A bar magnet is cut into two pieces from the middle as shown in the figure. Mark the poles on these magnets if it is further broken into smaller pieces?

Speed of sound is maximum on solid.

Correct option.

A) steel Solid

First, let's find the equivalent resistance. Since they are in parallel, we can find it as follows:

Now, we can use ohm's law to calculate the current:

Answer:

b.

6 Amps

A concave lens produces a virtual image like the one seen in the diagram (we know is virtual since it is on the same side to the original object), we also see that the image is smaller, and not inverted.

Therefore, the only option that describes this image is C which is virtual.

The magnitude of tension T in string P is 250 N when a constant horizontal force of 250 N pulls the second string.

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Answer:

AM - amplitude modulation

FM - frequency modulation

Answer:

Explanation:

Given:

F₁ = 500 N

F₂ = 1.500 N

____________

L₁ - ?

L₂ - ?

Moment rule:

M₁ = M₂

F₁*L₁ = F₂*L₂

F₂ / F₁ = 1.500 / 500 = 3

L₁ / L₂ = 3

L₁ = 3*L₂

If  L₂ = 0.5 m

then L₁ = 3*0.5 = 1.5 m

We know that

• The mass is m = 30.0 kg.

• The vertical height is h = 10.0 m.

We have to use the conservation of energy theorem, which states that mechanical energy is constant all the time. Also, halfway down means a height of 5.0 m. It's important to know that at the top the total energy is potential, while halfway is distributed as kinetic and potential, the expression below shows this

Then, using the definition of each energy, we have

Now, we use the given values to find the speed.

In this case, we just have to use as the second height of the equation the magnitude 2.5 meters because that's 3/4 of the way down. So, let's use the same process and expression

Given data

*The given distance above the water is s = 8.40 m

*The given initial speed of the Olympic diver is u = 1.2 m/s

*The value of the acceleration due to gravity is a = 9.8 m/s^2

The formula for the diver speed, in m/s, just before she enters the water is given by the equation of motion as

Substitute the known values in the above expression as

Hence, the diver speed, in m/s, just before she enters the water is v = 12.88 m/s

Machine Efficiency = output energy/ input energy

The percent of input work that becomes work done by the machine is called efficiency. The output work is always less as compared to the input work because some of the input work gets used in overcoming friction, therefore the efficiency is always less than 100 percent.

Efficiency do not have units. It is  written as a decimal or as a percentage. Energy efficiency is the use of less amount of energy to perform the same task. Energy-efficient homes and buildings use lesser energy to heat, cool, and run any appliances and energy-efficient manufacturing facilities use lesser energy to produce goods.

Efficiency measures work or energy that can conserved in a process. We can also say that efficiency is about comparing the output of the energy to the input of the energy.

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Given:

The electric field strength is given as,

Here, K is the electrostatic constant.

Putting the values,

Therefore, the electric field strength is 63444.44 N/C.

The correct option is (b)

The outgoing gamma rays are of lower frequency than that of the initial gamma-ray. While investigating the scattering of X-rays, Compton observed that the outgoing rays lose some of their energy in the scattering process and emerge with slightly decreased frequency.

The acceleration of the ball is 21.33m/s²,

We are given that,

The ball fall's from height = d = 0.75m

The final speed of the ball = Vf = 4m/s

So that to know the acceleration of the ball we can calculate by the equation of motion in term of velocity and acceleration i.e. given as,

V = u + at

Where, V is the final velocity , u is the initial velocity , t is the time and a is the acceleration of the object.

t = d/v

t = (0.75m)/(4m/s)

t = 0.1875s

Thus, the value of t, V, and initial velocity is zero putting in equation of motion to get acceleration,

a = (4m/s)/(0.1875s)

a = 21.33m/s²

The acceleration of the ball would be 21.33m/s²

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Answer: The reason why Venus is hotter than Mercury is because it has a thick atmosphere primarily made up of carbon dioxide, which is a greenhouse gas that helps retain the heat from the Sun. In comparison to this, Mercury has almost no atmosphere, so any heat that beats down on the planet isn’t retained.

Explanation: Searched

The magnitude of object's acceleration is 3.26m/s².

The mass of the body is 4.10 lg.

The two forces that are acting on the object are F₁ = -6i + 7.9j newton and F₂ = 6.8i + 5.3j Newton.

We know that the force acting on an object is,

F = Ma

Where,

F is the force acting,

M is the mass of the object and,

a is the acceleration of the object.

As we can see, two forces are acting on the body,

We can simplify the forces in x direction and y direction,

The forces are  F₁ = -6i + 7.9j N and F₂ = 6.8i + 5.3j N.

So, the total force in x-direction,

Fₓ = (-6+6.8)i

Fₓ = 0.8i

Fᵧ = (7.9+5.3)j

Fᵧ = 13.2j

So, the net force Fₙ on the object is Fₙ = (0.8i + 13.2j) N

Now, putting value of force and mass in the formula,

F = Ma

0.8i + 13.2j = 4.1a

a = 0.19i + 3.21j m/s².

The magnitude of acceleration is,

|a| = √[(0.19)²+(3.21)²]

|a| = 0.361 +10.3

|a| = 3.26m/s².

So, the magnitude of acceleration is 3.26m/s².

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Newton's Second Law.

We have the following data, provided in the exercise:

Mass (m) = ?

Force (F) = 13607 N

Acceleration (a) = 2.9 m/s²

To calculate the mass, we solve the following formula:

[tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{F=m*a \ \ < ====Formula \ clear==== > \ \frac{F}{a}=\frac{m*\not{a}}{\not{a}} } \end{gathered}$}}[/tex][tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{\frac{F}{a}=m \ \iff \ Address \ is \ changed \Rightarrow \ m=\frac{F}{a} } \end{gathered}$}}[/tex]

We substitute the data in the clear formula.

[tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{m=\frac{13607 \ N}{2.9 \ \frac{m}{s^{2} } } } \end{gathered}$} }[/tex]

We break down the units of Newton = Kg * m/s².

[tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{m=\frac{13607 \ Kg*\not{\frac{m}{s^{2}} } }{2.9 \not{\frac{m}{s^{2}} } } } \end{gathered}$} }[/tex]

[tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{m=4692.07 \ Kg } \end{gathered}$} }[/tex]

When an object moves in a circular trajectory with a uniform speed, a centripetal force is needed to keep it in that trajectory. In the experiment, the hanging mass is used to keep the tension of the string constant. The tension is equal to the weight of the hanging mass, and it is responsible for keeping the rubber stopper in a circular trajectory.

The centripetal acceleration of a particle in a circular trajectory with radius r and frequency f is:

On the other hand, if the mass of the hanging object is M and the mass of the rubber stopper is m, according to Newton's Second Law of Motion, the relationship between the tension of the string and the centripetal acceleration is:

If we isolate f from that expression, we get a theoretical relationship between the radius and the frequency:

To find the expected value for the frequency for different values of r, replace M=200g, m=15.3g, g=9.81m/s^2 and the different values of r:

On the other hand, we can find the experimental measurements for the frequency depending on the radius using the information provided in the table.

To do so, remember that the frequency is equal to the average number of spins from the three trials over the time.

The experimental values for the frequencies are:

To find the percent deviation from the expected value, use the following formula:

Then, the percent deviations from the expected values are:

Aristotle's rhetorical triangle tells us that effective messages show awareness of ethos, pathos, and logos. The correct answer to the question is option A.

What is Aristotle's rhetorical triangle?

Aristotle taught that a speaker's effective messages show awareness of the ethos, pathos, logos triangle, which expresses the idea that a good argument must be ethically, emotionally, and logically sound.

In summary, Aristotle's rhetorical triangle shows that the Logos, Ethos, and Pathos are very important when giving an effective message.

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We are given the following information.

Seperation between slits: d = 5.0 mm

Wavelength of light: λ = 480 nm

Distance from the plane of slits: D = 3.0 m

We are asked to calculate the separation between the 8th bright fringe and the 3rd dark fringe observed with respect to the central bright fringe.

The position of the 8th bright fringe is given by

The position of the 3rd dark fringe is given by

Finally, the separation between the 8th bright fringe and the 3rd dark fringe is

Therefore, the separation between the eighth bright fringe and the third dark fringe observed with respect to the central bright fringe is 1.584×10⁻³ m.

Answer: A.

It moves away from the normal.

Explanation: ed mentum or plato

For an adiabatic process of gas PV(^r)= Constant, where r = Cp/Cv , Cp, and Cv are constants for a particular gas.

It is an imaginary gas for which the volume occupies by it is negligible, this gas does not exist in a practical situation and the concept of an ideal gas is only the theoretical one.

Universal Gas Equation for the ideal gas,

PV=nRT

By differentiating on both sides: P.dV + V.dP = n.R.dT…. (1)

For the adiabatic process, the expansion or compression of gas occurs at a very fast rate which makes no heat transfer. Therefore, dQ= 0

A/c to First Law of TD: dQ=dU+ dW, implies dU= -dW=-P.dV ….. (2)

But dU= n.Cv. dT …. (3) Combining 2 and 3, we get: n.dT= -P.dV/Cv …..(3)

Using R= Cp-Cv, the gas law gives: from 1 and 3.

n.dT= (P.dV + V.dP)/(Cp-Cv) = -PdV/Cv

On rearranging terms  we get, (dP/P)+((Cp/Cv)*(dV/V))=0

Cp and Cv are constants for a particular gas, hence integrating,

Ln(P)+ r.Ln(V)=constant (replacing Cp/Cv = r or Gamma)

Hence, P.V(^r)= constant is termed an adiabatic equation.

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The average reaction time of Gemma is 0.1564 seconds.

As we know, Gemma is catching the scale and Emily is dropping the scale.

The whole experiment is taking place under gravity, so the acceleration is constant.

As we know, the scale is dropped, it means that the initial velocity of the scale is zero.

We can use the equation of motion,

The equation is,

S = Ut + 1/2at²

Where,

S is the displacement, which is 0.12 m in our case,

U is initial velocity which is 0m/s because the stone is dropped,

t is the time taken, this is equal tot he reaction time here,

a is the acceleration due to gravity whose value is 9.8m/s.

Now, putting all the values,

0.12 = 1/2(9.8)(t)²

t² = 0.24/9.8

t = 0.1564 seconds.

Gemma reacts in 0.1564 seconds to catch the scale.

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Abstract of American Intercontinental University

This paper will compare and contrast three of the 10 main early psychology views. This assignment's three approaches are behavioral, humanistic, and cognitive. Three Early Psychology Perspectives are compared and contrasted. Psychology, like anything else, offers a plethora of theories and methods. One idea may be beneficial to one patient while being ineffective to another. The trick is to discover the optimal method for each patient. The concept that behaviors arise as a result of conditioning is known as behaviorism. This theory does not acknowledge the presence of interior mental factors such as thoughts, feelings, and moods, nor does it take free will into account.

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The given statement 'Gravitation always does negative work' is false.

The work done by the gravitation depends upon the reference level of the system. Therefore, according to reference level it is taken as positive or negative.

If we start an experiment with 191.3 g of a substance, we should be ending with 191.3 g

We know that matter cannot be created out of nothing. So that is why the number of atoms of products must be equal to the number of atoms of reactants. That is why a chemical reaction is written as a balanced reaction equation. This is the law of conservation of mass.

During a combustion reaction or during decomposition reaction, the products mass might seem to be different than that of reactants either higher or lower. This is due to the involvement of environment. So while considering mass environment should also be included.

Therefore, if we start an experiment with 191.3 g of a substance, we should be ending with 191.3 g

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First lets calculate the surface area

Now to know the surface charge density we need the next formula:

But we are missing the amount of charge, we only have the potential

So in this case, we going to apply a different formula

q=5.56*10^-10

The anwer might be -1.8x10-8

Ricardo notices that the canoe moves 46 cm horizontally relative to a pier post during the exchange and the mass is 49 kg.

Mass is defined as a measurement of the fundamental attribute of all stuff, inertia.

Mass is also defined as a physical body's total amount of matter.

As per question,

Let's refer to Ricardo's mass as MR and Carmelita's mass as MC.

Let the two-person system's center of mass, which is believed to be closer to Ricardo, be x meters from the center of the canoe's length L and mass m.

MC(L/2 +x) = mx + MR(L/2-x).

It is derived from the second law of parallel forces, which states that the sum of the moments of mass moving clockwise and counterclockwise is equal.

The canoe's center has now moved twice as far from its initial location.

So, x = 46/2 = 23 cm = 0.23 m

MC = MR (L / 2x) - mx / L / 2 + x

MC = 72 ( 3.2 / 2 - 0.23 ) - 39 x 0.23 / 3.2 / 2 + 0.23

MC = 72 ( 1.6 - 0.23 ) - 39 x 0.23 / 1.6 + 0.23

MC = 72 x 1.37 - 8.97 / 1.83

MC = 98.64 - 8.97 / 1.83

MC = 49 kg

Thus, Ricardo notices that the canoe moves 46 cm horizontally relative to a pier post during the exchange and the mass is 49 kg

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40,840.7 kilometers the space shuttle have to travel to complete one orbit. In terms of a circle, this distance is termed as the circumference of the circle.

The circumference of a circle is the length measured around its edge. The diameter of a circle is the distance from the center to the outside.

Here we need to find the distance of the space shuttle that completed one circle, ie, the circumference of the orbit. The Circumference or distance covered by the space shuttle can be denoted by [tex]C_{SS}[/tex] and can be calculated by application of the below formula,

[tex]C_{SS}[/tex] = 2πr

where r is the radius of earth ie, 6500Km

Therefore, the equation becomes:

[tex]C_{SS}[/tex] = 2×π×r

= 2×π×6500

=40,840.7

So, the kilometer required to travel is 40,847.7Km

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Given:

• Spring constant = 175 N/m

• Energy = 20 J

Let's find by how much it is compressed.

Apply the formula:

Where:

E is the energy = 20 J

k is the sring constant = 175 N/m

x is the compression in meters

Rewrite the formula for x:

Input values and solve for x:

ANSWER:

0.48 m

Answer: B

Explanation:

One of the common units of force is Newtons, N

Recall,

Force = ma

where

m is the mass of the body

a is the acceleration of the body

If acceleration, a = ms^-2 and mass = kg, then

Force = kgms^-2

Also, joule is the unit of work

recall,

work = force x distance = J

If we divide work by distance(meters), it becomes joule/meter

Thus,

jm^-1 is a unit of force

Thus, the option that is not a unit of force is

B. Js^-1

We will have that:

Increasing the mass would increase the gravitational force.