My favorite Naruto couple fighting together!!!! Remember this?! And remember.........this?!

I cried so hard when he died.

Answer:

Explanation: To solve this problem, we can use the equation for the force on a current-carrying conductor in a magnetic field:

F = I L x B

where F is the force on the conductor, I is the current flowing through the conductor, L is the length of the conductor, and B is the magnetic field strength.

a) Just after the switch is closed, the circuit is completed and a current starts to flow in the bar. The emf of the battery causes a current to flow in the circuit, which is given by Ohm's Law:

I = V / R = 12 / 5 = 2.4 A

The direction of the current is from the battery, through the bar, and back to the battery. Since the magnetic field is directed into the plane, the force on the bar is perpendicular to both the magnetic field and the current. Therefore, the bar experiences a sideways force that pushes it along the rails. The magnitude of the force is given by:

F = I L B = 2.4 x 0.36 x 2.4 = 2.0736 N

The mass of the bar is 0.90 kg, so the acceleration of the bar is:

a = F / m = 2.0736 / 0.90 = 2.304 m/s^2

Therefore, the acceleration of the bar just after the switch is closed is 2.304 m/s^2.

b) When the bar's speed is 2.0 m/s, the force on the bar is still given by:

F = I L B = 2.4 x 0.36 x 2.4 = 2.0736 N

However, now there is an additional force acting on the bar due to its motion through the air. This force is given by:

F_air = -0.5 ρ C_d A v^2

where ρ is the density of air, C_d is the drag coefficient, A is the cross-sectional area of the bar, and v is the speed of the bar. We can estimate the cross-sectional area of the bar as A = 0.01 m^2, and assume that the drag coefficient is C_d = 1. The density of air is ρ = 1.2 kg/m^3.

Substituting the given values, we get:

F_air = -0.5 x 1.2 x 1 x 0.01 x 2^2 = -0.024 N

The negative sign indicates that the air resistance is acting in the opposite direction to the motion of the bar.

The net force on the bar is therefore:

F_net = F + F_air = 2.0736 - 0.024 = 2.0496 N

Using Newton's Second Law, we can calculate the acceleration of the bar:

a = F_net / m = 2.0496 / 0.90 = 2.2778 m/s^2

Therefore, the acceleration of the bar when its speed is 2.0 m/s is 2.2778 m/s^2.

c) The bar's terminal speed is reached when the air resistance force is equal in magnitude and opposite in direction to the force due to the magnetic field. At this point, the net force on the bar is zero, so the acceleration is zero and the bar moves at a constant speed.

Setting F_net = 0, we can solve for the terminal speed:

F + F_air = 0

I L B - 0.5 ρ C_d A v^2 = 0

2.4 x 0.36 x 2.4 - 0.5

ρ C_d A v^2 = 2.0736

v^2 = (2.0736) / (ρ C_d A)

v^2 = (2.0736) / (1.2 x 1 x 0.01)

v^2 = 172.8

v = sqrt(172.8)

v = 13.142 m/s

Therefore, the bar's terminal speed is 13.142 m/s.

The displacement can be zero if starting point and end point of the distance travelled is the same that is the point we started our journey from is the same point we end our journey.

What is displacement?

How it is represented?

Displacement is represented by an arrow between the starting point and end point. That is distance between initial position to final position, here, initial point is the starting point and the final point is the end point.

For example, you start from a point and takes a semi circular path towards the stationary shop which is right in front of the start point you took time of 10 minutes. So the travelled path here will be the distance but if instead of taking that long route of semi circular path, if you take the straight road and reach the shop within 3 minutes, then this shortest travelled path will be the displacement.

How can displacement be zero?

For example, a person while running on a circular track will start running from a point but will end at the same point. Thus, this person will have the distance travelled as the circumference of the track but displacement is zero.

As for another example, if we start our journey from our home to a stationary shop and the shop happens to be close then without any stoppage in between you come back to your home.

In this case also, the starting point is the final point. Hence, no displacement or zero displacement.

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The speed of the sound wave is 660 meters per second.

To calculate the speed of the sound wave, we need to use the formula:
Speed = Frequency x Wavelength
Here, the frequency of the sound wave is given as 880Hz, and the wavelength is given as 0.75. To get the answer, we just need to plug these values into the formula and solve for the speed:
Speed = 880 x 0.75
Speed = 660 meters per second
It's important to note that the speed of sound depends on the medium through which it is traveling. In air, the speed of sound is approximately 343 meters per second at standard temperature and pressure. However, this value can change depending on factors such as temperature, humidity, and altitude.
Understanding the speed of sound is important in various fields, such as music, engineering, and physics. For example, in music, the speed of sound determines the pitch of a note, while in engineering, it can be used to design and optimize acoustic systems. In physics, it's used to study the properties of waves and to explain phenomena such as Doppler effect and sonic booms.

Therefore, the speed of the sound wave is 660 meters per second.

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The higher displacement [highest increase in bare ground from the start position] is caused by Runner A. Runner B traveled the furthest, covering the entire track.

The verb "to displace" refers to the movement or removal of anything. The location of an object is changed, which is the definition of displacement.

Change in quite an object's location in relation to an image plane is known as displacement. For instance, a billiards ball travels from one spot to another because a player strikes it. It is alleged to have moved. A vector quantity with both speed and phase is displacement.

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Explanation:

The electromagnetic spectrum consists of series of waves that are arranged from longest wavelength to shortest.

ANSWER

EXPLANATION

To find the work done in carrying the bag pack, we can apply the formula:

where F = force ; d = distance moved

The force here refers to the weight of the bag pack, given by:

where m = mass; g = acceleration due to gravity

Hence, the work done is:

That is the answer.

The quantity of heat energy that must be transferred to 2.25 kg of brass to raise its temperature from 20 °C to 240 °C is 195030 J

First, we shall list out the given parameters from the question. This is shown below:

The quantity of heat energy that must be transferred can be obtained as follow:

Q = MCΔT

= 2.25 × 394 × 220

= 195030 J

Thus, we can conclude quantity of heat energy that must be transferred is 195030 J

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In physics, the term "thermal expansion" refers to the expansion that takes place when heat is applied to a body. Each molecule in a body has an increased kinetic energy when it is heated. Molecular collisions between molecules happen more frequently as a result of the increase in kinetic energy. Now, when collisions happen, objects with greater kinetic energy than before will create a larger space around them. Practically, this results in growth.

Now, relating it to equation part:

Depending on the force of attraction acting between molecules, each substance has a specific arrangement and packaging. Therefore, the object with less attraction will occupy more space around it while using less kinetic energy than the object with more attraction. Therefore, for various metals, the coefficient of thermal expansion has been established experimentally.

for example: coefficient of thermal expansion of copper is 16.6∗10−6m/mK.

16.6∗10−6m/mK.  That means if you apply 1 kelvin of heat on a copper rod of length 1 m, it will expand 16.6∗10−6  m more.

Expansion ∞ Length Lo (i) Note: ∞ is for proportionality sign.

Suppose an iron rod of 10 m and other of 1 m, obviously the larger one will expand more. (other functions remain same)

Expansion ∞ Change in Temperature - Δ (ii)

The more the temperature the higher kinetic energy the molecules posses. Therefore more expansion.

Therefore, on combining Expansion = α L0 ΔT Here α is the thermal expansion of the material.

Now adding L0 on both sides and taking L0 common on the right side (to get the new length of the rod)

L= L0(1+αΔT)

This is for linear expansion, similarly you can relate for superficial and cubical expansion.

The molecules slow down when solids cool. The solids shrink as a result of the molecules being able to move closer together. When heated, solids expand. Additionally, they undergo a process known as thermal contraction when they are cooled.

Thank you,

Eddie

Answer: 0.50 m/s

Explanation: it’s on khan academy this was the correct answer

An energetic child runs forward and backward. Its motion is shown on the following graph of horizontal position x vs. time t.

What is the instantaneous speed of the child at t = 10 s?

Answer:

Answer: 0.50 m/s

The diameter of the smaller end of the pipe is approximately 0.78 meters.

To determine the diameter of the smaller end of the pipe, we can use the principle of conservation of mass. According to this principle, the mass flow rate of water should remain constant throughout the pipe.

The mass flow rate is given by the equation:
Mass flow rate = density of water * cross-sectional area * velocity

Since the density of the water remains constant, we can write:
Cross-sectional area1 * velocity1 = Cross-sectional area2 * velocity2

Given that the velocity1 is 13 m/s, the diameter1 is 1.2 m, and the velocity2 is 30 m/s, we can solve for the diameter2 using the equation:
(pi * (diameter1/2)^2) * velocity1 = (pi * (diameter2/2)^2) * velocity2

Simplifying the equation:
(1.2/2)^2 * 13 = (diameter2/2)^2 * 30

Calculating the equation:
(0.6)^2 * 13 = (diameter2/2)^2 * 30

0.36 * 13 = (diameter2/2)^2 * 30

4.68 = (diameter2/2)^2 * 30

Dividing both sides by 30:
0.156 = (diameter2/2)^2

Taking the square root of both sides:
0.39 = diameter2/2

Multiplying both sides by 2:
0.78 = diameter2

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The two methods most commonly used to limit the effects of indirectly transmitted x-ray photons are shielding and filtration.

Shielding is the process of placing materials between the x-ray source and the patient that absorb the x-ray photons, thus reducing the amount of radiation that reaches the patient. Common shielding materials include lead, tungsten, and concrete.

Filtration, on the other hand, involves the use of filters to reduce the energy of the x-ray beam by absorbing some of the lower-energy x-ray photons. These filters can be made of materials such as aluminum, copper, or polyethylene.

Both methods are effective at reducing the amount of radiation that reaches the patient and are used in combination to provide the greatest protection.

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Answer:

inverse square relationship

Explanation:

Both the Newton's law of universal gravitation and coulomb's law have their force inversely proportion to the square of the distance between the bodies.

Answer:

1.20Nm

Explanation:

Given data

Force= 53.5N

Perpendicular distance= 2.25cm= 2.25/100= 0.0225m

The expression for the torque is given as

Torque= Force* Perpendicular distance

Torque= 53.5*0.0225

Torque= 1.20Nm

Hence the toque produced is  1.20Nm

The election would be given to the members of the House of Representatives who would be able to select either O'Rourke, or Trump only, because they were the only candidates who received more than 15% of the available electoral votes.

The house of representatives are those that has been given the authority to make and pass federal laws.

They are supposed to handle and mischief during elections that may affect the process on order to ascertain the rightful leader.

From the excerpt given, since a recount of the votes where made and the three parties involved had a miscount, the final decision should be made by the house of representatives.

This is because, the house of representatives has the authority to elect the president from the three presidential candidates that received the highest votes.

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Let the circumference of the circle be 10L.

A moves at 10L/2 = 5L per hour

B moves at 10L/5 = 2L per hour

Therefore it takes 10L/(5L+2L) = 10/7 hours

Answer:Laboratory thermometer

Explanation:

The resistance of the resistor given that the ammeter reads 1 A when the switch is closed is 15 V / 1 A

This law states that the current flowing through a metallic conductor is directly proportional to the voltage provided every physical properties remains constant. It can be written mathematically as:

V = IR

Where

From the question given, the following data were obtained:

We can determine the resistance of the resistor as follow:

V = IR

15 V = 1 A × R

Divide both sides by 1 A

R = 15 V / 1 A

Thus, the resistance of the resistor is 15 V / 1 A

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The input force on the lever of mechanical advantage 9.5, in order for it to lift a rock of 445 N is 46.84 N.

Force can be defined as the product of mass and acceleration.

To calculate the input force on the lever, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the input force on the lever is 46.84 N.

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Explanation:

Total voltage = 9 × 2 = 18v

Resistance = 82 Ω

Ohm's law::

V = IR

18v = 82 Ω × I

18v /82 /Ω = I

18/82 Ampere is the current

Answer: Both static and kinetic coefficients of friction depend on the pair of surfaces in contact. Their values are determined experimentally. For a given pair of surfaces, the coefficient of static friction is larger than the kinetic friction. The coefficient of friction depends on the materials used.

Explanation:

the coefficient of static friction is larger than the kinetic friction.

Answer:

The coefficient of kinetic friction and the coefficient of static friction are both affected by the area of contact between two surfaces in contact. The following is a detailed explanation of how the values of these coefficients are affected by the area of contact.

The coefficient of kinetic friction is defined as the ratio of the force required to maintain a constant velocity between two surfaces in contact to the normal force pressing them together. It is a measure of the resistance to motion between two surfaces in contact. The coefficient of kinetic friction is affected by several factors, including the nature of the surfaces in contact, their roughness, and their temperature. However, the area of contact between two surfaces also plays a crucial role in determining the coefficient of kinetic friction.

The larger the area of contact between two surfaces, the greater the frictional force acting between them. This is because a larger area of contact means that there are more points of interaction between the two surfaces, which leads to a greater number of intermolecular forces acting between them. As a result, it becomes more difficult to maintain a constant velocity between two surfaces with a larger area of contact, and hence, the coefficient of kinetic friction increases.

On the other hand, the coefficient of static friction is defined as the ratio of the maximum force required to initiate motion between two surfaces in contact to the normal force pressing them together. It is a measure of the resistance to motion when an object is at rest on a surface. Like the coefficient of kinetic friction, it is also affected by several factors including surface roughness and temperature. However, unlike the coefficient of kinetic friction, it is not affected significantly by changes in area of contact.

This is because when an object is at rest on a surface, it does not matter how much area it covers on that surface. The maximum force required to initiate motion remains constant regardless of whether an object has a small or large area in contact with another surface. Therefore, changes in area of contact do not significantly affect the coefficient of static friction.

It will take the Hubble Telescope 94,247 seconds or 26.18 hours to complete one full rotation around the Earth.

The Hubble Telescope is in a circular orbit around the Earth at a constant speed of 20 m/s. The distance between the telescope and the center of the Earth is:

300 km + 100 m = 300,100 m.

Orbital period T of the Hubble Telescope = T = 2πr / v

where

In this case, r = 300,100 m and v = 20 m/s, so:

T = 2π(300,100 m) / (20 m/s) = 94247 seconds

Thus, it will take the Hubble Telescope approximately 94,247 seconds, or about 26.18 hours, to complete one full rotation around the Earth.

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Answer:

For a phase change from solid to liquid, the bonds do not break completely and the particles can still slide past each other

Explanation:

I took the quick check

Answer:

1.0 m/s^2

Explanation: happy to help :)

Answer: \(1\ m/s^2\)

Explanation:

Given

Masses of the block are \(m_1=1\ kg\)  and

\(m_2=2\ kg\)

Force applied by \(1\ kg\) block on \(2\ kg\) block is \(2\ N\)

From the free body diagram of \(2\ kg\) block, the net force on

\(\therefore m_2a=2\\\\\Rightarrow 2\times a=2\\\\\Rightarrow a=\dfrac{2}{2}\\\\\Rightarrow a=1\ m/s^2\)

Thus, the acceleration of two blocks is \(1\ m/s^2\)

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Answer:

The value is  \(h = 32.91 \ m\)

Explanation:

From the question we are told that

    The diameter of each wheel is  \(d = 52 \ cm = 0.52 \ m\)

    The mass of the motorcycle is  \(m = 320 \ kg\)

    The rotational kinetic inertia is  \(I = 2.1 \ kg \ m^2\)

    The  mass of the  rider is  \(m_r = 75 \ kg\)

     The  velocity is  \(v = 85 \ km/hr = 23.61 \ m/s\)

      Generally the radius of the wheel is mathematically represented as

      \(r = \frac{d}{2}\)

=>     \(r = \frac{0.52}{2}\)

=>    \(r = 0.26 \ m\)

Generally from the law of energy conservation

     Potential energy  attained  by  system(motorcycle and rider )  =  Kinetic  energy of the system  +  rotational kinetic energy of  both wheels of the motorcycle

=>  \(Mgh = \frac{1}{2} Mv^2 + \frac{1}{2} Iw^2 + \frac{1}{2} Iw^2\)

=>    \(Mgh = \frac{1}{2} * Mv^2 + Iw^2\)

Here  \(w\) is the angular velocity which is mathematically represented as

     \(w = \frac{v }{r }\)

So

    \(Mgh = \frac{1}{2} * Mv^2 + I \frac{v}{r} ^2\)

Here \(M = m_r + m\)

         \(M = 320 + 75\)

          \(M = 395 \ kg\)

\(395 * 9.8 * h = 0.5 * 395 * (23.61)^2 + 2.1 *[\frac{ 23.61}{ 0.26} ] ^2\)

=>   \(h = 32.91 \ m\)

Answer:

24km/h

Explanation:

go it right on ingenuity 2020

Answer:

Explanation:

2.5+*a*t= 14 m/s

2.5+ a*3 =14

a*3 =14-2.5

a = 11.5/3

a=3.8333  m/\(s^{2}\)

Considering the definition of precision and accuracy, the mass readings of the digital balance are accurate but not precise.

Precision as the proximity between the indications or measured values ​​of the same measurand, obtained in repeated measurements, under specified conditions.

Accuracy is defined as the closeness between the measured value and the "true" value of the measurand.

In other words, accuracy is how close a measurement is to the true value, while precision is how close the values ​​of several measurements are to a point.

Precision and accuracy are independent of each other. Thus, the results in the values ​​of a measurement can be precise and not exact (and vice versa).

A set of 500-g masses is placed one at a time on a digital balance during quality control testing. The mass readings are 397 g, 401 g, and 403 g.

In this case, the measurement is accurate, since the results of each individual measurement are quite similar. But the measurements are not exact (not precise) because the results are far from the real value.

In summary, the mass readings of the digital balance are accurate but not precise.

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Using the conversion factor that we have seen in the solution, the value obtained is 40.25 kilometers per hours

To convert miles per hour (mph) to kilometers per hour (kph), you need to multiply the speed value in mph by a conversion factor of 1.61, which is the number of kilometers in one mile.

Given that;

1 miles/hour = 1.61 kilometer per hour

25 miles per hour = 25 * 1.61/1

= 40.25 kilometers per hours

Hence the value that we get is 40.25 kilometers per hours

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The convert unit of  25 miles per hour is equivalent to 40.2335 kilometers per hour

Unit conversion is the process of converting a value expressed in one unit of measurement to another unit of measurement that is equivalent in terms of its value or quantity. This is done by using a conversion factor, which is a numerical factor that relates the two units of measurement.

To convert miles per hour (mph) to kilometers per hour (km/h), we need to multiply the speed in mph by 1.60934, which is the conversion factor from miles to kilometers.

So, to convert 25 mph to km/h:

25 mph × 1.60934 = 40.2335 km/h

Therefore, 25 miles per hour is equivalent to 40.2335 kilometers per hour.

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Answer:(vi^2+d)^2=vf+a^2+2t

Explanation: