a star-forming cloud flattens into a disk that spins faster as the cloud contracts because of conservation of angular momentum. then material from the disk gradually spirals inward toward the newly forming star at the center, accreting onto its surface and adding to its mass. what would we find if we could measure the orbital speeds of gas particles in the accretion disk? suppose there were no friction in the disk orbiting the protostar; would this affect the orbital speeds? overall, how would a lack of friction change the process?

The magnitude of the counterweight w necessary to minimize the maximum absolute value of the bending moment in the beam is determined by considering the following two factors.

Firstly, the moment created by the weight w must be equal in magnitude but opposite in direction to the other forces acting on the beam. This will result in a balanced system and prevent the beam from buckling. Secondly, the relative size of the weight w must be adjusted to ensure that the maximum absolute value of the bending moment is minimized.

The value of w must be chosen to ensure that the weight is not too small or too large relative to the other forces, resulting in an unbalanced system with a larger maximum absolute value of the bending moment. In summary, the magnitude of w necessary to minimize the highest absolute value of the bending moment in the beam is determined by finding an appropriate balance in the opposing forces.

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A truck that pulls a trailer with a frictional force of 870 n and a coefficient of friction of 0.23 has a normal force of 3782.6 N.

The force that is produced by any two surfaces while coming into contact and sliding against one another is referred to as frictional force.

The following variables impact the frictional force: Surface roughness and the amount of force pressing them together have the biggest impact on these forces.

The imperfections present between the two surfaces in contact are what produce friction.

Even the smoothest surfaces include tiny abnormalities, and when two surfaces interact with one another, these irregularities cause friction. The friction increases as the imperfections get bigger.

Frictional force can be formulated as

F = uN

here N is the normal force.

⇒N = f/u = 870/0.23

⇒ N = 3782.6N

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The best activity for her to do to improve her range of motion is flexibility.

The term the range of motion (ROM) describes the extent to which a joint or muscle may be moved or stretched. Everybody has a distinct experience. For instance, whereas some people can perform a complete split, others cannot because their joints are stiff and their muscles are unable to extend as far.

A joint is said to have a restricted range of motion when it cannot move easily and completely in its typical position. A mechanical issue within the joint, swollen tissues around the joint, or pain may restrict motion.

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When a completely smooth ball is simply rolling on a perfectly flat surface, there is no resistance between the surface and the ball, hence the ball is not slowed by the friction.

Realize that work implies that the operating force—here, friction—cause relative motion between the bodies. This may seem counterintuitive (that is, force from friction would need to cause the ball to move sideways relative to whatever it is rolling on). In pure rolling, the ball rotates around an axis but does not translate with respect to its point of contact with the surface (in pure rolling that point of contact is instantaneously stationary).

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Considering the stress, the minimum width of the aluminum plate required to withstand a force of 49,700 N with no permanent deformation is 795.2 cm.

Stress, which is defined as force per unit area, may be used to indicate the aluminum's yield strength. As a result, we can determine the stress that corresponds to the aluminum's yield strength using the formula below:

Stress = yield strength equals 125 MPa or 125 N/cm2.

The aluminum plate's stress cannot be greater than its yield strength to prevent irreversible deformation of the material.

The force applied to the plate's surface may be related to its area using the stress formula:

Stress = force/area

area = 49,700 N / 125 N/cm² = 397.6 cm²

The area of the plate is the product of its width and thickness. Let's assume that the plate has a rectangular shape and solve for the minimum width required to achieve the required area:

area = width x thickness

width = area / thickness

         = 397.6 cm² / 0.5 cm

         = 795.2 cm

Therefore, the minimum width of the aluminum plate required to withstand a force of 49,700 N with no permanent deformation is 795.2 cm.

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Answer:

An interaction between electricity and magnetism produces an electromagnet, while a permanent magnet induces the paper clip's magnetic field.

Explanation:

A p e x :)

1. 14.55 V is the potential difference, ΔVcharging, in volts, across its terminals when charging.

2.  at 148 W  rate, Pcharging, in watts, is thermal energy being dissipated in the battery

3. 696 W Pchem, in watts, is electric energy being converted to chemical energy.

4.   Once the battery has finished charging, 9.36 V is the potential difference, ΔV, in volts, across its terminals, when the charged battery is used to supply 60 A to the starter motor.

5. At 148 W rate, P, in watts, is thermal energy dissipated in the battery when the battery is used to supply 58 A to the starter motor.

Given :

ε = 12 V.

R = 0.044 ohm.

I = 58 A.

Solution :

(1) :

The potential difference is,

ΔV = ε + V = ε + IR.

ΔV = 12 + (58)(0.044).

ΔV = 14.55 V. ..... (Ans).

(2) :

The rate of charging is,

P = I2R = (58)2(0.044).

P = 148 W. ...... (Ans).

(3) :

\(P_c_h_e_m\) = εI = (12)(58).

\(P_c_h_e_m\) = 696 W. ..... (Ans).

(4) :

Here, Io = 60 A.

After charging, the potential difference,

ΔV = ε - Vo = ε - IoR.

ΔV = 12 - (60)(0.044).

ΔV = 9.36 V. ..... (Ans).

(5) :

The rate of thermal energy dissipated is,

P = I2R = (58)2(0.044).

P = 148 W. ..... (Ans).

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The definitive treatment for appendicitis is usually surgical removal of the appendix, a procedure known as an appendectomy

The patient in question, a 12-year-old male, presented with nausea and vomiting accompanied by right lower abdominal pain. Acute appendicitis is a potential diagnosis that could explain the symptoms.

A brief overview of what PESILAD is PESILAD is an acronym that stands for Pain, Etiology, Signs, Impact, Learning, Anatomy, and Differential Diagnosis. PESILAD is a systematic method of assessing clinical cases that are widely used in medical education to teach students how to think like a doctor when diagnosing and treating patients.

What is acute appendicitis? Appendicitis is a condition in which the appendix, a small, thin tube that extends from the large intestine, becomes inflamed. It is a common condition that affects people of all ages, but it is more common in people between the ages of 10 and 30. Appendicitis can cause severe pain in the lower right abdomen, nausea, vomiting, fever, and other symptoms. The pain may start near the navel and move to the lower right side of the abdomen over time. Appendicitis is a medical emergency that requires prompt medical attention. If left untreated, the appendix can burst, leading to serious complications.

What is the diagnosis of Acute Appendicitis? The diagnosis of appendicitis is usually made based on a combination of a patient's symptoms, physical exam, and lab tests. In most cases, the doctor will perform a physical exam, check the patient's vital signs, and take a medical history to determine the cause of the symptoms. Blood tests and imaging studies, such as an ultrasound or CT scan, may also be ordered to help confirm the diagnosis.

The definitive treatment for appendicitis is usually surgical removal of the appendix, a procedure known as an appendectomy. In some cases, antibiotics may be used to treat the infection before surgery is performed.

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A blood test to look for infections, a urine test to rule out other causes, and imaging tests like an ultrasound or CT scan to see the appendix and look for inflammation are some of the procedures that may be performed.

Inflammation of the appendix, a tiny pouch situated in the lower right side of the belly, is a common symptom of acute appendicitis. Abdominal pain is the most common symptom, frequently beginning at the belly button and moving to the lower right abdomen.

A 12-year-old male who complains of right lower abdomen discomfort and nausea and vomiting may have acute appendicitis, according to a probable diagnosis. Other signs that could be present include fever, appetite loss, and right lower abdominal pain.

A healthcare provider often does a physical examination, examines the patient's medical history, and orders further testing to identify acute appendicitis. A blood test to look for infections, a urine test to rule out other causes, and imaging tests like an ultrasound or CT scan to see the appendix and look for inflammation are some of the procedures that may be performed.

The best course of action would be to consult with a healthcare professional, such as a surgeon, who can further evaluate the patient and determine the most appropriate treatment, which typically involves surgical removal of the inflamed appendix (appendectomy), if the clinical findings and diagnostic tests support the diagnosis of acute appendicitis.

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A. The amount of heat energy the heater supply is 42000 J

B. The temperature rise of the water is 5 °C

A. How do I determine the energy supplied by the heater?

We can determine the heat energy supplied by the heater as illustrated below:

Electrical power = Electrical eneryg / time

210 = Energy / 200

Cross multiply

Energy = 210 × 200

Energy = 42000 J

Thus, the energy supplied is 42000 J

B. How do I determine the temperature rise?

The temperature rise of the water can be obtained as follow:

Q = MCΔT

42000 = 2 × 4184 × ΔT

42000 = 8368 × ΔT

Divide both sides by 8368

ΔT = 42000 / 8368

ΔT = 5 °C

Thus, the temperature rise is 5 °C

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Answer:

Night vision is when you can see in the dark or at night like owls

Explanation:

Answer:

when you are able to see in the dark

Explanation:

Night vision is vision at night, and means that you are able to see at night, or when it is dark.

The magnitude of acceleration is 7.44 m/s²

Given data:

Radius of the circle, r = 26 m,

Speed of the particle, v = 14 m/s.

Acceleration of the particle is given by the formula: a = v²/r

Where, v is the velocity of the particle and r is the radius of the circle on which the particle is moving.

Substitute the given values in the formula of acceleration.

a = v²/r

= (14 m/s)²/26 m

= 7.44 m/s² (rounded off to two decimal places)

Therefore, the magnitude of acceleration is 7.44 m/s².

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Answer:

Hand soap: basic

chocolate milk: neutral

apple juice: acidic

shampoo: acidic

mouthwash: acidic

tap water: basic

Explanation:

Check your PH scale

1-6 = acidic

7 = neutral

8-14 = basic

Explanation:

The only force acting on a projectile after it is launched is...

gravity force

Answer:

Explanation:

Named for 19th-century French physicist André-Marie Ampère, it represents a flow of one coulomb of electricity per second.

The answers would be: 1) No, the Sun is only directly overhead at noon at this location on the summer solstice; 2) None of these options can be used to support the misconception; 3) In the Southern Hemisphere, particularly in Australia, it would be summer on the same day; and 4) No, stars are not located using latitude and longitude but rather by their coordinates of declination and right ascension.

1) The Sun is not directly overhead at noon every day at the location of the science center in the continental United States. It is only directly overhead at noon on the summer solstice, which typically occurs around June 21st.

2) None of the given options can be used to support the visitor's misconception about the seasons. The correct explanation for the seasons is the tilt of the Earth's axis, not the eccentricity of its orbit or the position of perihelion.

3) If the visitor wishes for it to be summer on the same day, you could inform them that in the Southern Hemisphere, particularly in countries like Australia, it is currently summer.

4) Stars do not have a latitude and longitude system like locations on Earth. They are located using coordinates of declination (similar to latitude) and right ascension (similar to longitude), which are measured in celestial coordinates. Constellations are used as reference points for identifying stars but do not represent their precise locations.

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The current at point A = 3A, The current at B = 6 A, the current at C = 2.25 A, the current at D = 18 A.

The current flowing in the circuit is calculated as follows;

Same current will be flowing at point A and C since they are in series, while different current will be flowing in the rest of the circuit.

Total resistance  is calculated as;

1/R = 1/(3 + 9) + 1/6 + 1/2

1/R = 1/12 + 1/6 + 1/2

R = 1.33

The total current in the circuit;

I = V/R

I = 36 V / 1.33

I = 27 A

Current at B = 36 / 6 = 6 A

Current at D = 36 / 2 = 18 A

Current at A and C = 27 A - (6 + 18)A = 3 A

Current at A = 3 / 12 x 3 A = 0.75 A

current at C = 9 / 12  x 3A = 2.25 A

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Answer:

Answer: Fourteenth Amendment,

Explanation:

No Person shall be c. . . ... Fourteenth Amedement

Section 1: All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside....

13.The color with the longest wavelength is option A. Red.

14.The sky appears blue due to option D. Scattering of light.

Red light has a longer wavelength compared to yellow and blue light.The color that has the longest wavelength is red. The color of the sky appears blue due to scattering of light. The distance between one peak and the next in a series of waves, particularly electromagnetic waves traveling through space or along a wire is referred to as wavelength.

The wavelength of light, for example, determines its color. Red light has the longest wavelength, followed by orange, yellow, green, blue, and purple, with violet light having the shortest wavelength. When light is reflected off a surface or passes through a medium, it can be deflected in various directions, a phenomenon known as scattering of light.

The Earth's atmosphere scatters sunlight in all directions, but the shorter blue wavelengths are scattered more than the longer wavelengths. As a result, we perceive the sky as blue during the day.  The light becomes scattered when it interacts with particles in the atmosphere, causing the sky to appear blue during the day and red during sunset or sunrise. The scattering of light is the process that causes the sky to appear blue.

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B

They store the radioactive waste in pools of water until it is no longer dangerous. It is then transferred to a dry cask. :))

For a constant volume, the pressure of a gas is directly proportional to the temperature in Kelvin is the conclusion which can be made from Gay-Lussac’s law and is denoted as option D.

This is referred to as the perpendicular force applied on a body per unit area and the unit is Pascal.

Gay-Lussac was a scientist who discovered through numerous experiments and observations that at a constant volume, the pressure of a gas is directly proportional to the temperature in Kelvin.

This is denoted as the following equation below:

P ∝ T

P = kT where p is pressure, k is constant and t is temperature.

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The options are:

1c 2c 3a 4a 5d

Explanation:

I just know.

ur welcome.

eeee

Answer:

Explanation:

The examples of electric force are

The charge in a bulb.

Electric circuits.

Static friction between cloth when rubbed by a dryer.

The shock that is felt after touching a doorknob.

The conflict between Ethiopia and Italy in 1935-36 began with Italy's imperialist expansionist ambitions in East Africa.

In 1896, Ethiopia had successfully resisted Italian colonialism in the Battle of Adwa. However, under the rule of fascist leader Benito Mussolini, Italy sought to establish a new colonial empire and to avenge its defeat.

Italy had been planning the invasion for several years. Italy used modern weapons, including aircraft and tanks, against the poorly equipped Ethiopian forces, and after several months of fighting, Ethiopia was defeated and subsequently occupied by Italy. The war resulted in the deaths of tens of thousands of Ethiopians and Italians and had far-reaching political and economic consequences for both countries.

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--The complete question is, What events led to war between ethiopia and italy?--

Earthquakes can result in the ground shaking, soil liquefaction, landslides, fissures, avalanches, fires and tsunamis. The extent of destruction and harm caused by an earthquake depends on: magnitude. intensity and duration.

Answer:

land slide

tusnami

land slide

destruction to buildings

loss of lives

Distance of train after 1.8 h is 485.099 m

Distance is a measurement of how far apart two things or points are, either numerically or occasionally qualitatively. Distance can refer to a physical length in physics or to an estimate based on other factors in ordinary language.

Distance of the first plane = 650 x 1.8 = 1170 m

Distance of the second plane = 590 x 1.8 = 1062m

The angle between 2 planes

161◦ - 16.9◦ = 144.1°

Using the law of cosine

d^2 = (1170)^2 + (1062)^2 - 2*1170*1062*cos 144.1°

d = 485.099 m

Hence, distance of train after 1.8 h is 485.099 m

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The bullet takes 0.0025 seconds to pass through the wooden plank of 5 cm thickness when it is traveling horizontally with an initial speed of 30 m/s and a final speed of 10 m/s.

The time taken by the bullet to pass through the wooden plank can be determined using the equation of motion for constant acceleration.

Given:
Initial speed (u) = 30 m/s

Final speed (v) = 10 m/s

Distance (s) = 5 cm = 0.05 m

To find the time taken (t), we need to calculate the acceleration (a) first. We can use the equation:

v² = u² + 2as

Rearranging the equation, we have:

a = (v² - u²) / (2s)

Substituting the given values:

a = (10² - 30²) / (2 * 0.05)

Simplifying the expression:

a = (-800) / (0.1)

a = -8000 m/s²

The negative sign indicates that the acceleration is in the opposite direction of the initial velocity.

Next, we can use the equation of motion:

v = u + at

Substituting the values:

10 = 30 + (-8000) * t

Simplifying the equation:

-8000t = -20

Dividing by -8000:

t = 20 / 8000
t = 0.0025 s

Therefore, the time taken by the bullet to pass through the wooden plank of 5 cm thickness is 0.0025 seconds.


To find the time taken by the bullet to pass through the wooden plank, we need to calculate the acceleration first using the equation of motion.

By rearranging the equation and substituting the given values, we can find the acceleration.

Then, using the equation of motion again, we can solve for time.

The negative sign in the acceleration indicates that it is in the opposite direction of the initial velocity.

The resulting time is 0.0025 seconds.

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At extreme position, velocity is zero but acceleration is maximum in Simple Harmonic motion because of maximum displacement of pendulum.

At extreme position, velocity is zero but acceleration is maximum in Simple Harmonic motion because at extreme points the motion of the pendulum is at zero which means that velocity is zero but the pendulum attains maximum displacement. Acceleration is maximum when it gets the extreme position because the displacement is maximum at extreme position. If the velocity of the simple harmonic motion is maximum, the acceleration must be equal to zero and we know that the acceleration is equal to zero only when the particle or object is at initial position.

So we can conclude that at extreme position, velocity is zero but acceleration is maximum in Simple Harmonic motion because of maximum displacement of pendulum.

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The magnitude of the impulse is 0.183 kg·m/s, and the force exerted on the ball by the floor is 1.525 N in the upward direction.

To determine the magnitude and direction of the impulse delivered to the ball by the floor, we can use the principle of conservation of momentum. The impulse is given by the change in momentum of the ball.

The initial momentum of the ball before it hits the floor is given by:

p_initial = m * v_initial

where:

m = mass of the ball = 0.300 kg

v_initial = initial velocity of the ball before it hits the floor

The final momentum of the ball after it rebounds from the floor is given by:

p_final = m * v_final

where:

v_final = final velocity of the ball after it rebounds from the floor

The impulse delivered to the ball by the floor is the change in momentum:

Impulse = p_final - p_initial

Now, let's calculate the magnitudes and directions.

First, let's find the initial velocity of the ball using the height it was dropped from:

h = 1/2 * g * t^2

where:

h = height = 1.75 m

g = acceleration due to gravity = 9.8 m/s^2

t = time of fall

Using the equation above, we can solve for t:

t = sqrt(2 * h / g)

t = sqrt(2 * 1.75 / 9.8) ≈ 0.596 s

The initial velocity is given by:

v_initial = g * t

v_initial = 9.8 * 0.596 ≈ 5.83 m/s

Next, let's find the final velocity of the ball using the rebound height:

Using the equation for potential energy:

m * g * h = 1/2 * m * v_final^2

v_final = sqrt(2 * g * h)

v_final = sqrt(2 * 9.8 * 1.50) ≈ 6.44 m/s

Now we can calculate the impulse:

Impulse = m * v_final - m * v_initial

Impulse = 0.300 * 6.44 - 0.300 * 5.83 ≈ 0.183 kg·m/s

The magnitude of the impulse delivered to the ball by the floor is approximately 0.183 kg·m/s.

To find the force exerted on the ball by the floor, we can use the equation:

Impulse = Force * time

Solving for Force:

Force = Impulse / time

Force = 0.183 / 0.120 ≈ 1.525 N

The force exerted on the ball by the floor is approximately 1.525 N.

Therefore, the magnitude of the impulse is 0.183 kg·m/s, and the force exerted on the ball by the floor is 1.525 N in the upward direction.

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In 1831, Michael Faraday and Joseph Henry independently and almost simultaneously made the discovery of electromagnetic induction therefore, option A is the right choice.

Electromagnetic induction refers to the production of an electromotive force (EMF) by the use of a moving magnetic field that is encircling an electric conductor, as well as the production of current by means of the movement of an electric conductor through a static magnetic field.

Electromagnetic interference (EMI) is also known as electric current and electromagnetic induction. It may also be referred to as magnetic induction due to the fact that the underlying concept is the same regardless of whether the procedure is carried out using an electromagnet or a static magnet.

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