Two billiard balls of equal mass move at right angles and meet at the origin of an xy coordinate system. One is moving upward along the y axis at 2.1 m/s and the other is moving to the right along the x axis with speed 3.8 m/s. After the elastic collision, the second ball is moving along the positive y axis. What is the final direction of the first ball, and what are their two speeds?

Answer:

e

Explanation:e

Both of the boys have equal potential energy when they reach the first floor.

The energy that an item has or acquires when its location changes as a result of being in a gravitational field is known as gravitational potential energy. Gravitational potential energy can be defined as an energy that has a connection to gravitational force or gravity.

Let, the mass of two boys be m.

Height of the first floor be h.

Then, the potential energy of boy A at first floor: E₁ = mass × acceleration due to gravity × height = mgh.

And the potential energy of boy B at first floor: E₂ = mass × acceleration due to gravity × height = mgh.

Hence,  E₁ = E₂ =  mgh.

So, potential energies of both boy A and boy B are same in magnitude.

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It produces oceanic crust,

Explanation:

Natural selection is the process through which populations of living organisms adapt and change. Individuals in a population are naturally variable, meaning that they are all different in some ways. This variation means that some individuals have traits better suited to the environment than others

This equation assumes that the eyeball is a simple harmonic oscillator and that the musculature acts as a linear spring. The frequency of the vibration (f) is equal to the natural frequency of the eyeball's oscillation and the mass (m) is the mass of the eyeball.

The frequency is the rate or number of occurrences of a particular event or phenomenon with respect to its occurrence within a given period of time. It is typically measured in cycles per second (hertz), or the number of times an event occurs in a given period of time. Frequency can also refer to the rate at which something is repeated, such as the number of times a sound is repeated in a given span of time. Frequency can also refer to the number of times a certain action is performed, such as the number of times a person visits a store in a given month.

The effective spring constant of the musculature attached to the eyeball is equal to the frequency squared (f^2) multiplied by the mass (m) divided by 4pi^2:

k = f^2 m / 4pi^2

k = (29 Hz)^2 (7.5 g) / (4(3.14)^2)

k = 0.395 N/m (2 sig figs)

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Equation \(\\k = 0.395 N/m (2 sig figs)\) assumes that the eyeball is a simple harmonic oscillator and that the musculature acts as a linear spring.

The frequency of the vibration (f) is equal to the natural frequency of the eyeball's oscillation and the mass (m) is the mass of the eyeball.

The frequency is the rate or number of occurrences of a particular event or phenomenon with respect to its occurrence within a given period of time. It is typically measured in cycles per second (hertz), or the number of times an event occurs in a given period of time. Frequency can also refer to the rate at which something is repeated, such as the number of times a sound is repeated in a given span of time. Frequency can also refer to the number of times a certain action is performed, such as the number of times a person visits a store in a given month.

The effective spring constant of the musculature attached to the eyeball is equal to the frequency squared (f^2) multiplied by the mass (m) divided by 4pi^2:

\(k = f^2 m / 4\pi^2\\k = (29 Hz)^2 (7.5 g) / (4(3.14)^2)\\k = 0.395 N/m (2 sig figs)\)

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Explanation:

On a position vs time graph (x vs t), displacement is the difference in positions (Δx = x₂ − x₁).

On a velocity vs time graph (v vs t), displacement is the area under the graph (Δx = ∫ v dt).

The longest wavelength of electromagnetic radiation that can eject a photoelectron from this metal is 756.9 nanometers.

To determine the longest wavelength of electromagnetic radiation that can eject a photoelectron from a metal, we can use the equation:

λ = hc / E

where λ is the wavelength, h is the Planck's constant (6.62607015 × 10^(-34) J·s), c is the speed of light (2.998 × 10^8 m/s), and E is the energy required to eject a photoelectron, which is the work function of the metal.

Given that the work function of the metal is 5.15 eV, we need to convert it to joules:

1 eV = 1.60218 × 10^(-19) J

Therefore, the work function in joules is:

5.15 eV * (1.60218 × 10^(-19) J/eV) = 8.24577 × 10^(-19) J

Now we can substitute the values into the equation:

λ = (6.62607015 × 10^(-34) J·s * 2.998 × 10^8 m/s) / (8.24577 × 10^(-19) J)

Calculating this expression gives us:

λ = 7.569 × 10^(-7) meters

To convert the wavelength to nanometers, we multiply by 10^9:

λ = 7.569 × 10^(-7) meters * 10^9 nm/meter

λ = 756.9 nm

Therefore, the longest wavelength of electromagnetic radiation that can eject a photoelectron from this metal is approximately 756.9 nanometers.

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Answer:

94

Explanation:

173 - 79 = 94

The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus. The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z).

Mass number given: 173

Gold Atomic number: 79

Neutrons: 94

Answer:

B. 1/2,000 that of a proton

Explanation:

the mass of an electron is 9.1093837015 × 10−31 kg, this in only 1/2,000 that of a proton.

Answer:

D. the same as a proton

Explanation:

um just trust me lol

The wavelength of the emitted photon is 5.48 x 10^-17 m, and the mass of the particle is 1.05 x 10^-26 kg.

The energy levels of a particle in a one-dimensional box are given by:

En = (n^2 * h^2)/(8mL^2)

where n is the quantum number, h is Planck's constant, m is the mass of the particle, and L is the length of the box.

We are given En = 51.5 MeV and En+1 = 74.2 MeV, and L = 10 fm.

Using En, we can find the mass of the particle:

m = (n^2 * h^2)/(8L^2 * En)

m = (5^2 * (6.626 x 10^-34 J s)^2) / (8 * (10 x 10^-15 m)^2 * (51.5 x 10^6 eV) * (1.602 x 10^-19 J/eV))

m = 1.05 x 10^-26 kg

Now, we can find the wavelength of the photon emitted in the n+1 to n transition using the formula:

ΔE = Efinal - Einitial = hc/λ

where ΔE is the energy difference between the two levels, h is Planck's constant, c is the speed of light, and λ is the wavelength of the emitted photon.

ΔE = En+1 - En = 74.2 MeV - 51.5 MeV = 22.7 MeV

Converting MeV to joules:

ΔE = 22.7 MeV x (1.602 x 10^-13 J/MeV) = 3.63 x 10^-12 J

Plugging in the values, we get:

λ = hc/ΔE

λ = (6.626 x 10^-34 J s) * (3.00 x 10^8 m/s) / (3.63 x 10^-12 J)

λ = 5.48 x 10^-17 m

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Answer: 1.2 watt , 400 watt

Explanation:

1. The formula for calculating Power when voltage and current are given:

\(P = V^{2} /R\)

Now, to find R (resistance) we use the values that are given and get;

\(R = \frac{V}{I}\) =  24/0.05 = 480 ohms

So, the Power of this circuit is :

P = (24)^2 / 480 = 1.2 Watt

2. The formula for calculating Power when current and resistance are given:

\(P = I^{2} *R\)

Using the values given we get;

P = (2)^2*100 = 400 Watt

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A) The equations relating v, H, D, t are H = 1/2 g t² and v = D/t.

B) The equation expresses D in terms of v, H, fundamental constants, and not time is D = v √(2H/g).

Velocity of the object is represented as v.

Initial height is H

Horizontal distance travelled is D.

Time of the object in a projectile is t.

A) From the equations of kinematics, we can write,

H = 1/2 g t²

v = D/t

where,

g is acceleration due to gravity

B) From the two equations above, we have,

t = D/v ---(1)

H = 1/2 g t² ---(2)

Putting (1) in (2),

H = 1/2 g t² = 1/2 g (D/v)²

D = v √(2H/g)

Thus, the required equations are explained.

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The largest voltage the battery can have without breaking the circuit at the supports is 626.71 V.

The magnetic field on a current-carrying conductor is determined by the flow of current through the conductor and the distance from the carrier.

Voltage is the pressure exerted by an electrical circuit’s power source through a conducting loop to push charged electrons (“current”) through an electrical circuit to perform a function, such as turning on a light.

Given,

The length of the metal bar = 54.0 cm or 0.54 m

mass of the bar = 740 g or 0.74 kg

magnetic field acting perpendicular to the bar = 0.450 T

resistance  = 26.0

Let the maximum potential in the battery be V and the current in the circuit be I. So

V= IR

V = 26×I

I = V/21

For the rod to be in its position the magnetic force on the rod must be equal to the weight. So

magnetic force = weight

B×I×L = mg

0.45 × V/21 × 0.54 m =  0.74 × 9.8

V = 626.71 V

Thus the largest voltage the battery can have without breaking the circuit at the supports is 626.71 V.

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Answer:

0.969 s  (3 s.f.)

Explanation:

Constant Acceleration Equations (SUVAT)

\(\boxed{\begin{array}{c}\begin{aligned}v&=u+at\\\\s&=ut+\dfrac{1}{2}at^2\\\\ s&=\left(\dfrac{u+v}{2}\right)t\\\\v^2&=u^2+2as\\\\s&=vt-\dfrac{1}{2}at^2\end{aligned}\end{array}} \quad \boxed{\begin{minipage}{4.6 cm}$s$ = displacement in m\\\\$u$ = initial velocity in ms$^{-1}$\\\\$v$ = final velocity in ms$^{-1}$\\\\$a$ = acceleration in ms$^{-2}$\\\\$t$ = time in s (seconds)\end{minipage}}\)

When using SUVAT, assume the object is modeled as a particle and that acceleration is constant.

Acceleration due to gravity:  g = 9.8 ms⁻²

Resolving vertically, taking up as positive:

\(\begin{aligned}\textsf{Using} \quad v&=u+at:\\\\0&=9.5+(-9.8)t\\-9.5&=-9.8t\\t&=\dfrac{-9.5}{-9.8}\\t&=0.9693877551\\\implies t&=0.969\; \sf s\;(3\:s.f.)\end{aligned}\)

Therefore, it takes 0.969 s (3 s.f.) for the tennis ball to teach the top of its trajectory.

Answer:

nuclear fission

The rate of molecular motion will increase as the temperature rises. At the same temperature, an object with less massive molecules will have a faster molecular speed. Two objects with the same average kinetic energy will have the same temperature when kinetic temperature is applied.

The relationship between the velocity of a spinning object squared and the centripetal force applied to it is that the centripetal force is directly proportional to the square of the velocity.

A centripetal force can be defined as the force that makes a body follow a curved path. It is the name given to any force that causes a change in direction of velocity towards the center of the circular motion.

The formula for centripetal force can be given as;

Centripetal force = mv² / r

Here v represents the velocity, therefore this shows that the centripetal force is directly proportional to the square of the velocity.

This means that the centripetal force increases with the increase in the square of the velocity and decreases with the decrease in the square of the velocity.

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If a warm air mass is located in the southwest united states and a cold air mass is located in the southeast united states, from west to east direction will the winds blow.

The prevailing westerlies blow from west to east, meaning that if a warm air mass is located in the southwest United States and a cold air mass is located in the southeast United States, the winds will blow eastward.

Therefore, from the east, the winds will blow. The winds will blow from the direction in which the pressure gradient force directs them.

The pressure gradient force is perpendicular to the isobars and directed from higher to lower pressure.

Wind is deflected to the right in the Northern Hemisphere and to the left in the Southern Hemisphere as a result of the Coriolis force, which is a consequence of the Earth's rotation.

The prevailing westerlies are winds that blow west to east between 30° and 60° latitude in both hemispheres.

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Answer:

Explanation:

the net force on the right left is 25 N and is directed upward

the net force on the left one is zero because 200N force act upward and 200N force act downward so both cancel each other and net force is zero

i hope this will help you

The net force on the right left is 25 N and is directed upward.

The net force on the left one is zero because 200 N force act upward and 200 N force act downward so both cancel each other and net force is zero.

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

By looking at both figure we get idea of net force after calculation,

The net force on the right left is 25 N and is directed upward.

The net force on the left one is zero because 200 N force act upward and 200 N force act downward so both cancel each other and net force is zero.

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Answer:

Well, I know basketball is one. Also, Track and Field and tennis

Moving from the element with atomic number 10 to atomic number 11 on the periodic table changes observed are :

Reactivity increases,

Sodium has more shell,

Valence electrons in sodium are farther from the nucleus,

Atomic number 11 does not have a full electron shell

In increasing order of atomic number, the elements are listed. The amount of protons in an atom's nucleus is indicated by its atomic number. An element's identity is determined by its proton count. The number of protons determines an element's identity.

The indirect relativistic effect amplifies the decreases in the binding energies of the valence d and f electrons as they move down the periodic table. As a result, the d electrons in the heavier coinage metals become more chemically active, leading to higher oxidation states in these elements.

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The direction of acceleration of the flea is upward and the magnitude of acceleration is given by: a = \(\frac{F_{breeze}  - mg}{m}\) where \(F_{breeze}\) is the force exerted by the breeze on the flea, m is the mass of the flea, g is the acceleration due to gravity, and a is the resulting acceleration of the flea.

When the flea jumps, it exerts a force straight down on the ground, which according to Newton's third law, results in an equal and opposite force exerted by the ground on the flea, causing it to move upward. However, the breeze blowing parallel to the ground exerts a force on the flea in the opposite direction to its motion, which reduces the upward force exerted by the ground, and hence the acceleration of the flea.

To calculate the magnitude of acceleration of the flea, we need to find the net force acting on the flea. This is given by the difference between the force exerted by the breeze and the gravitational force acting on the flea, which is given by mg. The direction of the net force is upward since the force exerted by the breeze is in the opposite direction to the motion of the flea.

The magnitude of acceleration can then be calculated using Newton's second law, a =\({F_{net}/m\), where\(F_{net}\) is the net force and m is the mass of the flea.

Therefore, the direction of acceleration of the flea is upward and the magnitude of acceleration is given by: a = \(\frac{F_{breeze}  - mg}{m}\) where the force exerted by the breeze, F_breeze, and the mass of the flea, m, are given in the problem statement. The acceleration due to gravity, g, is approximately 9.8 m/s².

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Solubility is determined by the chemical nature of the solute and the solvent, temperature, pressure, and the presence of other substances. Most solids have an increase in solubility as the temperature rises. The solubility of gases decreases as the pressure above the liquid surface increases. The presence of other substances can either decrease or increase the solubility of the solute.

At room temperature, the solubility of several solutes in water can be determined. Solubility refers to the amount of solute that can dissolve in a solvent at a specific temperature and pressure. The solubility of the solute depends on the nature of the solute and the solvent as well as the temperature and pressure. It is essential to know the solubility of the solute in water because water is a universal solvent. Hence it can dissolve a vast number of substances.

Explanation: The solubility of which solute in water is determined by various factors. These factors are the chemical nature of the solute and the solvent, temperature, pressure, and the presence of other substances. The solubility of most solids in water increases as the temperature rises. This is because the solubility of most solids in water is endothermic. As the temperature rises, the solubility of the solute in water increases. This is because the heat energy breaks down the bonds between the solute molecules, allowing them to dissolve more easily in the water.

Solubility is inversely proportional to the pressure. This is particularly true of gases. As the pressure of a gas above the liquid surface increases, the solubility of the gas in the liquid decreases. The solubility of the solute is also influenced by other substances present in the water. If the solute and the other substance have the same charge, the solubility of the solute decreases. If the solute and the other substance have different charges, the solubility of the solute increases.

Conclusion: In conclusion, solubility is determined by the chemical nature of the solute and the solvent, temperature, pressure, and the presence of other substances. Most solids have an increase in solubility as the temperature rises. The solubility of gases decreases as the pressure above the liquid surface increases. The presence of other substances can either decrease or increase the solubility of the solute.

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Answer: the last one

Explanation:

Answer:

C

Explanation:

Answer:

twice more but I have to make it 20 characters so h8 how u doing I hear yelling outside my room and exstasional dread in my head

If the mass of the truck is doubled, the force of friction is doubled, and the skidding distance is doubled.

Hence, the correct option is C.

The skidding distance is proportional to the mass of the truck. If the truck is heavily loaded so it has twice the total mass, the skidding distance will be twice as far.

This is because the force of friction is proportional to the normal force, which is in turn proportional to the mass of the truck. The greater the mass of the truck, the greater the force of friction, and the longer the skidding distance.

In equation form, the skidding distance is given by:

s = μ * d / f

where:

s is the skidding distance

μ is the coefficient of friction

d is the distance traveled before the truck stops

f is the force of friction

The force of friction is given by:

f = μ * mg

where:

m is the mass of the truck

g is the acceleration due to gravity

Therefore, If the mass of the truck is doubled, the force of friction is doubled, and the skidding distance is doubled.

Hence, the correct option is C.

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The wavelength λ of light when it is traveling in air depends on the color or frequency of the light meaning they have the same amplitude and direction of oscillation.


Light is an electromagnetic wave that travels through space at a constant speed of approximately 299,792,458 meters per second. The wavelength of light is the distance between two consecutive points on the wave that are in phase, meaning they have the same amplitude and direction of oscillation.

The wavelength of light can be calculated using the formula: λ = c / f. Where λ is the wavelength, c is the speed of light in air (approximately 3 x 10^8 m/s), and f is the frequency of the light. To find the wavelength of light when it is traveling in air, you need to have information about its frequency. Once you have the frequency, you can use the above formula to calculate the wavelength.

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To ensure proper airspace protection while holding at5,000 feet in a civil aircraft, the maximum indicated airspeed a pilot should use is 200 knots.

Indicated airspeed means that the speed of an aircraft as shown on pitot static airspeed indicator is calibrated to reflect standard atmosphere adiabatic compressible flow at sea level uncorrected for airspeed system errors.

Indicated airspeed is the airspeed which is read directly from the airspeed indicator on an aircraft and driven by the pitot-static system. It uses difference between total pressure and static pressure, to mechanically or electronically measure dynamic pressure.

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Answer:

m = 70 kg

Explanation:

We have,

Weight of Simba on Earth is 687 N

It is required to find his mass.

The net force acting on him is the force of gravity or its weight. It is given by :

\(W=mg\\\\m=\dfrac{W}{g}\\\\m=\dfrac{687}{9.8}\\\\m=70\ kg\),  g = 9.8 m/s²

So, his mass is 70 kg.

The work done by the centripetal force acting on an object moving at a constant linear speed is: "equal to zero because the object has constant speed."

When an object moves at a constant linear speed, the velocity vector remains constant, and there is no change in the speed or direction of the object's motion. In this case, the object experiences uniform circular motion, and the centripetal force acts perpendicular to the direction of motion.

The work done by a force is given by the equation:

Work = Force * Displacement * cos(θ)

In the case of the centripetal force, the angle (θ) between the force vector and the displacement vector is 90 degrees since the force and the displacement are perpendicular. Therefore, the cosine of 90 degrees is zero:

Work = Force * Displacement * cos(90°) = 0

Hence, the work done by the centripetal force on an object moving at a constant linear speed is equal to zero.

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Answer:

Wire length, current value, and potential difference certainly belong to the continuous category.

Perhaps, eye color would be the 4'th value because of the continuity involved