A hydraulic system contains 3 pistons. The input piston has an area of 0.625 in2, one of the output pistons ( piston A ) has an unknown area and the other piston ( Output Piston ) has a diameter of 3.75 inches. If system pressure is 1,440 psi, and Piston A is supporting 20,000 lb, what is the area of Piston A

The Ebbinghaus learning curve refers to how quickly someone picks up new information. The spike is largest after the first attempt, then it progressively levels out, indicating that with each repetition, fewer and fewer pieces of new information are stored.

Ebbinghaus tested himself repeatedly after different amounts of time and recorded the findings in order to study the memorization of nonsensical syllables like "WID" and "ZOF" (CVCs, or Consonant-Vowel-Consonant).

German psychologist and philosopher Hermann Ebbinghaus was a pioneer in the field of memory research. Experimental psychology had only ever looked at the nature of feeling and perception up until Ebbinghaus' publication of his book (1885/1964).

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Answer:

6m

Explanation:

2+4=6

Answer:

The answer is B.

Explanation:

The formula of power is :

\(power = \frac{work \: done}{time} \)

* Work done can be "Energy"

The statement "For a concave mirror, the reflective side of the mirror is on the outward side of the mirror's curve" is false

For a concave mirror, the reflective side of the mirror is on the inward side of the mirror's curve, not the outward side. A concave mirror is characterized by its curved surface that bulges inward, causing light rays to converge. The reflective surface is on the inside of the curve, facing towards the center of curvature.

When light rays strike a concave mirror, they reflect off the curved surface and converge towards a focal point. This property of convergence allows concave mirrors to form real and virtual images depending on the position of the object relative to the mirror.

The reflective side of a concave mirror is typically coated with a thin layer of metal, such as aluminum or silver, to enhance its reflectivity. This coating is applied on the inward side, ensuring that the light rays reflect off the inner surface and converge as desired.

In summary, the statement "For a concave mirror, the reflective side of the mirror is on the outward side of the mirror's curve" is false. The reflective side is on the inward side of the mirror's curve.

The question should be:
for a concave mirror the reflective side of the mirror is on the outward side of the mirror's curve. true or false.

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Answer:

Jane's measurements are precise.

Explanation:  Jane's values are close to each other, so they are precise.

The correct hypothesis to test the theory is: Option b : The speed of the cart as it reaches the spring is directly proportional to the average force the students exert on the cart.

(a) Select the velocity on the graph and use the formula

a = (vf - vi)/t a = - 10m/s2.

(b) The impulse, which is equivalent to the change in momentum, is given by the force time graph's area.

You can divide the graph into three triangles and one rectangle, and then use the value above to calculate the area = 0.6Ns = 0.6kg m/s of momentum change

c). 1.5 kg is equal to p = m(vf - vi) - 0.6 = m(-0.22 - 0.18) m. The force sensor applies a negative momentum because, in the event of a collision with the cart, it would push in the other direction.

(d) K = Kf - Ki = 12 (1.5) (0.182 - 0.222) = - 0.012J

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Given data:

* The distance traveled by the air conditioner is,

Solution:

As the air conditioner is falling freely under the action of gravity.

Thus, the acceleration of the air conditioner is equal to the acceleration due to gravity.

As the air conditione ris falling itself from the height.

Thus, the initial velocity of the air conditoner is,

By the kinematics equation, the final velocity of the air conditioner is,

Substituting the known values,

Thus, the final velocity of the air conditioner is 21.69 m/s.

By the kinematics equation, the time taken by the air conditioner,

where t is the time taken by the air conditioner to reach the ground,

Substituting the known values,

Thus, the time taken by the air conditioner ot reach the ground is 2.21 seconds.

Answer:

0.75N/kg

Explanation:

coefficient of force=force/mass

so 15N/20kg

=0.75N/kg

thanks!!

The correct option is (C) -Rounded to two decimal places, the percentage of blue whale calves with a length of between 295 in and 309 in according to the model is 5.74%.

Mean length of blue whale calf = 278 in

Standard deviation = 20 in

The percentage of blue whale calves with a length of between 295 in and 309 in, according to the model.We are given the mean and standard deviation of the normal distribution.

We use the formula: Z = (X - μ) / σWhere,X = the given value of the random variableμ = the mean of the normal distributionσ = the standard deviation of the normal distribution

Using the above formula, we get: Z1 = (295 - 278) / 20 = 0.85Z2 = (309 - 278) / 20 = 1.55

Using the standard normal table or calculator, the probability that a random blue whale calf has a length between 295 in and 309 in is:

P(295 < X < 309) = P(0.85 < Z < 1.55) = 0.0574 (approx.)

Therefore, the required percentage is:P(295 < X < 309) × 100% = 0.0574 × 100% = 5.74% (approx.)Rounded to two decimal places, the percentage of blue whale calves with a length of between 295 in and 309 in according to the model is 5.74%.

Hence, the correct option is (C) 5.74%.

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Answer: astrolabe

Explanation:

Answer:A) Their linear velocitie

Explanation:

Answer:

Explanation:

Let mass of cart be m₁ and m₂

m₁ + m₂ = 1.5 kg

At the time of release , their momentum will be conserved

m₁ v ₁ = m₂ v₂

m₁ v ₁ = (1.5 - m₁ ) x 2 v₁

m₁ = 3 - 2m₁

3m₁ = 3

m₁ = 1 kg

m₂ = .5 kg

zero

we know that when derivantind the position function respecto to time we got the function for velocity, so we can integrate the given function to obtain the function for velocity

hence

Step 1

a) integrate to find the function for distance travelede

so

Step 2

now,we have the functio for the distance,

a) evaluate for t=0

b) evaluate for t=3 minutes

now, find the total distance traveled by the particle from t = 0 to t = 3 minutes., subtract the positions

so, the total displacement would be zero,but :

the particle actually travels ,it start in negative direction,and then it moves to positive direction, after 3 minutes the particle is in the same place

so, the answer is zero

Answer:

1.)Reflection is the act of light reflecting back when it hits a medium on a plane. Refraction is the process by which light shifts its path as it travels through a material, causing the light to bend. Thus, this is the key difference between reflection and refraction. This phenomenon usually occurs in mirrors.

2.)ray diagrams are a visual representation of the propagation of light. They can help us to understand and visualise multiple situations, such as light being reflected off of a mirror or changing its direction while moving through a lens.

3.)Reflection: The process of sending back the light rays which fall on polished surface is called reflection of light.

Laws of reflection:

(i) The angle of reflection is always equal to the angle of incidence.

(ii) The incident rays, reflected rays and the normal, all lie in the same plane.

4.)Snell’s law formula is expressed as: μ= sin i/sin r

, where i is the angle of refraction, r is the angle of refraction and μ is known as the refractive index of the second medium with respect to the first medium.

Saturn is a planet in solar system. It's ring is made out of small covered ice particle. It has over 30 moons.

Frictional force is the force that opposes the motion or attempted motion of an object in contact with another object or surface. From the question,  the frictional force opposing the applied force is 7.85 N.

The frictional force can be arrived at by using the formula below:

Frictional force = coefficient of friction * normal force

where the normal force is the force exerted by the table on the block and is equal to the weight of the block, which is:

Normal force = mass * gravitational acceleration = 4.0 kg * 9.81 m/s²= 39.24 N

So, the frictional force is:

Frictional force = 0.20 * 39.24 N = 7.85 N

Therefore, the frictional force opposing the 20 N applied force is 7.85 N.

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Answer:

P waves, or Primary waves, are the first waves to arrive at a seismograph. P waves are the fastest seismic waves and can move through solid and liquids

Explanation:

Displacement of diver , d = 6000-1260 = 4740 m.

Let, time taken be t .

By equation of motion :

\(v^2-u^2=2gs\\\\v=\sqrt{2gs}\\\\v=\sqrt{2\times 9.8\times 4740}\ m/s\\\\v=304.8\ m/s\)

Now , by equation :

v = u +gt

304.8 = 0 + 9.8t

t = 31.1 seconds

Hence, this is the required solution.

Given that a particle moves along the x-axis so that its acceleration at any time t0 is given by a(t) = 12t - 4, At time t = 1, the velocity of the particle is v(1) = 7, and its position is x(1) = 4.

To find the velocity and position of the particle, we need to integrate the acceleration, a(t), and then solve the resulting equations for the constants of integration.

To solve for C, we use the fact that v(1) = 7:v(1) = 6(1)^2 - 4(1) + Cv(1)

= 2 + C

Thus, C is 5. Now, we can write the velocity of the particle as:

v(t) = 6t^2 - 4t + 5

To find the position of the particle, we integrate the velocity.

v(t) = dx(t)/dt ⇒ dx(t)

= v(t)dt∫dx(t)

= ∫v(t)dtx(t)

= ∫(6t^2 - 4t + 5)dt

X(t) = 2t^3 - 2t^2 + 5t + K

where K is the constant of integration. To solve for K, we use the fact that

x(1) = 4:X(1)

= 2(1)^3 - 2(1)^2 + 5(1) + KX(1)

= 5 + K

Thus, K = -1.

Now, we can write the position of the particle as:

X(t) = 2t^3 - 2t^2 + 5t - 1

Hence, the velocity of the particle is v(t) = 6t2 - 4t + 5, and the position of the particle is X(t) = 2t3 - 2t2 + 5t - 1.

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No, it is not possible for a system to have negative potential energy.

Potential energy is a measure of the energy that a system possesses due to its position or configuration relative to other objects in its surroundings. It is a scalar quantity that can be positive or zero, but it cannot be negative.

Potential energy is the energy stored in an object or system due to its position, configuration, or state. It is a form of energy that can be converted into other forms of energy, such as kinetic energy, when the object or system undergoes a change. There are several types of potential energy, including gravitational potential energy, elastic potential energy, electric potential energy, and chemical potential energy.

Gravitational potential energy is the energy stored in an object due to its position in a gravitational field, while elastic potential energy is the energy stored in an object when it is deformed or stretched. Electric potential energy is the energy stored in a system of charged particles, while chemical potential energy is the energy stored in chemical bonds.

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Answer:

Cho hai quả cầu nhỏ trung hòa điện đặt trong không khí, cách nhau 40cm và sử có bốn nhân 10 mũ 12 electron tư quả cầu này di chuyển sang qua câu kia hỏi khi đó hai quả cầu Vũ thấy đầy nhau tỉnh đô lớn của lực đó

 The in vivo investigations using a transgenic mouse model have provided important evidence that supports the role of Msx1 as a regulator of bone formation. These findings contribute to our understanding of how bones develop and grow, which has implications for both developmental biology and potential therapeutic interventions for bone-related conditions.

Msx1 is a regulator of bone formation during development and postnatal growth. This means that it plays a role in controlling the process of bone formation, both during the early stages of development and in the growth that occurs after birth.

In vivo investigations, which involve studying the effects of a particular factor in a living organism, have been conducted using a transgenic mouse model. Transgenic mice are mice that have been genetically modified to have specific genes or traits.

These investigations have provided valuable insights into the function of Msx1 in bone formation. They have shown that when Msx1 is present, it acts as a regulator, controlling the process of bone formation. This means that it helps to ensure that bones develop and grow properly.

One example of how Msx1 functions as a regulator is during the early stages of bone development. It helps to determine the shape and structure of the bones, ensuring that they form correctly.

Another example is in postnatal growth, where Msx1 helps to regulate the growth of bones as the organism continues to develop. It ensures that bones grow at the right rate and in the right direction.

Overall, the in vivo investigations using a transgenic mouse model have provided important evidence that supports the role of Msx1 as a regulator of bone formation. These findings contribute to our understanding of how bones develop and grow, which has implications for both developmental biology and potential therapeutic interventions for bone-related conditions.

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Answer: nun

Explanation:

Answer:

the voltage is the same in all parallel components because by definition you have connected them together with wires that are assumed to have negligible resistance. the voltage at each end of the wire is the same ( ideally ) . so all the components have to have the same voltage.

Answer:

1000000Nm

Explanation:

W=force*distance

   50000*20

The fraction of light from the Sun intercepted and reflected by the Earth is approximately 4.26 x 10⁻⁵.

To calculate the fraction of light from the Sun intercepted and reflected by the Earth, we need to compare the cross-section of the Earth to the area of a sphere centered on the Sun with a radius equal to the radius of Earth's orbit.

The cross-section of the Earth can be calculated as the area of a circle with radius REarth, which is option (c) R Earth.

The area of a sphere centered on the Sun with a radius r is given by 4πr², where r is the radius of the Earth's orbit. Therefore, the area of the sphere centered on the Sun with a radius equal to the radius of Earth's orbit is 4π(149.6 x 10⁶ km)²= 2.83 x 10²³ m².

The ratio of the cross-section of the Earth to the area of the sphere is A1/A2 = πREarth² / 4πr² = (REarth/r)². Using the radius of Earth's orbit in meters, r = 149.6 x 10⁹ m, and the radius of Earth, REarth = 6,371 km = 6.371 x 10⁶ m, we get A1/A2 = (6.371 x 10⁶ m / 149.6 x 10⁹ m)² = 4.26 x 10⁻⁵.

Therefore, by calculating we can say that the fraction of light is approximately 4.26 x 10⁻⁵.

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claim

[klām]

VERB

state or assert that something is the case, typically without providing evidence or proof.

"he claimed that he came from a wealthy, educated family" · [more]

synonyms:

assert · declare · profess · maintain · state · hold · affirm · avow · aver · [more]

NOUN

an assertion of the truth of something, typically one that is disputed or in doubt.

"he was dogged by the claim that he had CIA links" · [more]

synonyms:

assertion · declaration · profession · affirmation · avowal · averment · protestation · representation · contention · submission · case · allegation · pretense · asseveration

a demand or request for something considered one's due.

"the court had denied their claims to asylum"

Answer:

the first person is right at all

Answer:

First, to be a barrier keeping the constituents of the cell in and unwanted substances out and, second, to be a gate allowing transport into the cell of essential nutrients and movement from the cell of waste products.

Explanation:

It has two functions

The distance of ball from the launch point is

0.92 m

Given:

U = 4.5 m/s = initial speed

V = 0.7 m/s = final speed

g = 10 m/s^2 = acceleration due to gravity

To Find:

distance of ball from the launch point

Solution: The law of motion equation

V^2 - U^2 = 2aS

(0.7)^2 - (4.5)^2 = 2*10*S

0.49 - 18.9 = 20S

- 18.41 / 20 = S

S = - 0.92 m

The distance of ball from the launch point is 0.92 m

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Answer:

Time taken to travel remaining 228 miles = 2.4 hours.

Explanation:

So, distance traveled before = 876 - 228 =648 miles. Time taken for this = 6 hours. Speed before speed reduction = 648/6 = 108 mph.