A wooden block is sitting on an inclined plane near the bottom. The student gave the block a flick and it moved up the inclined plane then stopped. It is expected that the block to start sliding back down the inclined plane but it did not. It just sat there near the top. What is your explanation why the block stopped and did not begin sliding again?

Answer:

Both balls have the same downward acceleration (and speed)

A cue ball of mass 0.11 kg is moving to the right at a speed of 6 m/s and collides with a 7 ball of mass 0.1 kg, initially at rest. If the 7 ball moves to the right with a speed of 3 m/s after the collision, after the collision, the cue ball is moving to the right with a speed of approximately 3.27 m/s.

We can use the principle of conservation of momentum. The total momentum before the collision must equal the total momentum after the collision.
Step 1: Calculate the initial momentum of both balls before the collision.
Initial momentum of cue ball = mass x initial speed = 0.11 kg x 6 m/s = 0.66 kg m/s
Initial momentum of 7 ball = mass x initial speed = 0.1 kg x 0 m/s = 0 kg m/s
Total initial momentum = 0.66 kg m/s
Step 2: Calculate the final momentum of the 7 ball after the collision.
Final momentum of 7 ball = mass x final speed = 0.1 kg x 3 m/s = 0.3 kg m/s
Step 3: Determine the final momentum of the cue ball after the collision.
Since the total initial momentum must equal the total final momentum, the final momentum of the cue ball = total initial momentum - final momentum of 7 ball = 0.66 kg m/s - 0.3 kg m/s = 0.36 kg m/s
Step 4: Calculate the final speed of the cue ball after the collision.
Final speed of cue ball = final momentum / mass = 0.36 kg m/s / 0.11 kg ≈ 3.27 m/s
So, after the collision, the cue ball is moving to the right with a speed of approximately 3.27 m/s.

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Answer:

yes kinetic energy will be affected it will get increased 16 times.

Explanation:

The frequency that a person at point A hears will be different from the original frequency if the source of the sound is moving relative to the person. This is known as the Doppler effect.

Generally, If the source of the sound is approaching the person, the frequency will be higher (known as a "blue shift"), and if the source is moving away from the person, the frequency will be lower (known as a "red shift").

The speed and direction of the motion, as well as the speed of sound, will determine the exact change in frequency.

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Answer:

The remaining lights would shine with the same brightness.

Explanation:

Answer:

Explanation:

I included proof that A is the right answer. Hope this helps!

so the value of wavelength λ=0.75*10^4 m

Answer:

yes

Explanation:

Answer:

gravitational constant

Explanation:

When a solenoid carrying a current I is moving towards a metal ring, a current is induced in the ring in a direction that opposes the change in magnetic.

If the solenoid stops moving towards the ring, but the current in it begins to decrease, the magnetic field produced by the solenoid will also decrease. To oppose this decrease in flux, the induced current in the ring must create a magnetic field that points in the same direction as the field created by the solenoid.

According to Lenz's law, the induced current creates a magnetic field that opposes the motion of the solenoid.

Since the solenoid is moving towards the ring, the magnetic flux through the ring is increasing. To oppose this increase in flux, the induced current in the ring must create a magnetic field that points in the opposite direction to the field created by the solenoid. Therefore, the induced current in the ring will flow counterclockwise as seen from the solenoid.

The induced current in the ring will flow clockwise as seen from the solenoid.

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Answer:

A

Explanation:

Answer:

Potential difference, V = -0.000224 Volts

Explanation:

Given the following data;

Quantity of charge = 6.93*10-4 C

Energy = -3.09 J

To find the electric potential V at that point?

Mathematically, the energy transferred per unit of charge is given by the formula;

E = QV

Where:

E is the energy

Q is the quantity of charge

V is the potential difference.

Substituting into the formula, we have;

\( -3.09 = 6.93*10^{-4} * V \)

\( V = \frac {6.93*10^{-4}}{-3.09} \)

Potential difference, V = -0.000224 Volts

Answer:

Its temperature

Explanation:

Answer:

The stars age

Explanation:

As stars age, they run out of hydrogen to burn, decreasing the amount of energy they give off. So the younger stars can look bluer while older ones look more red.

Hope this helps :3

Answer:

C. motion

Explanation:

hope this helps u!!

Answer:

Motion.

Explanation:

When you move your body changes positions and every way you go, left, right, or if you just walk straight.

Mark brainliest plas

Answer:

1500N

Explanation:

Therefore, the maximum speed of the emitted electrons is 1.62 x 10⁶ m/s.

The photoelectric effect is observed on two metal surfaces. If light of wavelength 300.0 nm is incident on a metal that has a work function of 2.80 eV, the maximum speed of the emitted electrons is 1.62 x 10⁶ m/s. What is the photoelectric effect? The photoelectric effect, also known as the Hertz–Lenard effect, is a phenomenon in which electrons are emitted from a metal surface when light is shone on it. The photoelectric effect was initially studied by Heinrich Hertz in 1887 and later by Philipp Lenard in 1902.Latex-free answer: To calculate the maximum speed of emitted electrons using the photoelectric effect equation, we can use the following formula: KEmax = hν - φwhere KE max is the maximum kinetic energy of the ejected electron, h is Planck's constant, ν is the frequency of the incident light, and φ is the work function of the metal. Using the equation, we can convert the given wavelength of 300.0 nm to frequency by using the formula c = λν where c is the speed of light and λ is the wavelength. c = λνν = c/λν = (3.0 x 10⁸ m/s) / (300.0 x 10⁻⁹ m)ν = 1.0 x 10¹⁵ Hz, Now we can plug in the values in the equation: KE max = (6.626 x 10⁻³⁴ J s) (1.0 x 10¹⁵ Hz) - (2.80 eV)(1.60 x 10⁻¹⁹ J/eV)KE max = 1.06 x 10⁻¹⁹ J - 4.48 x 10⁻¹⁹ JKE max = -3.42 x 10⁻¹⁹ J. Since KE max is a positive value, we can convert the value to speed using the equation KE = 1/2mv² where m is the mass of the electron and v is the velocity of the electron: v = √(2KE/m)v = √[(2)(3.42 x 10⁻¹⁹ J)/(9.11 x 10⁻³¹ kg)]v = 1.62 x 10⁶ m/s. Therefore, the maximum speed of the emitted electrons is 1.62 x 10⁶ m/s.

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Answer:

The total force is \(F_{tot}=4.29\: N\)

The direction is \(\omega=32.43^{\circ}\)

Explanation:

First, we need to find the angle with respect to the horizontal, of the force between q2 (-2 μC) and q3 (3 μC).

Let's use the tangent function.

\(tan(\alpha)=\frac{2}{1.5}\)

\(\alpha=53.13^{\circ}\)  

Now, let's find the magnitude of the force F(12).

\(|F_{12}|=k\frac{q_{1}q_{2}}{d_{12}}\)

Where:

\(|F_{12}|=9*10^{9}\frac{3*10^{-6}*2*10^{-6}}{0.015}\)

\(|F_{12}|=3.6\: N\)

The magnitude of the force F(23) will be:

\(|F_{23}|=k\frac{q_{2}q_{3}}{d_{23}}\)

The distance between these charges is:

\(d_{23}=\sqrt{1.5^{2}+2^{2}}\)

\(d_{23}=2.5\: m\)

\(|F_{23}|=9*10^{9}\frac{2*10^{-6}*4*10^{-6}}{0.025}\)

\(|F_{23}|=2.88\: N\)

So, we have the force F(12) in the second quadrant and F(23) in the second quadrant too but with 53.13 ° with respect to the horizontal.

We just need to add these two forces (vectors) and get the total force acting on q2.

Total force in x-direction:

\(F_{tot-x}=-F_{12}-F_{23}cos(53.13)\)

\(F_{tot-x}=-3.6-2.88cos(53.13)\)

\(F_{tot-x}=-5.33\: N\)

Total force in y-direction:

\(F_{tot-y}=F_{23}sin(53.13)\)

\(F_{tot-y}=2.88sin(53.13)\)

\(F_{tot-y}=2.3\: N\)

Therefore, the magnitude of the total force will be:

\(|F_{tot}|=\sqrt{(-3.62)^{2}+(2.3)^{2}}\)

\(|F_{tot}|=4.29\: N\)

and the direction is:

\(tan(\omega)=\frac{2.30}{3.62}\)

\(\omega=32.43^{\circ}\)

I hope it helps you!

Answer:

Explanation:

Field characteristics

The strength of the field at the Earth's surface ranges from less than 30 microteslas (0.3 gauss) in an area including most of South America and South Africa to over 60 microteslas (0.6 gauss) around the magnetic poles in northern Canada and south of Australia, and in part of Siberia.

Answer:

30 m/s

Explanation:

Answer:

The speed is equal to Distance divided by Time.

The SI Unit of Speed is m/s or meters per second.

V = S/T

= 750/25

= 30 m/s

Answer:

Explanation:

By being close to an atom that will gladly take the electrons being offered.

Suppose you are talking about Be. It is in the second column. It has two outer electrons that can be given away. It will not give away one of the two remaining electrons because they are too close to the + nucleus.

Along comes a Fluorine atom. It has 7 electrons in its outer ring. The chemistry of the situation allows it to take on one of the two electrons Be is offering. It is all a matter of charges and attractions.

Another Fluorine atom will take on the remaining electron from the Be. The outer ring cannot take on more than 1 electron, but that is enough

The time it takes the sound wave to travel to and fro through 2000 m is 11.66 seconds.

A sound wave is the pattern of disturbance caused by the movement of energy traveling through a medium.

To calculate the time it takes the sound wave to travel, we use the formula below

Formula:

Where:

From the question,

Substitute these values into equation 1

The time it takes is 11.66 seconds.

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Answer:

1. He feels worse off.

2. His awareness of the grim situation.

Explanation:

Elie Weisel's memoir "Night" is about the persecution of the jews by the Germans during the worst genocide in world history. The events leading up to the Holocaust and the resulting after-effects through his personal experience provides one of the most prominent witness accounts of the crime.

When Weisel states that "lying down wasn't an option", he reveals how congested space was in the cabin. The "lucky ones" were able to breathe in the fresh air from the window, while the rest have to be satisfied with wherever they are. This reveals his realization of the grim situation inside the over-packed cabin, where there is hardly any space to move.

And when he said that they "never ate enough to satisfy our hunger", he presents the realization and understanding of the grim situation in the train's cabin where eating is not a luxury, but a necessity to stay alive. And for that, they know they have to "economize, to save for tomorrow" rather than just stay full once.  

Answer:

1. He feels worse off.

2. His awareness of the grim situation.

Explanation:

The material used before doubling will produce light at a frequency of 0.056 Hz.

The number of times a wave occurs repeatedly in a second is known as frequency.

The formula provides the frequency as,

\(\rm v = \lambda \times f \\\\\ \rm f = \frac{v}{\lambda} \\\\ \rm f = \frac{3 \times 10^8}{532 \times 10^-9} \\\\ \rm f = 3 \times 10^{12} \\\\ f= 0.056 \ Hz\)

Therefore, the material used before doubling will have an output light frequency of 0.056 Hz.

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A free body diagram is a diagram that shows the direction of the forces that are acting on a body.

A free body diagram is a diagram that shows the direction of the forces that are acting on a body. We know that force is a vector quantity. This implies that the magnitude and the direction of a force are equally important when we are dealing with the forces.

Now, in a thug of war, there are two forces that are acting on the rope. The forces acts from the opposite ends in which the rope is being pulled. The rope would move in the direction in which the pulling that is exerted is found to be of greater magnitude.

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As the rollercoaster moves from point A to point B, the correct answer is option c: The kinetic energy increases and the potential energy decreases.

At point A, the rollercoaster is at its highest position, which corresponds to the maximum potential energy and minimum kinetic energy. As the rollercoaster moves downwards towards point B, it gains speed and its height decreases.

This results in a decrease in potential energy since the height is decreasing. At the same time, the rollercoaster's speed increases, leading to an increase in kinetic energy.

The conservation of energy principle states that the total mechanical energy (the sum of potential energy and kinetic energy) of a system remains constant in the absence of external forces.

In this case, as the rollercoaster moves from point A to point B, the decrease in potential energy is equal to the increase in kinetic energy, keeping the total mechanical energy constant.

Therefore, the correct answer is option c: The kinetic energy increases and the potential energy decreases.

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Given:

The mass on the table is,

The hanging mass is,

THe coefficient of friction is,

let the acceleration of the whole system is a (for the hanging mass it is downward and for the mass on the table it is rightward). the tension towards The fixed point of the pulley is T.

we can write,

Adding these equations we get,

Substituting the values we get,

Hence the acceleration is 6.66 m/s^2.

Answer liquid pressure is not same at all places

Explanation:

Liquid pressure increases with decreasing height as the lower you go, the more is the pressure exerted by the column of liquid above. The liquid pressure is the higher at low depth.ex. In the depths of the seas and oceans.

we can equate the two quantities of heat to find c: m_water * c_water * ΔT = m_material * c * ΔT, c = (m_water * c_water * ΔT) / (m_material * ΔT)

the above expression yields c = 0.20 kcal/kg * C°.

The formula for calculating the specific heat (c) of a material is:

ΔQ = m * c * ΔT

c = ΔQ / (m * ΔT)

ΔT = 100°C - 40°C = 60°C

m_water = 100 gΔQ = m_water * c_water * ΔT = 100 g * 1.00 kcal/kg * ΔT

m_material = 50 g

ΔT = 40°C - 0°C = 40°C

ΔQ = m_material * c * ΔT

So, we can equate the two quantities of heat to find c:

m_water * c_water * ΔT = m_material * c * ΔT

c = (m_water * c_water * ΔT) / (m_material * ΔT)

the above expression yields  temperature c = 0.20 kcal/kg * C°.

The first container's mass and temperature are multiplied together, and the result is added to the second container's mass and temperature to determine the mixture's water temperature. Finally, divide that outcome by the combined water masses in each container.

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