On a frictionless, horizontal air table, puck A (with mass 0.250 kg) is moving to the right toward puck B (with mass 0.350 kg), which is initially at rest. After the collision, puck A has a velocity of 0.120 m/s to the left, and puck B has a velocity of 0.650 m/s to the right. (a) What was the speed of puck A before the collision? (b) Calculate the change in the total kinetic energy of the system that occurs during the collision.

Answer:

Solution in photo

Explanation:

Answer:

atomic weight 20.180

protons 10

neutrons 2,8

Explanation:

A basketball whose mass is 0.540 kg falls from rest through a height of 5.65 m and then bounces back. on its way up it, passes by a height of 3.25 m with a speed of 2.35 m/s. The energy lost during the bounce is: 28.67 Joules

When a basketball is dropped from rest through a certain height and rebounds, it loses energy due to friction, deformation, and air resistance. In this situation, a basketball falls from rest from a height of 5.65 meters and rebounds, passing a height of 3.25 meters with a speed of 2.35 meters per second.

We know that work done W = mgh,

where, m = mass of the ball g = acceleration due to gravity h = height of the ball.

Energy lost during the bounce can be calculated by subtracting the kinetic energy of the ball after the bounce from its initial potential energy. When a ball falls from a certain height, it has initial potential energy due to its position in the earth's gravitational field.

When the ball rebounds, it has a certain kinetic energy that can be calculated using the conservation of energy equation. Therefore, the difference between the ball's initial potential energy and its rebound kinetic energy is the energy lost during the bounce.

Conservation of energy is applicable in this situation because the total energy before and after the bounce must remain constant if no external work is done on the ball. Therefore, we can apply the law of conservation of energy to this situation. The Kinetic Energy of the ball after rebounding can be calculated as:

K.E. = 1/2 mv²

Where, m = mass of the ball, v = velocity of the ball

The potential energy of the ball before rebounding can be calculated as: P.E. = mgh, Where, m = mass of the ball, g = acceleration due to gravity, h = height of the ball

Therefore, the initial potential energy of the ball can be calculated as: \(P.E. = 0.540 kg x 9.8 m/s² x 5.65 mP.E. = 30.2 Joules\)

The ball rebounds and reaches a height of 3.25 m with a speed of 2.35 m/s.

Kinetic Energy of the ball after rebounding can be calculated as:

K.E. = 1/2 mv²

K.E. = 0.5 x 0.540 kg x (2.35 m/s)²

K.E. = 1.53 Joules.

Energy lost during the bounce = Initial Potential Energy - Rebound Kinetic Energy.

Energy lost during the bounce = 30.2 J - 1.53 J

Energy lost during the bounce = 28.67 J

Therefore, the energy lost during the bounce is 28.67 Joules.

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Answer:

Explanation:

V

R t t

V t Q P t t

R R

= ⋅ =

=

⋅ ⋅

= = = ⋅ ⇒ = =

The ratio of the  deflection when each galvanometer is connected with the cell is 13:12.

A moving coil used in a galvanometer is used to measure a small electrical current or a function of the current. The current's forces generate mechanical rotational forces that cause the deflection.

Given that:

EMF of the cell: e = 25 volt.

Internal resistance: r = 50 ohm.

Current flows through first galvanometer: I₁ = 25 /( 10+50) amp = 5/12 amp.

Current flows through second galvanometer: I₂ = 25 /( 600+50) amp = 5/130 amp.

Number of turns in first galvanometer: n₁ = 50

Number of turns in second galvanometer: n₂ = 500

As all other conditions of the two galvanometers are same; the ratio of the deflection  when each galvanometer is connected with the cell =

n₁I₁ : n₂I₂

= 50 (5/12) : 500(5/130)

= 1/12 : 1/13

= 13 : 12.

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Answer:

potential energy because if your on a rolloer coaster wacth the vid

Answer:

gravitational energy

Answer:

Since the wavelength would be reduced by the factor of N where N is the index of refraction, fringes would be be closer to one another.

(Similar to the difference of fringes of red light and blue light.)

Wavelength usually is expressed in units of meters. The symbol for wavelength is the Greek lambda λ, so λ = v/f.

Specifically, if we know the frequency (the number of wave repetitions per second, often expressed in Hertz, or Hz) and the sound speed (the speed at which the wave travels in meters per second), we can calculate the wavelength using the equation wavelength=speed/frequency.

One of the simpler acoustics concepts to grasp is wavelength. It is simply the length of a wave from one peak to the next. If one imagines a sound wave as a water wave, the wavelength is simply the distance from one wave's crest to the next closest crest.

Thus, if the distance between two peaks is one meter, the wavelength is also one meter.

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Answer:

in water its more slower because of the liquid matter but in air its a gas formaiton so its more quicker

Explanation:

Answer:5.45X10^3m

Explanation:So use the formula,v= fλ

3X10^8=5.5X10^4λ what Im saying is divide both and u should get 5454.54m but do sig figs to get answer

Answer:

5.45X10^3m

Explanation:

The magnitude of the magnetic force is approximately \(1.92 * 10^{-15} N\) .

To calculate the magnitude of the magnetic force acting on an electron moving perpendicular to a uniform magnetic field, you can use the formula:

F = q * v * B

where F is the magnetic force, q is the charge of the electron, v is its speed, and B is the magnetic field strength.

For an electron, q = -\(1.6 * 10^{-19}\) C. Given the speed v = \(3.0 * 10^{4}\) m/s and magnetic field B = 0.40 T, the magnetic force can be calculated as:

F = (-\(1.6 * 10^{-19}\) C) * (\(3.0 * 10^{4}\) m/s) * (0.40 T)

F ≈ -\(1.92 * 10^{-15} N\)

Since we're interested in the magnitude of the force, we can ignore the negative sign and say:

The magnitude of the magnetic force is approximately\(1.92 * 10^{-15} N\)

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Answer:

3 meters per second

Explanation:

72 divided by 3= 24 meters in 8 seconds

24/8= 3, so 3 meters per second

The Dynamic Systems Theory (DST) of motor development proposes that developmental changes result from a complex interplay of many forces rather than from the acquisition of particular steps or stages.

The core idea of the DST is that sophisticated movements like walking do not appear all at once, but rather evolve through gradual changes in the underlying components of the behavior, such as changing muscle activity, improved posture and a decrease in the number of errors made. According to the DST, the appearance of developmental accomplishments is the result of subtle interactions between cognitive strategies, motor activities, environmental conditions and the individual's set of motor skills.

To put it another way, the DST is about learning to coordinate sophisticated behaviors in response to the changing requirements of the task, the environment, and one's own motor abilities. Ultimately, the DST helps explain motor development by viewing it as part of an overarching and evolving system comprised of multiple parts and influences.

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Complete question is :

explain what is according to the dynamic systems theory of motor development?

Answer:

100 cm

Explanation:

Answer:

4.64

Explanation:

The cube root of 100 is 4.64.

Answer:

My believe the answer is

A.) or B.)

Explanation:

Here is why I think A is the answer.

If we use the process of elimination, it would look like this,

a) Porque el aire tiene una temperatura menor que la de su cuerpo; por eso se propaga más rápido.

This makes sense because we all know in winter the weather is very cold and freezing.

b) Porque la temperatura de su cuerpo, siente el aire frio que entra por la ventana.

I feel like this answer is the question, but it could also be an answer, sorry, I'm a little uncertain.

c) Porque el calor de su cuerpo se propaga al medio ambiente, al ser la temperatura del niño mayor que la del aire exterior.

This answer has nothing to do with the question, plus it is very false, our body heat is not enough to overcome the very cold temperature from outside.

d) Porque la temperatura del aire es igual a la temperatura del cuerpo.

This is false because again our body heat is not even compared to the freezing cold temperatures from the winter.

The potential difference between two points is the work done per unit charge required to move a positive test charge from one point to the other. This concept is important in many fields, including electrochemistry and electrical engineering.

The formula for potential difference is ΔV = Ed, where ΔV is the potential difference, E is the electric field between the plates, and d is the distance between them.
Given that the electric field between the plates has a magnitude of 1.9×105 V/m, we can find the potential difference between the plates by multiplying this value by the distance between them. However, we do not have information about the distance between the plates in the question. Therefore, we cannot calculate the potential difference between the plates using the information given.
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Answer:

\(F_{elect} = \frac{kq_1q_2}{d^2}\)

Explanation:

Consider the given variables:

Felect = Electrostatic Force between charged particles

k = Coulomb's Constant

q₁ = magnitude of first charge

q₂ = magnitude of second charge

d = distance between the charges

The relationship among these variables is given by the Coulomb's Law:

\(F_{elect} = \frac{kq_1q_2}{d^2}\)

This is the relationship that contains k, q₁, q₂, d on the right-hand side and Felect on the left-hand side.

To find the Thevenin voltage (VTh) without using Kirchhoff's voltage law (KVL) or Kirchhoff's current law (KCL), we can apply the voltage divider rule. The voltage divider rule states that the voltage across a resistor in a series circuit is proportional to its resistance.

In Figure 8-82, we need to determine the current through the load RL. To do this, we first find the Thevenin voltage (VTh) which is the open-circuit voltage across the load terminals. Here's how we can find it using the voltage divider rule:

Identify the two resistors in series: The 5.6 kQ resistor and the 15 kQ resistor.
Calculate the total resistance (RT) of the series combination: RT = 5.6 kQ + 15 kQ = 20.6 kQ.
Identify the resistor across which you want to find the voltage: In this case, it is the 15 kQ resistor.
Apply the voltage divider rule: \(VTh = (R2 / (R1 + R2)) * VSource\).
  - Substitute the values: \(VTh = (15 kQ / (5.6 kQ + 15 kQ)) * 32 V\).
  - Simplify the expression:\(VTh = (15 kQ / 20.6 kQ) * 32 V\).
  - Calculate VTh:\(VTh ≈ 23.44 V\).
Therefore, the Thevenin voltage (VTh) is approximately 23.44 V.
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According to the question, the change in pressure for the jetstream is  14.54Pa.

The force applied perpendicularly to an object's surface expressed as a symbol (p or P) is the force divided by the area of the object's surface. The pressure when compared to the surrounding air pressure is known as gauge pressure. Pressure is expressed using a number of different units. The SI unit of pressure, the pascal (Pa), for instance, is equal to one newton per square meter (N/m²). Some of these measurements are the result of dividing a unit of force by a unit of area.

Explanation:

Given;

jet's diameter,d = 10⁻²m

temperature, t = 20°C

Surface tension acts only on the lines AB and CD.

Consider the equilibrium of forces;

∑F = 0

P₁-P₀ = 2σ/d

here surface tension σ = 0.0727 N/m

P₁-P₀ = 2×0.0727/10⁻²

        = 14.54 Pascal

Hence, the change in pressure of the jetstream is 14.54 Pascal.

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The acceleration of the bucket at the bottom of the loop in gravity is 36.00 m/s², the net force is 54.00 N, and the individual forces of the rope are both 27.00 N.

Gravity is a natural phenomenon by which all things with mass are brought toward one another. It is most commonly experienced as the force that gives weight to physical objects and causes them to fall toward the ground when dropped.

We need to use Newton's second law of motion: F = ma

Where F is the net force, m is the mass of the bucket, and a is the acceleration.

Since we know the mass (1.50 kg) and the speed (6.00 m/s) of the bucket at the bottom of the circular loop, we can calculate the acceleration. To do this, we will use the equation: a = v²/r

Where v is the velocity (speed) and r is the radius of the circular loop (1.00 m).

Therefore, the acceleration of the bucket at the bottom of the loop is:

a = (6.00 m/s)2/1.00 m = 36.00 m/s²

Now that we know the acceleration, we can calculate the net force. Using Newton's second law of motion, we have: F = ma

Therefore, the net force is: F = (1.50 kg)(36.00 m/s²) = 54.00 N

Finally, we can calculate the individual forces. Since we know the net force (54.00 N) and the mass (1.50 kg) of the bucket, we can calculate the individual forces of the rope. To do this, we will use the equation:

F1 + F2 = Fnet

Where F1 and F2 are the individual forces, and Fnet is the net force.

Therefore, the individual forces of the rope are: F1 + F2 = Fnet

F1 + F2 = 54.00 N

F1 = 27.00 N

F2 = 27.00 N

Therefore, the acceleration of the bucket at the bottom of the loop is 36.00 m/s2, the net force is 54.00 N, and the individual forces of the rope are both 27.00 N.

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Let's calculate the equivalent resistances on both circuits.

On Diagram A we have a series connection of the resistors. The equivalent resistance will be the sum of all resistances:

\(R_{eq}=1+1+1\\\\\boxed{R_{eq}=3\Omega}\)

On diagram B we have a parallel connection of the resistors. The reciprocal of the equivalent resistance will be the sum of the reciprocals of all the resistances:

\(\frac{1}{R_{eq}} = \frac{1}{1} +\frac{1}{1} +\frac{1}{1} \\\frac{1}{R_{eq}}=3\\\\\boxed{R_{eq}=\frac{1}{3}}\)

Therefore, the larger resistance occurs on diagram A.

For the current, recall

\(V=IR\)

Where \(I\) stands for current \(R\) is the resistance and \(V\) is the voltage. Rearranging the equation we have

\(I = \frac{V}{R}\)

We can see that the larger the resistance, the smaller the current gets. So the larger current must happen in the diagram with smaller resistance. Therefore, the larger current occurs on diagram B.

Glad to help, wish you great studies ;)

Mark brainliest if you deem the answer worthy

Answer:

El área de la placa es aproximadamente 5102.752 centímetros cuadrados.

Explanation:

Asumamos que el cambio dimensional como consecuencia de la temperatura es pequeña, entonces podemos estimar el área de la placa de cobre en función de la temperatura mediante la siguiente aproximación:

\(A_{f} = w\cdot l \cdot [1 + 2\cdot \alpha\cdot (T_{f}-T_{o})]\) (1)

Donde:

\(w\) - Ancho de la placa, en centímetros.

\(l\) - Longitud de la placa, en centímetros.

\(\alpha\) - Coeficiente de dilatación, en \(\frac{1}{^{\circ}C}\).

\(T_{o}\) - Temperatura inicial, en grados Celsius.

\(T_{f}\) - Temperatura final, en grados Celsius.

Si sabemos que \(w = 65\,cm\), \(l = 78\,cm\), \(\alpha = 17\times 10^{-6}\,\frac{1}{^{\circ}C}\), \(T_{o} = 20\,^{\circ}C\) and \(T_{f} = 400\,^{\circ}C\), entonces el área de la placa a la temperatura final:

\(A_{f} = (65\,cm)\cdot (78\,cm)\cdot \left[1+\left(17\times 10^{-6}\,\frac{1}{^{\circ}C} \right)\cdot (400\,^{\circ}C-20\,^{\circ}C)\right]\)

\(A_{f} = 5102.752\,cm^{2}\)

El área de la placa es aproximadamente 5102.752 centímetros cuadrados.

Answer:

dehydration, lots of sweating, heat stroke, heat exhaustion: nausea, dizziness, vomitting, diahreaa, headache

Explanation:

The answer is D. distance between trough and crest. Wavelength is the distance between two consecutive points of the same phase on a wave, such as two adjacent crests, troughs, or zero crossings.

Wavelength is the distance between two consecutive points of the same phase on a wave, such as two adjacent crests, troughs, or zero crossings. So the answer is the distance between the trough and crest.

The other options are incorrect. Option A is the length of time the wave has been in motion, which is not the same as wavelength. Option B is the distance between the trough and the trough, which is half of the wavelength. Option C is the distance between the quiet water level and the crest, which is not a physical measurement of the wave.

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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

Answer:

please take clean picture

When Jack argues with the umpire over a call in baseball, he is showing poor sportsmanship.The correct answer is option B.

Poor sportsmanship refers to behavior that violates the principles of fair play, respect, and integrity in sports. It encompasses actions such as arguing, complaining, or displaying disrespectful behavior towards officials, opponents, or teammates.

Engaging in a dispute with the umpire goes against the spirit of sportsmanship, as it undermines the authority and impartiality of the officials.

Sportsmanship encourages players to accept the decisions made by referees or umpires, even if they may disagree. It promotes respect for the game, its rules, and the individuals responsible for enforcing them.

Arguing with the umpire can also create a negative atmosphere and set a poor example for others, particularly younger players who may be observing the game.

It can lead to increased tension, disrupt the flow of the game, and even escalate into more serious conflicts.

In summary, Jack's behavior of arguing with the umpire demonstrates poor sportsmanship, as it disregards the principles of fair play, respect, and acceptance of officiating decisions.

Encouraging a more positive and respectful approach to resolving disagreements would contribute to a healthier sports environment.

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The probable question may be:

Jack is playing baseball and disagrees with the umpire's call. He argues with the umpire. What is Jack showing?

A. Enthusiasm

B. Poor sportsmanship

C. Diversity

D. Bad form

The type of galaxy which has arms that contain sites of active star formation and start close to a bulge in the center is: D. normal spiral.

A star can be defined as a giant celestial (astronomical) object that is made up of a luminous sphere of plasma bounded together by its own gravitational force.

Generally, a star comprises two (2) main interstellar hot gases and these include:  

I. Hydrogen (H).

II. Helium (He).

A galaxy refers to a collection of billions of stars, which are existing independently.

This ultimately implies that, the greatest number of stars are found in a galaxy.

According to astronomers, the galaxy is classified into four (4) main categories and these are:

Furthermore, spiral galaxies are divided into two (2) major groups such as:

I. Barred spiral.

II. Normal spiral.

A normal spiral is typically made up of arms containing sites of active star formation and it start close to a bulge in the center.

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Answer:

D) normal spiral

Explanation:

Whoever answered it practically wrote a life story. There's no need for an explanation; just get to the point and tell us the answer. But anways, the answer is D.