its rate of change in position as observed from a specific frame of reference and measured by a specific time standard.

Speed is the rate at which an object moves along a path in time, whereas velocity is the rate and direction of movement. In other words, velocity is a vector, whereas speed is a scalar value.

The velocity of an object is its speed as well as its direction of motion. In other words, velocity is the rate at which an object's position changes.

Thus, this way, the velocity and position of object relates with each other.

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The magnetic field at point P is μI/2(1/R₁ -1/R₂)(Ф/2π). The magnetic dipole moment of the loop is (πR₁²- πR₂²)Ф/2π and, the magnetic field of the loop at Ф = 2π is μI/2(1/R₁ -1/R₂).

Given information,

Radius, R₁ and R₂

Ф = 2π

a) To calculate, the magnetic field at point P

B = μI/2(1/R₁ -1/R₂)(Ф/2π)

The direction of the magnetic field is outside the page. If the current direction is reversed, the direction of the magnetic field will be inside the page.

b)  The magnetic dipole moment of the loop,

A = (πR₁²- πR₂²)Ф/2π

c)  at Ф = 2π, the magnetic field of the loop is,

B = μI/2(1/R₁ -1/R₂)

The magnetic field at the loop of the wire,

B = μI/2R

Hence,  the magnetic field of the loop is B = μI/2(1/R₁ -1/R₂).

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Answer:

Give me some time okkkk

For a high-speed connection between two buildings, the type of wiring that should be used is fiber optic cable. Fiber optic cable is the most reliable and efficient way to transmit data over long distances at high speeds.

It uses light to transmit data instead of electrical signals, which means it is not affected by electromagnetic interference that can cause interruptions in transmission.
Fiber optic cable also has a much higher bandwidth than traditional copper wiring, which means it can handle more data at once. This is especially important for businesses that need to transfer large files or stream video across their network.
When installing fiber optic cable between two buildings, it is important to consider factors such as distance, the amount of data that will be transmitted, and the required level of security. A professional installer should be consulted to ensure that the cable is installed correctly and meets the specific needs of the business.
Overall, fiber optic cable is the best choice for a high-speed connection between two buildings due to its reliability, efficiency, and high bandwidth.

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Answer:

Air does, in fact, have weight, and here's a simple way you can prove it. You'll need two identical balloons, a string, and a dowel. Attach the uninflated balloons to either end of the dowel. Attach the string to the center of the dowel and then hang it from something.

Explanation:

Answer:

Short

Explanation:

I took the same test

The type of circuit when there is a direct connection lies between two-points should be a short circuit.

It is not the normal condition with respect to an electric circult where the electric current should be flow via the non-intended, also there is short pathway rather following the circuit.

Moreover, there should be a direct linked between the two points in the circuit that supposed to be directly linked.

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46.6666 that is the mass number

Explanation:

14 divided 3.0

Answer:

Conduction mode

Explanation:

\(.\)

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.

According to the law of conservation of energy, energy can neither be created nor destroyed but is transformed from one form to another.

1) The statement that is true about the magnets involved is that; "kinetic energy and velocity are at zero when the magnets are held apart, and both increase rapidly when they are released and move together. Energy stored in the magnetic field decreases."

2) In the second question, the statement that is correct about the energies of the system is that the energy stored in the system is converted to kinetic energy.

3) When a magnet is moved close to a rubber band, the energy stored in the magnetic field does not change.

4) In the fourth question, some of the energy stored is converted into kinetic, thermal, and gravitational energy.

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Answer:the correct answer is: the energy stored in the system is converted to kinetic, thermal and sound energy

Explanation:

Answer:

B:0

F:1.33

Explanation:

velocity of B is 0 m/s

you can refer to the graph

acceleration of F =slope of F

4/3=1.33 m/s^2

1]F1*D1=F2*D2

10N×2m=5N*3m

20N=15Nm

The seesaw will turn anti clock wise.

2]

F1*D1=F2*D2

3N*4m=2N*6m

12Nm=12Nm

It will neither rotate toward anti clock wise nor clock wise

Answer:

Explanation:

The centripetal acceleration:

aₙ = F /m = 125 /19 ≈ 6.6 m/s²

The momentum flow rate through the pipe carrying liquid ammonia is 1 × \(10^6\) kg·m/s.

The flow rate of momentum (Ṁ) through the pipe can be calculated by multiplying the mass flow rate (ṁ) by the velocity (v). The speed can be determined using the equation v = ṁ / (ρA), where ρ is the density of the liquid ammonia and A is the pipe's cross-sectional area.

Given:

ṁ = 100 kg/s

A = 0.01 m²

Assuming the density (ρ) of liquid ammonia is 700 kg/m³, we can calculate the velocity (v):

v = ṁ / (ρA)

v = 100 kg/s / (700 kg/m³ × 0.01 m²)

v = 10000 m/s

Now, we can calculate the flow rate of momentum (Ṁ):

Ṁ = ṁv

Ṁ = 100 kg/s × 10000 m/s

Ṁ = 1 × \(10^6\) kg·m/s

Therefore, the momentum flow rate through the pipe is 1 × \(10^6\) kg·m/s.

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Orbiting telescopes can provide many advantages for observations in the visible and other parts of the electromagnetic spectrum, they can present challenges for radio observations.

Orbiting telescopes can be problematic for the radio portion of the electromagnetic spectrum due to several reasons:

1. Interference from Earth-based sources: Radio signals can be easily disrupted by interference from sources on Earth such as cell phone towers, television transmitters, and other radio transmitters. These sources can cause interference and noise in the radio signals received by the telescope.

2. Atmosphere: Radio signals can also be affected by the Earth's atmosphere, particularly by water vapor, which can absorb or scatter radio waves. Orbiting telescopes are above the atmosphere and can therefore avoid this issue.

3. Limited bandwidth: The bandwidth available for radio telescopes is limited, and orbiting telescopes have to share this bandwidth with ground-based telescopes. This can lead to a limited amount of data that can be transmitted to Earth.

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Heat transport (delta Q) reduced by temperature equals the change is entropy (delta S) (T). the environment's and the system's entropy for a particular physical process.

Entropy rises in proportion to temperature. Molecules as well as the frequency of random activity are excited by the addition of more energy to a system. Entropy rises as the gas in a system grows.

Exactly, as directed electric energy is converted to randomly oriented heat energy, entropy rises. Random thermal energy typically has high entropy. An external power supply that is advertised as being 100% effective at converting electrical energy to thermal energy is sold by one business.

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