A strongman drags a 136kg tire across a field at 1.20m/s2. If there is 746N of friction
between the tire and the ground, how much force does the strongman pull with?

The Sun light is reflected back by earth. On process of reflecting back the sunlight, the lower layer of troposphere absorbs the most sunlight and upper layer absorbs the least sunlight. So when We ascend to troposphere, we move towards the upper layer of troposphere where sunlight is least absorbed and is colder than lower layer where sunlight is most absorbed

  In the troposphere, the temperature generally decreases with altitude. The reason is that the troposphere's gases absorb very little of the incoming solar radiation. Instead, the ground absorbs this radiation and then heats the tropospheric air by conduction and convection.

The current required to generate a magnetic field inside the solenoid is 1.23 A.

The magnetic field produced by a long solenoid can be calculated using the formula B = μ₀nI, where B is the magnetic field, μ₀ is the permeability of free space, n is the number of turns per unit length, and I is the current. Since we are given the desired magnetic field inside the solenoid, we can rearrange the formula to solve for the current as follows:

I = B / (μ₀n)

Substituting the given values, we get:

I = (104 × 4.95 × 10⁻⁵ T) / (4π × 10⁻⁷ T·m/A × 10,000 turns/m)

Simplifying this expression yields:

I ≈ 1.23 A

Therefore, a current of approximately 1.23 amperes is required to generate a magnetic field inside the solenoid that is 104 times stronger than the Earth's magnetic field, near its center.

The complete question is:
What is the current, in amperes, required to generate a magnetic field inside a long, closely wound solenoid with 10,000 turns per meter that is 104 times stronger than the Earth’s magnetic field of 4.95 × 10⁻⁵ T, near its center?

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Given that a sperm whale can accelerate at a rate of 0.100 m/s² when swimming on the ocean's surface, it can travel approximately 24.768 meters.

To determine the distance traveled by the sperm whale, we can use the kinematic equation:

distance = (final velocity² - initial velocity²) / (2 * acceleration)

Substituting the given values into the equation:

distance = (2.44 m/s)² - (1.00 m/s)² / (2 * 0.100 m/s²)

Simplifying the equation:

distance = (5.9536 m²/s² - 1.00 m²/s²) / (2 * 0.100 m/s²)

distance = 4.9536 m²/s² / 0.200 m/s²

distance = 24.768 m

Therefore, the sperm whale will travel approximately 24.768 meters when it starts at a speed of 1.00 m/s and accelerates to a speed of 2.44 m/s.

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When light travels in a certain medium and falls on the surface of another medium a part of it turns back in the same medium This phenomenon is called Reflection.

A wavefront may alter its course at an interface between two different media and return to the first medium, a phenomenon known as reflection. Common examples are the reflection of light, sound, and water waves.

Reflection of light refers to the occurrence where light strikes an item and bounces back off its surface. Examples: using a flat mirror to reflect. by a spherical mirror's reflection. There are essentially two types of reflection that apply to light. While diffuse reflection is caused by rough surfaces that tend to reflect light in all directions, specular reflection is described as light reflected off a smooth surface at a specific angle.

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The momentum of the car is 10,000 kg·m/s

The momentum of an object is calculated by multiplying its mass by its velocity. In this case, the car has a mass of 1000 kg and is moving at a velocity of 10 m/s.

The momentum (p) of the car can be calculated using the formula:

p = mass × velocity

Substituting the given values, we have:

p = 1000 kg × 10 m/s

p = 10,000 kg·m/s

Therefore, the momentum of the car is 10,000 kg·m/s. Momentum is a vector quantity, meaning it has both magnitude and direction. In this case, the direction of the momentum will be the same as the direction of the car's velocity.

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let the bowling ball initially is moving along the x-axis,

The whole process can be represented as,

Before the collision the net kinetic energy of the balls is,

where the values of the variables are given as,

As the value of cos(90) is zero.

Substituting the known values,

The value of the net kinetic energy with the velocity along the y-axis before the collision is,

The velocity of the second ball is at rest in the initial state, thus its value is taken as zero.

After the collision of the balls, the net kinetic energy is,

Negative sign here indicating the direction of the final balls motion will be opposite to the each other.

The values of the variables are given as,

Substituting the known values,

The value final kinetic enegry of the balls with velocity along the y-axis is,

Here 360 degree is used because the pin ball direction is downward of the positive x-axis.

Then by the law of conservation of energy along the y-axis,

Thus, the y component of the final velocity of the bowling ball of mass m1 is 5 meter per second.

Answer:

El equilibrio térmico se alcanzará a los 152ºC.

Explanation:

Dado que un ladrillo de 2kg que se encuentra a 200º c, se sumerge en 5 kg de agua a 32º, para determinar a qué temperatura se alcanza el equilibrio térmico se debe realizar el siguiente cálculo:

2+5 = 7

(200 x 5 + 32 x 2) / 7 = X

1064 / 7 = X

152 = X

Por lo tanto, el equilibrio térmico se alcanzará a los 152ºC.

No mechanical waves cannot travel in a vacuum

Here we are required to determine how the Newtons second law of motion can be algebraically rearranged to solve for acceleration (a).

The correct answer is Choice B: a = F/m

Newton's second law of motion states that the force applied is directly proportional to the rate of change in momentum of the body.

i.e

where (v - u)/t = acceleration, (a)

Therefore, F = ma.

By rearranging; i.e solving for acceleration, (a);

we divide both sides by mass, m

we have;

a = F/m

The algebraic rearrangement to solve for acceleration, (a) is therefore;

a = F/m

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Answer: A gram of gold is worth about $25, so 2 grams or better would be viewed as high-grade for bulk tonnage mining.

Explanation:

i looked it up.

Answer:

Paul found that fast food burgers cause penguins to lose weight.

Explanation:

Answer: A skier’s most important piece of equipment is Ski boots.

Explanation: To find the answer, we need to know about the ski boots.

Thus, we can conclude that, a skier's most important equipment is Ski boots.

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Ski boots are a skier's most essential piece of gear.

We must understand the ski boots in order to determine the solution.

So, it stands to reason that ski boots are a skier's most essential piece of gear.

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Answer:

34.55m/s

Explanation:

Now from Newton's law of motion;

V= U+ a×t

V- final velocity

U- initial velocity = 0m/s

a- acceleration

t- time

Note that a = g/cos53.2°

Now g is acceleration of free fall due to gravity

This is a vertical acceleration since the course of motion is along a plane inclined at 53.2° to the height of the pool.

Also from trigonometry identity

cos 53.2°= vertical component a/ acceleration ( cos a = adjacent/hypothenus)

If we assume g = 9.8m/S2 { a generally given value}

Substituting t = 3.45s as the time of consideration, we have;

V = 0 + (9.8/cos53.2°)×3.45

= -34.55m/s

Note the -ve sign is just telling us this velocity is causing the object to move down.

Hence V = 34.55m/s

Answer:

27.07 m/s

Explanation:

this is the right answer

Firstly its axis of rotation is inclined at 177.36 degrees (compared to 23.5 degrees on Earth). This means that Venus rotates in a retrograde direction from east to west, making the Sun rise in the west and set in the east. Further to this the rotation is very slow: a sidereal day on Venus lasts 243 Earth days.

Answer: its slowing down

Explanation:

The car is slowing down because its on the corner of the track.

If it were to go the same speed the other cars are going while on the straight part of the track it would go off the track therefore the car must slow down to stay in the race

The pickup truck has a changing velocity as it is slowing down. This is because the truck is on the corner of the truck.

An object can change its velocity in a number of different ways as it can slow down, it can speed up, or it can change its direction of motion. A change in the speed, or a change in the direction of motion, or a change in both the speed and direction of motion of the object means that the object has an overall change in velocity.

The pickup truck is slowing down because it is on the corner of the track. If it were to go on with the same speed as the other cars are going in the direction while on the straight path of the track it would go off the track and therefore the car must slow down to stay in the race of vehicles.

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The required potential energy at the bottom of the swing is calculated to be 78.7 J.

The mass of the child is given as m = 20 kg

Length of the rope L = 1.8 m

Angle of the rope from the vertical after pulling is θ = 39°

The swinging motion of the child is shown in the figure in the attachment below.

Let us calculate the potential energy for the child at extreme position with respect to the bottom position,

PE = m g ( L - L cos θ) = 20× 9.81 × 1.8 ( 1 - cos 39°) = 78.7 J

Here, g is acceleration due to gravity

Thus, the potential energy for the child just as she is released, compared with the potential energy at the bottom of the swing is calculated to be 78.7 J.

The given question is incomplete. The complete question is 'A 20 kg child plays on a swing having support ropes that are 1.8 m long. A friend pulls her back until the ropes are 39° from the vertical and releases her from rest.'

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Answer:

12.0 Volt

Explanation:

Step 1: Given data

Resistance of the ohmic dipole (R): 100 Ohm

Intensity of current (I): 120 mA (0.120 A)

Step 2: Calculate the voltage (V) across this chemical dipole

To calculate the voltage across the ohmic dipole, we will use Ohm's law.

I = V/R

V = I × R

V = 0.120 A × 100 Ohm = 12.0 V

In research, a concept that is challenging to measure or define precisely is called a "construct." Constructs are abstract ideas or concepts that are often used in research to represent phenomena that cannot be directly observed, measured, or quantified.

Constructs are often defined by a set of indicators or measures that are used to operationalize the concept and make it measurable. For example, the construct of "intelligence" is challenging to measure directly, but researchers might use measures of IQ, academic achievement, or problem-solving ability as indicators of intelligence.

Constructs are an essential component of research, particularly in the social sciences, where many of the concepts being studied are abstract and difficult to quantify. By defining and operationalizing constructs, researchers can create more precise and rigorous methods for studying these concepts, which can lead to a deeper understanding of the phenomena being studied.

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An object floating on water will float at the same level on the Moon as on Earth, assuming there is a suitable liquid to support the object on the Moon.

This is because the buoyant force, which determines an object's floating level, depends on the displaced liquid's weight and not the gravitational acceleration. The concept of buoyancy is based on Archimedes' principle, which states that the upward buoyant force experienced by a submerged or partially submerged object is equal to the weight of the fluid displaced by the object.

Consider an object floating on water on Earth. The buoyant force acting on the object equals the weight of the water it displaces. The weight of an object depends on both its mass and the gravitational acceleration it experiences. Although the gravitational acceleration on the Moon is 1/6th that on Earth, this change in gravity would not affect the relative floating level of the object.

This is because the buoyant force and the weight of the object would both be affected by the change in gravitational acceleration, resulting in a proportional decrease in both forces. Since these forces remain proportional to each other, the object's floating level would remain the same. In reality, water would not exist in liquid form on the Moon's surface, but the principle of buoyancy still applies in hypothetical situations like this.

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Answer:

F = M ω^2 R     is the centripetal force on the ball

f = 7 / 10 = .70 / sec      revolutions / sec

ω = 2 pi f = 4.40 / sec

ah = F / m = 4.4^2 * 2 = 38.7 m/s^2

horizontal acceleration = 38.7 m/s^2

vertical acceleration = 9.80 m/s^2

a = (38.7^2 + 9.8^2)^1/2 = 39.9 m/s^2    total acceleration

The names the three types of galaxies are: spiral, elliptical, irregular.

A galaxy is a vast collection of stars, solar systems, gas, and dust. Gravity holds a galaxy together. A supermassive black hole also resides in the center of our galaxy, the Milky Way.

You see other stars in the Milky Way as you look up at the stars in the night sky. If it's truly dark and you're distant from any cities or residences with lights, you can even make out the Milky Way's dusty bands tracing a path across the sky.

A few galaxies resemble our own in spiral shape. They have curved arms that give it a pinwheel-like appearance. Others have smooth surfaces and oval shapes. We refer to them as elliptical galaxies. There are galaxies that are neither spirals nor ovals, though. They resemble blobs and have irregular forms. Each of these galaxies emits light that we can see from its stars.

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Galaxies are classified based on their shape. The three types of galaxies are spiral, elliptical, and irregular galaxies.

Galaxies are the biggest group of stars and contain a few million stars to many billions of stars. It is also considered the vast cosmic island made up of stars, dust, and dark matter held together by gravity.

Every star in the night sky is the part of Milky Way galaxy and the solar system is present in this galaxy. The closest galaxy to the Milky Way is the Andromeda galaxy.

Galaxies are classified based on their shape and hence they are elliptical, spiral, and irregular galaxies. Spiral galaxies are galaxies that are spiral in shape and appear as a rotating disk of stars and dust. This galaxy contains lots of dust, gas, and young stars.

Elliptical galaxies are the galaxies that are elliptical in shape. The smallest elliptical galaxies are small as globular clusters and the large elliptical galaxies contain trillions of stars. This galaxy contains old stars and hence the galaxy is yellowish in colour.

The galaxies that have not come under the elliptical and spiral galaxies are called irregular galaxies. The spiral galaxies and elliptical galaxies get deformed by gravity and form irregular galaxies.

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Based on their electron configurations, He, Be, C, and N are predicted to be as follows:

He (Helium) is predicted to be diamagnetic.

Be (Beryllium) is predicted to be diamagnetic.

C (Carbon) is predicted to be diamagnetic.

N (Nitrogen) is predicted to be paramagnetic.

Paramagnetic substances have unpaired electrons in their electron configurations, which can align with an external magnetic field, causing an increase in magnetic susceptibility and an increase in mass reading on a Gouy balance when the field is switched on. Diamagnetic substances, on the other hand, have all their electrons paired and do not exhibit magnetic properties.

He (Helium) has a 1s² electron configuration with all its electrons paired, making it diamagnetic. Be (Beryllium) has a 1s²2s² electron configuration with all its electrons paired, also making it diamagnetic.

C (Carbon) has a 1s²2s²2p² electron configuration with all its electrons paired, making it diamagnetic as well. N (Nitrogen), however, has a 1s²2s²2p³ electron configuration with one unpaired electron in its 2p subshell, making it paramagnetic.

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Answer:

The connection between the two is that potential energy transforms into kinetic energy

Explanation:

We know that potential energy is the energy that is stored within an object while kinetic energy is the energy that is in motion.

Answer:

see below

Explanation:

18.5 m in .46 sec  =  18.5 /.46 m/s  = 40.2 m/s

The apparent molar concentration of potassium iodide when change in boiling point of water is 0.64 M.

Molar focus is the best approach to depicting a solute fixation in an answer. The total number of moles of solute dissolved in a liter of solution, also known as molarity, M = mol/L. All moles estimations are applied to decide the volume of moles in the arrangement that is the molar focus.

Molar concentration is a measure of the concentration of a chemical species, particularly a solute, in a solution in terms of the amount of substance per unit volume of solution. Molar concentration is also known as molarity, amount concentration, or substance concentration. The number of moles per liter, denoted by the SI unit symbol mol/L or mol/dm3, is the most commonly used molarity unit in chemistry. An answer with a grouping of 1 mol/L is supposed to be 1 molar, generally assigned as 1 M.

KI (aq) ⇒ K⁺ (aq) + I⁻ (aq)

ΔT = Kb.m.i

m = ΔT/Kb.i

= 0.65/(0.51)(2)

= 0.64 M.

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In this scenario, the experimenter would observe that the intensity of the reflected ray is reduced to zero when the transmission axis of the polarizer is perpendicular to the surface of the water.

This happens because the reflected ray is polarized in a direction perpendicular to the plane of incidence, and when the transmission axis of the polarizer is also perpendicular to this direction, it blocks the reflected ray completely. The refracted ray, on the other hand, is polarized in a direction parallel to the plane of incidence, so it would not be affected by the polarizer in this orientation.

This phenomenon is known as Brewster's law and can be used to determine the refractive index of the liquid.

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The frictional force exerted by the bullet on the tree is approximately 10,142.49 N

We can calculate the force using the formula: F = K/d

where d is the distance over which the frictional force acts, which in this case is the depth to which the bullet penetrates the tree.

F = (493.57 J)/(0.0486 m)

F = 10,142.49 N

The force that prevents an object from moving when it comes into contact with another object is known as the frictional force. It occurs as a result of objects' surface irregularities, which cause them to resist movement when in contact with one another.

How much frictional power relies upon a few elements, for example, the idea of the surfaces in touch, the power squeezing the items together, and the speed at which they move comparative with one another. In mechanics, engineering, and materials science, among other fields of physics, the frictional force is an essential phenomenon.

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Answer:

The angular velocity is: (2π radians) ⁄ (4.3 sec) = 1.461 rad/sec

The angular displacement is: (1.461 rad/sec)(1 sec) = 1.461 radians

Explanation:

Minimum drag occurs at the point where induced drag and parasite drag are the same. The correct option is C. This is known as the minimum drag point, or the point of minimum drag coefficient. At this point, the total drag of the aircraft is at its lowest.

Induced drag is caused by the generation of lift, which results in the creation of vortices at the wingtips. This drag decreases with increasing airspeed, as the vortices become smaller and less powerful. On the other hand, parasite drag is caused by the friction and turbulence of the airflow over the aircraft's surfaces, and it increases with airspeed. At some point, the reduction in induced drag will be offset by the increase in parasite drag, resulting in the minimum drag point.

At CLmax, the aircraft is producing its maximum lift, which means that induced drag is high. At maximum level airspeed, parasite drag is at its highest. At L/Dmax, the aircraft is at its optimal lift-to-drag ratio, which means that it is flying most efficiently, but this is not necessarily the point of minimum drag.

Understanding the location of the minimum drag point is important for designing and operating aircraft, as it can help to optimize fuel efficiency and reduce operating costs.

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