How are asteroids formed?

A. They formed when the sun ejected large pieces of rocky material.
B. They formed when the solar system formed in a method similar to planets, but they never grew large enough to become planets.
C. They formed when a moon breaks free from a planet.
D. They formed when two pieces of icy material collided to make a larger piece of ice and dust.

The magnitude of the electric field between the plates can be determined using the formula E = σ/ε₀, where σ is the surface charge density and ε₀ is the permittivity of free space. Plugging in the values, we have E = (45.0 nC/m²) / (8.85 x 10⁻¹² C²/N·m²), which gives E = 5.08 x 10⁶ N/C.

(b) The potential difference between the plates can be found using the formula V = Ed, where E is the electric field and d is the separation distance between the plates. Substituting the values, we have V = (5.08 x 10⁶ N/C) x (0.34 m), which gives V = 1.73 x 10⁶ V.

(c) The kinetic energy of the proton can be calculated using the equation KE = qV, where q is the charge of the proton and V is the potential difference. The charge of a proton is 1.6 x 10⁻¹⁹ C, so KE = (1.6 x 10⁻¹⁹ C) x (1.73 x 10⁶ V), resulting in KE = 2.77 x 10⁻¹³ J.

(d) To find the speed of the proton just before it strikes the negative plate, we can use the conservation of energy. The kinetic energy at the negative plate is equal to the initial kinetic energy. Since the mass of a proton is approximately 1.67 x 10⁻²⁷ kg, we can calculate the speed using the equation KE = (1/2)mv². Solving for v, we have v = sqrt(2KE/m) = sqrt((2 x 2.77 x 10⁻¹³ J) / (1.67 x 10⁻²⁷ kg)), which gives v ≈ 4.97 x 10⁵ m/s.

(e) The acceleration of the proton can be determined using the equation a = qE/m, where q is the charge of the proton, E is the electric field, and m is the mass of the proton. Substituting the values, we have a = (1.6 x 10⁻¹⁹ C) x (5.08 x 10⁶ N/C) / (1.67 x 10⁻²⁷ kg), resulting in a ≈ 4.82 x 10²⁰ m/s².

(f) The force on the proton can be calculated using the equation F = qE, where q is the charge of the proton and E is the electric field. Plugging in the values, we have F = (1.6 x 10⁻¹⁹ C) x (5.08 x 10⁶ N/C), which gives F ≈ 8.13 x 10⁻¹³ N.

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\(\qquad \qquad\huge \underline{\boxed{\sf Answer}}\)

The more mass a particle has and the higher the particle's speed , the more kinetic Energy the particle has.

The reason for that is ~

Mass and Velocity are in proportional relationship with kinetic Energy.

Answer:

Explanation:

The wording on some of these choices is very strange; I'm not sure exactly what they are stating. First of all, A. is definitely a choice because if both the charges were opposite, they would be attracted to one another as opposed to be repelled away from one another, as they are when they are both positive. What happens is that the charges go OUT from the positive charge and INTO the negative; so as far as the field lines around both charges would change direction...no; only the direction of the field lines would change on the positive charge (which is the one on the left). In that space where D is filled in by the field lines going OUT of the positive charge and INTO the negative one, the lines there are naturally closer together, and that is the point where the charge is the greatest. So if that is what is meant by the field lines getting closer together, then yes, they do. As far as choice D. again the field lines on the negative charge don't change, only the ones on the positive charge change.

The arrows on the field lines surrounding the negative charge would need to point toward instead of away from the charge.

These pattern of lines, sometimes referred to as electric field lines, point in the direction that a positive test charge would accelerate if placed upon the line. As such, the lines are directed away from positively charged source charges and toward negatively charged source charges.

“ When an object has more electrons than protons then the object is said to be negatively charged.”

“When an object has more protons than electrons, the object is said to be positively charged.”

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I think unsaturated

because -

At 55°C, a saturated solution would contain 120 g of solute, NaNO3. (Notice, this point is exactly on the solute's curve). If, for example we mixed in 140 g of NaNO3 instead of 110 g of solute at 55°C, we would create a SUPER saturated solution, because we would be at a point ABOVE the solute's solubility curve.

answer:

the first one  

Explanation:

i think it is this one because 4k is bigger than 2k . also it is asking which one has the lager magnitude so it is the first one

Answer:

the filling stops when the pressure of the pump equals the pressure of the interior air plus the pressure of the walls.

Explanation:

This exercise asks to describe the inflation situation of a spherical fultball.

Initially the balloon is deflated, therefore the internal pressure is equal to the pressure of the air outside, atmospheric pressure, when it begins to inflate the balloon with a pump this creates a pressure in the inlet valve and as it is greater than the pressure inside, the air enters it, this is repeated in each filling cycle, manual pump.

When the ball is full we have two forces, the one created by the external walls and the one aired by the pressure of the pump, these forces are directed towards the inside, but the air molecules exert a pressure towards the outside, which translates into a force. When these two forces are equal, the pump is no longer able to continue introducing air into the balloon.

Consequently the filling stops when the pressure of the pump equals the pressure of the interior air plus the pressure of the walls.

Answer: Final velocity of car is 18.64 m/s

Explanation:

According to equation of motion,

V=U + at

where,

V is final velocity

U is initial velocity

a is acceleration

T is time

in the question,

U=16 m/s

a=0.22 m/s*s

t=12 seconds

on substituting values,

V = 16+(12*(0.22))

V=18.64

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Explanation:

a.)

Reactants : CO2 (carbondioxide) + H2O (water)

Products : O2 (oxygen) + C6H12O6 (glucose)

b.)

Reactants: Na ( Solid Hydrogen) + H2O (water)

Products: H2 (hydrogen gas) + NaOH (sodium hydroxide)

Answer:

yes, because the seat belts lock in place when a car crashes, locking your body with it so you don't go out flying out of the car and injury your self.

Answer:

h = 30.61 m

Explanation:

In this problem they indicate the pressure at the bottom of the lake and the density of the water, for which they must ask what is the depth of the lake.

The pressure is given by the expression

           P = \(P_{atm}\) + rho g h

           P - P_{atm} = rho g h

The gauge pressure value is P- P_{atm} = 3 105 N / m²

          h = \(\frac{P - P_{atm}}{ \rho \ g}\)

let's calculate

          h = \(\frac{3 \ 10^5}{1000 \ 9.8}\)

          h = 30.61 m

Explanation:

Given that,

Initial position, h₀ = 50 m

A rock is tossed straight up into the air with a velocity of 20.0m/s

(a) When the rock reaches its maximum height, its final velocity, v = 0. Using equation of kinematics as follows :

v=u+at

here, a = -g

\(t=\dfrac{u}{g}\\\\t=\dfrac{20\ m/s}{10\ m/s^2}\\\\t=2\ s\)

(b) Let h is the maximum height reached by the toss. It can be given by :

\(h=h_0+ut-\dfrac{1}{2}gt^2\\\\h=50+20\times 2-\dfrac{1}{2}\times 10\times 2^2\\\\h=70\ m\)

(c) Let T is the time it takes the rock to reach the ground. It is equal to the sum of time reaches to its maximum height and the remaining time. It can be calculated as follows :

\(T=t+\sqrt{\dfrac{2h}{g}}\)

Putting all the values,

\(T=2+\sqrt{\dfrac{2\times 70}{10}}\\\\T=5.74\ s\)

(d) Let v is the velocity of the rock as it hits the ground. It can be calculated as follows :

v = u - gt

\(v = 20 - (10)(5.74)\\\\v=-37.4\ m/s\)

Negative sign shows it comes in downward direction.

Answer:

Parallel processing

Explanation:

It is a parallel processing because it involves the brain processing many part of problem simultaneously.

The brain natural mode of information involves performing many task .

It is also ability of the brain to simultaneously process incoming stimuli or signals of different quality. It is a part of brain's vision and divide what is seen into four major parts which are color, motion, shape, and depth.

Answer: B)  Parallel processing

The value of resistor R that gives the circuit in the figure a time constant of 22 μs is 220 Ω.

The circuit that is in the figure is shown below:Given that time constant (RC) = 22 μs. To find the value of resistor R, we need to use the formula for the time constant:

RC = τ, where R is the resistance and C is the capacitance of the circuit.

Rearranging the above formula, we get:R = τ / C

Where τ is the time constant and C is the capacitance of the circuit.

From the figure, the capacitance is given as 0.1 μF

.Substituting the values of τ and C in the above formula, we get:

R = (22 × 10⁻⁶ s) / (0.1 × 10⁻⁶ F)

R = 220 Ω

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As n is not an integer, so there will be no constructive interference between the speakers, if speaker A is moved by minimum distance.

Interference is a phenomenon in which two waves combine by adding  displacement together at every single point in space and time and to form a resultant wave of greater, lower, or same amplitude.

Wavelength of a 500 Hz sound wave is the speed of sound (about 343 m/s) divided by the frequency of the sound, which is 343/500 m = 0.686 m. Therefore, minimum distance you can move speaker A to achieve constructive interference along x-axis is 0.686/2 m = 0.343 m.

Given, distance between the speakers is 6m. Constructive interference will occur when path difference between two waves is equal to integer multiple of the wavelength. To achieve constructive interference, distance between the speakers + the distance moved by speaker A should be equal to n*wavelength where n is integer.

So, 6 + 0.343 = n* 0.686

n = (6+0.343)/0.686 = 8.8

As n is not an integer, so there will be no constructive interference between the speakers, if speaker A is moved by minimum distance.

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Answer:

1,3and4 just did and got correct

Explanation:

The direction of the polarized light after passing the first and the second filter are the same, however the intensity of the light after passing the first and second polarizer are half and fourth of its original intensity, respectively.

Light polarization is a filter of electromagnetic waves such that it propagates into one transmission axis only.

When light passes through a polarizer, its intensity will decrease by half.

Suppose the intensity of unpolarized light is  I₀,  after passing the first polarizer, its intensity becomes:

I₁ = 1/2 . I₀

After passing the second polarizer, the intensity will further decrease by half, or:

I₂ = 1/2 . I₁

I₂ = 1/2 .1/2 . I₀ = 1/4. I₀

Since both polarizers are vertical filters, then the direction of the polarized light after passing the first and the second filter are the same.

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The sinusoidal model for the voltage v as a function of time t (in seconds) for a circuit with an alternating voltage of 100 volts that peaks every 0.5 second can be written as,

v(t) = 100 sin(2πt/0.5)
where sin is the sine function and 2π is a constant factor that represents the angular frequency of the alternating voltage. The period of the alternating voltage is 0.5 seconds, so the factor 2π/0.5 in the argument of the sine function ensures that the voltage peaks every 0.5 seconds. The amplitude of the voltage is 100 volts.
To write a sinusoidal model for the voltage V in a circuit with an alternating voltage of 100 volts that peaks every 0.5 seconds, we need to find the amplitude, period, and angular frequency.

1. The amplitude is the maximum voltage, which is 100 volts.
2. The period is the time taken for one complete cycle, which is 0.5 seconds in this case.
3. To find the angular frequency, use the formula ω = 2π / T, where T is the period. So, ω = 2π / 0.5 = 4π.
Now we can write the sinusoidal model for the voltage V as a function of the time t (in seconds) using these values:
V(t) = 100 * sin(4πt)
This sinusoidal model represents the voltage in the circuit as it alternates with time.

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Thermal mass walls help retain captured energy and slowly transfer it to the inside by making use of the property of "thermal mass." This property refers to the ability of a material to absorb and store heat energy. Materials with high thermal mass, such as concrete, brick, and stone, can effectively store heat during the day and gradually release it at night.

In the context of building design, thermal mass walls can enhance energy efficiency and maintain comfortable indoor temperatures. When sunlight or other heat sources warm the outer surface of these walls, the heat is absorbed by the high thermal mass materials. Throughout the day, the walls capture and store the heat energy, preventing it from entering the building's interior.

As temperatures drop in the evening, the heat stored within the walls is gradually released into the building, providing a stable and consistent source of warmth. This process helps to maintain comfortable indoor temperatures with less reliance on artificial heating systems, reducing energy consumption and associated costs.

In summary, thermal mass walls contribute to energy efficiency and indoor comfort by effectively capturing, storing, and slowly releasing heat energy. Their high thermal mass properties help to moderate temperature fluctuations, providing a consistent source of warmth in colder periods and reducing the need for additional heating systems.

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The gravitational force of Earth on the satellite, given that the satellite is launched into orbit 30000 km above sea level is 1.63×10³ N

The gravitaional force between two objects can be obtained by using the following formula:

F = GM₁M₂ / r²

Where

The following data were obtained from he question:

The gravitaional force can be obtained as shown below:

F = GM₁M₂ / r²

F = (6.673×10¯¹¹ × 5.4×10³ × 6.0×10²⁴) / (36400000)²

F = 1.63×10³ N

Thus, the gravitational force is 1.63×10³ N

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The cause of the ice ages is a complex and multifactorial phenomenon that cannot be attributed to a single cause. However, scientists believe that several factors played a role in triggering the ice ages, including changes in the Earth's orbit, the tilt of the Earth's axis, and variations in the amount of solar radiation that the Earth receives.

These factors can affect the distribution of sunlight and heat across the planet, which in turn can impact the growth of glaciers and the amount of ice on Earth.

Other factors that may have contributed to the ice ages include volcanic activity, the size of tree rings, the amount of pollen grains, and even cosmic events like solar flares and gassy ejections from the sun.

Overall, the cause of the ice ages is a long answer that involves multiple factors working together in complex and dynamic ways.

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Answer:

2.5 m/s^2

Explanation:

the equation to find acceleration is \(\frac{v - v_{0} }{t}\) where \(v_{0}\) is the initial velocity, v is the current velocity, and t is the total time

so plug in your values: \(\frac{20 - 0}{8}\)

that turns into 20 ÷ 8

this equals 2.5 m/s^2

Situations in which mass of an object is the main factor of momentum are :

The factors that have a direct effect on an object's momentum are ;

The momentum of an object is determined by the multiplication of the mass of object by its velocity/speed. therefore some examples of situation in which mass is a main factor determining momentum are as listed above.

p ( momentum ) = M* V

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Answer:

Approximately \(24.3\; {\rm m}\).

Explanation:

Under the assumptions, the net force on the block is equal to the horizontal force from the worker.

During the first \(4.50\; {\rm s}\) where the worker was applying a constant force on the block, the net force on the block will be constant. Acceleration of the block will be also constant, and SUVAT equations will apply.

Apply the SUVAT equation:

\(\displaystyle x &= \left(\frac{u + v}{2}\right)\, t\),

Where:

(In other words, displacement during constant acceleration is equal to average velocity times the duration of the acceleration.)

Rearrange this equation to find \(v\):

\(\begin{aligned}u + v = \frac{2\, x}{t}\end{aligned}\).

\(\begin{aligned}v &= \frac{2\, x}{t} - u \\ &= \frac{2\, (13.0)}{4.50} - 0 \\ &= \frac{52}{9}\; {\rm m \cdot s^{-1}}\end{aligned}\).

During the next \(4.20\; {\rm s}\), the net force on the block will be zero. The velocity of the block during that much time will stay unchanged at the final velocity after the initial \(4.50\; {\rm s}\), which is \(v = (52/9)\; {\rm m\cdot s^{-1}}\).

Since velocity during this \(4.20\; {\rm s}\) is constant, simply multiply that velocity by the duration to find the distance travelled:

\(\displaystyle \left(\frac{52}{9}\right)\, (4.20) \approx 24.3\; {\rm m}\).

In other words, the block would have travelled an additional \(24.3\; {\rm m}\) during the \(4.20\; {\rm s}\).

It would take approximately 3.66 seconds for the 200-W electric immersion heater to heat the 0.250 kg of water.

To determine the time required for the electric immersion heater to heat the water, we can use the formula: Energy (Joules) = Power (Watts) × Time (seconds). Given: Power = 200 W, Mass of water = 0.250 kg.

First, we need to calculate the energy required to heat the water. The specific heat capacity of water is approximately 4.18 J/g·°C.

Energy = Mass × Specific heat capacity × Temperature change

Assuming the temperature change is from room temperature (around 25°C) to the desired coffee temperature (let's say 95°C):

Energy = 0.250 kg × 4.18 J/g·°C × (95°C - 25°C)

Energy = 0.250 kg × 4.18 J/g·°C × 70°C

Energy = 732.50 J

Now, we can rearrange the formula to find the time: Time (seconds) = Energy (Joules) / Power (Watts)

Time = 732.50 J / 200 W

Time ≈ 3.66 seconds

Therefore, it would take approximately 3.66 seconds for the 200-W electric immersion heater to heat the 0.250 kg of water.

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Answer:

D (maybe)

Explanation:

I have this question too but I think it might be D just let me check

Edit: no it wasn't D sorry

Answer:

0 m

Explanation:

Displacement is the shortest distance from one ppont to another. Here, the girl returns to the same spot after running. Hence, displacement is 0 m.

The deflecting electric field in the ink-jet printer is approximately 5.90 x 10^5 V/m. In an ink-jet printer, the charged ink drops are steered vertically using an electric field.

The electric field causes the drops to experience a force, leading to their vertical acceleration. In this scenario, each ink drop has a mass of 10^-11 kg and a charge of 590095 extra electrons.

To calculate the deflecting electric field, we can use the equation F = ma, where F represents the force experienced by the ink drop, m represents its mass, and a represents its vertical acceleration. The force experienced by the drop is given by the equation F = qE, where q represents the charge of the ink drop and E represents the electric field.

Combining these equations, we have qE = ma. Rearranging the equation to solve for E, we get E = ma/q.

Substituting the given values, we have E = (10^-11 kg) x (104 m/s^2) / 590095 electrons.

Simplifying the calculation, we find E ≈ 5.90 x 10^5 V/m.

Therefore, the deflecting electric field in the ink-jet printer is approximately 5.90 x 10^5 V/m, which is the value needed to steer the charged ink drops vertically.

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In conclusion, using the equation for vertical displacement, we find that the player will attain a height of approximately 5.3045 meters when achieving a hang time of 1.03 seconds while dunking the ball.

To find the vertical height the basketball player will attain, we can use the equation for vertical displacement:
Δy = v₀t + 0.5gt²
where:
Δy is the vertical displacement (height),
v₀ is the initial vertical velocity (0 m/s since the player starts from rest),
t is the time of flight (1.03 s), and
g is the acceleration due to gravity (9.8 m/s²).
Plugging in the values, we get:
Δy = 0(1.03) + 0.5(9.8)(1.03)²
Simplifying the equation, we find:
Δy = 0 + 0.5(9.8)(1.0609)
Δy = 0 + 5(1.0609)
Δy = 5.3045
Therefore, the basketball player will attain a vertical height of approximately 5.3045 meters.
In conclusion, using the equation for vertical displacement, we find that the player will attain a height of approximately 5.3045 meters when achieving a hang time of 1.03 seconds while dunking the ball.

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