find the net torque on the wheel in the figure below about the axle through o, taking a = 5.00 cm and b = 17.0 cm. (assume that the positive direction is counterclockwise.)

Answer:

Did you ever complete the test?

Explanation:

Answer:

Explanation:

\(Speed = 4m/s\\Time = 2m = 120 secods\\\\Distance = ?\\Distance = Speed \times time \\\\Distance = 4 \times 12\\= 48\: meters\)

The distance covered by the person is 480 meters.

We have a a person who runs at 4 m/s for 2 minutes.

We have to determine how far he had run.

The distance travelled by the body can be given by -

d = v x t

where -

v - velocity of body

t - time for which the body travelled

According to question, we have -

v = 4 m/s

t = 2 minutes = 120 seconds

Therefore, the distance travelled will be -

d = v x t

d = 4 x 120

d = 480 meters

Hence, the distance covered by the person is 480 meters.

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Answer:

The longer the wave, the deeper the wave base - True

The greater the wave height, the deeper the wave base - false

The longer the wave, the faster the wave travels- true

The greater the wave height, the faster the wave travels- false

The faster the wave, the greater the wave height - False

Explanation:

When a wave has a high length it means that the wave base will be deeper.

The longer the wave, the deeper the wave base - True

When the weight height is big , the wave base will be deeper.

The greater the wave height, the deeper the wave base - false

The longer the wave, the faster the wave travels- true

The greater the wave height, the faster the wave travels- false

The faster the wave, the greater the wave height - False

The work done by the gas during the isothermal expansion is approximately -4125.40 J.  The calculation involves considering the gas constant, temperature, and initial and final volumes.

To calculate the work done by the gas during an isothermal expansion, we can use the formula:

W = -nRT ln(Vf/Vi)

Where:

W is the work done

n is the number of moles of the gas

R is the gas constant (8.314 J/(mol K))

T is the temperature in Kelvin

Vf is the final volume

Vi is the initial volume

Given:

n = 1 mole

R = 8.314 J/(mol K)

T = 20°C

= 293.15 K

Vi = 0.8 m³

Vf = 2.1 m³

Substituting the values into the formula:

W = -1 * 8.314 J/(mol K) * 293.15 K * ln(2.1 m³ / 0.8 m³)

≈ -4125.40 J

Therefore, the work done by the gas during the isothermal expansion is approximately -4125.40 J. The negative sign indicates work done on the gas.

By using the formula for work done during an isothermal expansion and substituting the given values, we calculated that the work done by the gas is approximately -4125.40 J. The negative sign indicates that work is done on the gas during the expansion. The calculation involves considering the gas constant, temperature, and initial and final volumes.

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Answer:

I believe that the answer is B) False

The factors that affect the flow of electric charge will be Voltage and resistance.

The flow of the charge depends upon the voltage because the voltage is responsible to push or it applies the force on the particles to flow.

For example, whenever your battery gets discharged what happens is the potential difference of voltage becomes zero.

So there will not be enough force remaining in the battery to flow the charge but when we charge the battery then it regains its voltage and again pushes the charges to flow.

Now the resistance acts just opposite to the voltage because it restricts the flow of the charges so if the resistance is more then more voltage is required to flow the charge.

Thus the factors that affect the flow of electric charge will be Voltage and resistance.

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Answer:

in my opinion..

Answer:

PE = 64 J

m = 8 kg

g = 1.6 m/s2

h = 5 m

the wavelengths in the hydrogen spectrum of the first four members of the series where m=1, the first four members have the wavelength of \(1.464 * 10^7 m,\) \(1.231 * 10^7 m,\) \(1.164 * 10^7 m,\) and \(1.097 * 10^7 m.\)

The wavelengths of the spectral lines in the Lyman series of the hydrogen spectrum can be calculated using the Rydberg formula:

1/λ = \(R * (1/n1^2 - 1/n2^2)\)

Where λ is the wavelength of the spectral line, R is the Rydberg constant (approximately \(1.097 * 10^7 m^-^1)\), and n1 and n2 are positive integers representing the energy levels of the electron in the hydrogen atom.

For the Lyman series, we have m = 1, which means the electron transitions from higher energy levels (n2) to the first energy level (n1 = 1).

Let's calculate the wavelengths for the first four members of the Lyman series:

For n2 = 2:

1/λ = \(R * (1/1^2 - 1/2^2)\)

1/λ = \(R * (1 - 1/4)\)

1/λ = \(R * (3/4)\)

λ = \(4/3R\)

Substituting the value of the Rydberg constant:

λ = \((4/3) * (1.097 × 10^7 m^-^1)\)

λ ≈ \(1.464 * 10^7 m\)

For n2 = 3:

1/λ = \(R * (1/1^2 - 1/3^2)\)

1/λ = \(R * (1 - 1/9)\)

1/λ = \(R * (8/9)\)

λ = \(9/8R\)

Substituting the value of the Rydberg constant:

λ = \((9/8) * (1.097 * 10^7 m^-1)\)

λ ≈ \(1.231 * 10^7 m\)

For n2 = 4:

1/λ = \(R * (1/1^2 - 1/4^2)\)

1/λ = \(R * (1 - 1/16)\)

1/λ = \(R * (15/16)\)

λ = \(16/15R\)

Substituting the value of the Rydberg constant:

λ = \((16/15) * (1.097 * 10^7 m^-^1)\)

λ ≈ \(1.164 * 10^7 m\)

For n2 = 5:

1/λ = \(R * (1/1^2 - 1/5^2)\)

1/λ = \(R * (1 - 1/25)\)

1/λ = \(R * (24/25)\)

λ = \(25/24R\)

Substituting the value of the Rydberg constant:

λ = \((25/24) * (1.097 * 10^7 m^-^1)\)

λ ≈ \(1.097 * 10^7 m\)

Therefore, the wavelengths of the first four members of the Lyman series are approximately:

\(1.464 * 10^7 m,\)

\(1.231 * 10^7 m,\)

\(1.164 * 10^7 m,\)

and \(1.097 * 10^7 m.\)

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Answer:

635 years old

Explanation:

The light reaching the earth from the sun will travel at a speed called the speed of light, and this has a universal value of 3 × 10⁸ m/s. Bearing this in mind, let us calculate the age of the light reaching the Earth from the sun:

Distance of star from Earth = 6.1 × 10⁸m

Speed of light = 3 × 10⁸ m/s

We have distance and speed, let us calculate the time of travel of the light from the star to the earth.

Distance = speed × time

6.1 × 10⁸ = 3 × 10⁸ × time

\(time = \frac{6.1 \times 10^{18}}{3 \times 10^8}\)

In order to do the division above, we will divide the whole numbers normally, then we will apply the law of indices to the power that says:

Xᵃ ÷ Xᵇ = X⁽ᵃ⁻ᵇ⁾

\(\therefore time = \frac{6.1 \times 10^{18}}{3 \times 10^8}\\= \frac{2.03 \times 10^{(18-8)}}{1} \\= 2.03 \times 10^{10}}\ seconds\)

Next, we are told that there are 3.2 × 10⁷ seconds in a year.

∴ The number of years travelled by the light from the star:

\(3.2\ \times 10^7\ seconds = 1\ year\\1\ second = \frac{1}{3.2\ \times 10^7} \\\therefore 2.03 \times 10^{10}\ seconds = \frac{2.03 \times 10^{10}}{3.2\ \times 10^7}\)

please note that:

2.03 × 10¹⁰ = 20300000000

3.2 × 10⁷ = 32000000

\(\therefore \frac{2.03 \times 10^{10}}{3.2\ \times 10^7}\\= \frac{20300000000}{32000000} \\\\= \frac{20300}{32} \\= 634.347\ years\\\)

The closest answer in the option is 635 years, and we are short of this by some points due probably to approximations in the calculation.

Many people experience pain in their ears while diving to the bottom of a pool because of the change in pressure.

As the depth increases, the pressure increases, and the volume of air in the ear (in the middle ear space behind the eardrum) is compressed. This can cause discomfort or pain. Additionally, water pressure can push on the eardrum, further increasing the discomfort.

This phenomenon is commonly known as "swimmer's ear" or "dive ear" and can be prevented by equalizing the pressure in the ear through techniques like swallowing, yawning, or holding one's nose and blowing gently.

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The answer is:

PRESSURE INCREASES AS THE DEPTH OF THE WATER COLUMN ABOVE THEM INCREASES.

This is correct for pf students!

Hope i helped!

The speed with which the proton is shot along the perpendicular line to the square is calculated to be 435 × 10⁴ m/s.

Charge on each sphere = 35 n C = 35 × 10⁻⁹ C

Side of each square is given as 8 cm = 0.08 m.

Distance of centre of square from any charge r = √2l/2 = r= √2 × 0.08/ 2

r = 0.02m

The square's centre's electric potential is determined by:

Vc = 4 × (kq/r)

The electric potential at a distant place is V ∞ = 0.

Potential Energy difference between the two point is,

ΔV = Ve - V∞

ΔV = 4×(kq/r)

For the proton to pass through the centre of square the proton must have kinetic energy equal to the potential energy at the centre of the square.

The proton's kinetic energy is K = mv²

where,

m is mass

v is velocity

The proton's potential energy is U = eΔV

where,

ΔV is potential

For the proton to pass through,

K(at ∞) = U(Centre)

1/2 mv² = 4kqe/ r

v = √(8 k q)/( m r)

v = √(8 × 9 × 10⁹ × 55 × 10⁻⁹ × 1.6 × 10⁻¹⁹)/ (1.67 × 10⁻²⁷ × 0.02) m/s = (6336× 10⁸)/0.0334 = 435 × 10⁴ m/s

The question is incomplete. The complete question is 'What minimum initial speed does the proton need to pass through the square of charges?'

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Mars is the planetary body that has bedrock, reddish dust, and ice caps. This information comes from sources such as NASA, James Bon Cornell University, Michael Wolff (Space Science Institute), and the Hubble Heritage Team (STSCVAURA).

Mars, the fourth planet from the Sun in our solar system, is characterized by its reddish appearance due to the iron oxide (or rust) present in its soil and dust. The bedrock on Mars is made up of various types of rocks, such as basaltic rocks and sedimentary rocks, which have been shaped by geological processes over time. In addition to the bedrock and reddish dust, Mars is also known for its ice caps, which are primarily composed of water ice with some frozen carbon dioxide. These ice caps are located at the planet's north and south poles and provide valuable information about Mars' climate history and potential for future human exploration.

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Answer:

it is d all of the above your welcome

Answer: Justin will have higher level of hemoglobin.

Explanation: athletes have an increased total mass of red blood cells and hemoglobin in circulation.

Answer:

Justin will have higher level of hemoglobin.

Explanation:

Answer:

The photon or quantum of light

Explanation:

Answer: 4.44444444444

Explanation: Change in Velocity/Time = Acceleration

80.0/18.0 = 4.44444444444

The acceleration of the car is \(4.44 m/s^2\).

Acceleration is defined as the rate of change of velocity which means that the momentum is changing, but not always. When an object moves in a circular path at a constant speed, it is still accelerating because the direction of its velocity is changing. An object's acceleration is described as the net result of any and all forces acting on the object, which is described by Newton's Second Law

Accelerations are vector quantities as it has both magnitude as well as direction.  The SI unit for acceleration is meter per second squared \((m s^-^2)\)

The initial velocity of the car is 0 m/s since it starts from rest. The final velocity is 80 m/s. So the change in velocity is,

\(V_f-V_i\) = 80m/s-0m/s = 80m/s

Time= 18 seconds

So, Acceleration= Change in velocity/ Time taken

a= 80/18= \(4.44m/s^2\)

Thus, the acceleration of the car is \(4.44 m/s^2\).

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Use Newton's second law. The net force on the hero is

∑ F = T - m g = m (2.00 m/s²)

where

• T = tension in the rope

• m = 75.0 kg = mass of the hero

• g = 9.80 m/s² = acceleration due to gravity

Solve for T :

T = (75.0 kg) (g + 2.00 m/s²) = 885 N

Balancing the forces acting on a body is not enough to establish equilibrium because equilibrium also requires the balancing of torques or moments acting on the body.

In physics, equilibrium refers to a state in which an object or system experiences no net force and no net torque. For an object to be in equilibrium, both the forces and the torques acting on it must be balanced.

Balancing the forces means that the vector sum of all the forces acting on the body is equal to zero. This ensures that there is no net force acting on the object, and it will not accelerate in any direction. However, even if the forces are balanced, the object can still rotate or have a tendency to rotate if the torques acting on it are not balanced.

A torque, also known as a moment, is a measure of the tendency of a force to rotate an object about a specific axis. It depends on the magnitude of the force, the distance from the axis of rotation, and the angle between the force and the lever arm. When torques are balanced, the sum of all the torques acting on the object is equal to zero.

To establish equilibrium, both the forces and the torques acting on the body must be balanced. This means that not only should the vector sum of the forces be zero, but also the algebraic sum of the torques should be zero. When both conditions are met, the object will remain at rest or continue to move with a constant rotational motion.

Balancing the forces acting on a body is not enough to establish equilibrium because equilibrium requires the balancing of both forces and torques. Simply balancing the forces ensures that there is no net force acting on the object, but it does not guarantee that the object will be in a state of complete equilibrium. To achieve equilibrium, the torques acting on the object must also be balanced, ensuring that there is no tendency for rotation.

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Answer:

erosion

Explanation:

Answer:

0.10 A

Explanation:

Answer:

Explanation:

When a sound hits a surface, some energy is reflected, and some is absorbed. Smooth, hard surfaces reflect most sound, so you get echo in an empty room, for instance, whereas fill the room with furniture, put down a carpet and hang curtains and the sounds are dampened. Special surfaces on walls, ceilings and floors are used to dampen reflected sound in recording studios and audio laboratorie

Rock is hard and highly elastic, and when sound passes through it, the rock generally returns to the original state, with no record of the passage of sound. If the sound is intense enough, then a permanent record can be formed. That does happen when a shock wave (intense sound) passes through quartz crystals from asteroid impacts. Such "shocked quartz" was early evidence that the death of the dinosaurs was associated with a huge impact.

A related and fascinating story: Edward Purcell, great Harvard physicist, winner of the Nobel Prize, once speculated that sound waves could leave patterns in silk. As the silk worm extrudes the thread, the size of the thread might be affected by ambient sound. If right, he would be able to reconstruct ancient sounds and maybe even voices from people in the silk worm farms, from ancient silk! He did some careful experiments, but he couldn’t find anything that worked.

Object distance, u = 26.0 cm

Focal length, f = -14.0 cm

Image distance, v = ?

The relationship between object distance, image distance, and focal length is:

Magnigication is calculated as:

The magnification of the object = 0.35

Cardiovascular drug classes are Beta-blockers, Diuretics, Calcium channel blockers, and ACE inhibitors. The correct answer is options are A, B, D, and F.

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The correct question would be as

Which of the following are cardiovascular drug classes? Select all that apply.

A) Beta-blockers

B) Diuretics

C) Antibiotics

D) Calcium channel blockers

E) Antidepressants

F) ACE inhibitors

From the information in the picture, it's not possible to select any of the choices on the list.

-- Knowing the horizontal and vertical forces on the plane, we can't tell what direction it will move.  We can only tell what direction it will accelerate.

The net horizontal force is (200N right) - (50N left).

. . . That's 150N to the right, so the plane accelerates to the right.

The net vertical force is (175N up) - (75N down).

. . . That's 100N upward, so the plane accelerates upward.

-- We can't tell the compass direction of the net force, because the picture doesn't tell us the compass direction of the horizontal forces.

Answer:

Increase in mass and height

Explanation:

The gravitational potential energy of an object can increase if the mass and height of object is increased.

Gravitational potential energy is the energy due to the position of a body.

It is expressed as:

  Gravitational potential energy = mass x acceleration due gravity x height

Increasing mass and height will cause an increase in gravitational potential energy.

Answer:

The change in internal energy of the system is 500 J.

Answer:500J

Explanation:

The angular position of the large, cylindrical roller with a diameter of 4.00 m is a measurement of the amount of rotation of the roller in relation to a fixed axis.

In a manufacturing process, a large, cylindrical roller is used to flatten material fed beneath it. The diameter of the roller is 4.00 m, and, while being driven into rotation around a fixed axis, its angular position is expressed as. Angular position refers to the position of a rotating object relative to a reference point. It is a measure of how far an object has rotated around a particular axis relative to a reference point. The angular position of an object is typically measured in radians or degrees. The angular position of a rotating object can be described as a function of time by its angular velocity and its initial angular position. The formula for angular position is given as,θ = ωt + θ₀where,θ is the angular position of the object at time tω is the angular velocity of the objectθ₀ is the initial angular position of the object.

For the given problem, the angular position of the cylindrical roller is expressed as,θ = ωt + θ₀where,ω = Angular velocity

t = Time

θ₀ = Initial angular position

Given,

The diameter of the roller = 4.00 m

Radius of the roller = 2.00 m

The angular position of the roller is expressed as,

θ = 2.00t

where,θ is in radians and t is in seconds.

Therefore, the angular position of the roller is given by the formula,θ = ωt + θ₀

where,ω = 2.00 rad/st = Timeθ₀ = 0So,θ = 2.00t rad

By substituting the value of ω into the formula θ = ωt, we can calculate the angular position of the roller in terms of time.

In other words, it is the angle through which the roller has been rotated around a point of reference.

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In a manufacturing process, a large, cylindrical roller is used to flatten material fed beneath it. The diameter of the roller is 4.00 m, and, while being driven into rotation around a fixed axis, its angular position is expressed as θ = 2.10t2 − 0.850t3 where θ is in radians and t is in seconds. (a) Find the maximum angular speed of the roller. rad/s (b) What is the maximum tangential speed of a point on the rim of the roller? m/s (c) At what time t should the driving force be removed from the roller so that the roller does not reverse its direction of rotation? s (d) Through how many rotations has the roller turned between t = 0 and the time found in part (c)? rotations

Answer:

In biology, cell theory is the historic scientific theory, now universally accepted, that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells. Cells are the basic unit of structure in all organisms and also the basic unit of reproduction.

Explanation:

The three tenets to the cell theory are as described below:

All living organisms are composed of one or more cells.

The cell is the basic unit of structure and organization in organisms.

Cells arise from pre-existing cells.

There is no universally accepted definition of life. Some biologists consider non-cellular entities such as viruses living organisms,[1] and thus reasonably disagree with the first tenet. Throughout this article, it will lead you through the history of cell theory, how the discovery of cells was made possible, what the cell theory has become today and background information and history regarding other opposing concepts of cell theory.

Answer

the answer is 6.25

Explanation:

Here, the mass of the stone (m) = 0.5 kg, velocity at which it is thrown (v) = 5 m/s, The kinetic energy of the stone (KE) =? We have, Kinetic energy of the stone (KE) = \ (\frac12mv^21) = \(\frac120.5\times5^2\) = 6.25 Joules Hence, the kinetic energy of the stone (KE) is 6.25 joules. Hope it will be helpful