Calculate the de Broglie wavelength of: a) a He atom traveling at 1000 m/s (a typical speed at room temperature) b) Yourself traveling at 8 km/h (jogging speed)

Answer:

The answer is 'an equinox'.

The angle of baking from the calculation is obtained as 30°.

The term banking refers to a means of preventing vehicles from skidding off the road at curves.

We know that the banking angle is obtained from;

θ = tan-1(v^2/rg)

v = 24.5 m/s

r = 110 m

g = 9.8 m/s^2

θ = tan-1(25^2/9.8 * 110)

θ = tan-1(625 /1078)

θ = 30°

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For the system to be critically damped, the damping constant should be equal to the critical damping constant, which is approximately 0.346 kg/s.

To determine if the system is overdamped or underdamped, we need to compare the damping constant with the critical damping constant. The critical damping constant can be calculated using the formula:

Critical damping constant = 2 * sqrt(mass * springiness)

where mass is in kg and springiness is in N/m.

First, convert the mass from grams to kilograms: 25 g = 0.025 kg.

Now, calculate the critical damping constant:

Critical damping constant = 2 * sqrt(0.025 kg * 1.5 N/m) ≈ 0.346 kg/s

The given damping constant is 250 g/s, which is equivalent to 0.25 kg/s. Since the damping constant (0.25 kg/s) is less than the critical damping constant (0.346 kg/s), the system is underdamped.

For the system to be critically damped, the damping constant should be equal to the critical damping constant, which is approximately 0.346 kg/s.

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The frictional force when the box has a constant velocity of 6 m/s is -30 N

We'll begin by obtaining the acceleration of the box. This can be obtained as follow:

Acceleration = velocity / time

Acceleration = 6 / 2

Acceleration = 3 m/s²

Next, we shall determine the net force on the box. This is shown below:

Net force = mass × acceleration

Net force = 14 × 3

Net force = 42 N

Finally, we shall determine the frictional force. Details below

Net force = Force applied - frictional force

42 = 12 - frictional force

Rearrange

Frictional force = 12 - 42

Frictional force = -30 N

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Answer: decrease in current, power loss, and voltage drop

The potential difference across resistors is 12 V. The power dissipated in resistor 5 is 1.33 W.

a) Ohm's law states that the current I through a conductor between two points is directly proportional to the voltage V across the two points. It can be written as;

V = IR

Where V is the voltage measured across the conductor, I is the current through the conductor and R is the resistance of the conductor.R4 = 6 ohms

So, I4 = V/R4 = 24/6 = 4 Amps

b) The circuit shown in the figure can be simplified by the following steps: Resistance in series:

R2 and R3 are in series, so add them up.

R23 = R2 + R3 = 18 + 12 = 30 Ω

Resistance in parallel: R23 and R4 are in parallel, so combine them using the following formula:

1/Rp = 1/R23 + 1/R4 => 1/Rp = 1/30 + 1/6 => 1/Rp = 2/15 => Rp = 7.5 Ω

Resistance in series:

R1 and Rp are in series, so add them up.

Rtotal = R1 + Rp = 2 + 7.5 = 9.5 Ω

Therefore, the equivalent resistance of the circuit is 9.5 Ω

c) The potential difference across resistor is I1 x R1 = 2 × 6 = 12 V.

d) What is the power dissipated in resistor 5? (5 points) R5 = 1/3 ohms

We know,

P = I² × RSo, P5

= I5² × R5 => P5

= (2 A)² × 1/3 Ω

= 4/3 W

≈ 1.33 W

So, the power dissipated in resistor 5 is 1.33 W.

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Answer:A

Explanation: search for a gap in traffic and adjust your speed to the speed of the traffic.

Explanation:

f=175N

m=43kg

a=?

know

f=ma

a=f/m

a=175/43

a=4.06m/s

If a net horizontal force of 175 N is applied to a bike whose mass is 43 kg, acceleration is produced 4.06 m/s².

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.

Given in the question,

f = 175 N

m = 43 kg

a =?

know

f = ma

a = f/m

a = 175/43

a = 4.06 m/s²

If a net horizontal force of 175 N is applied to a bike whose mass is 43 kg, acceleration is produced 4.06 m/s².

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Answer:

hope this helps

Explanation:

solid particles are arranged according to the size of the object

while liquid particles are arranged how they move freely together in the object they are in.

while gas particles are arranged scatterly like they spread.

Explanation:

We know that the overall mechanical energy of a device stabilizes in the absence of any external force. We know that that the total of potential and kinetic of the freely velocity vector remains same. ,So mechanical energy of a body, underneath gravitation, remains constant.

If you live on Moon, the day will be  a lunar month. Hence, option (c) is correct.

A lunar month is the interval between two consecutive syzygies of the same sort, such as a new moon or a full moon, in lunar calendars.

Following its conjunction with the Sun one or two days prior to that evening, the young crescent moon initially becomes visible at dusk, according to Shona, Middle Eastern, and European traditions. The beginning of the lunar month in ancient Egypt coincided with the day when the declining moon was no longer visible just before sunrise.

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The photoelectric effect is the emission of electrons from a metal surface when light of a certain frequency is shined on it. The kinetic energy of the emitted electrons is determined by the frequency of the light and the work function of the metal. Therefore,

1. Particle at 60% of the speed of light: Speed = 1.8 x 10⁸ m/s (c).

2. Spaceship at 0.75c: Speed = 1.95 x 10⁸ m/s (d).

3. Photoelectron's kinetic energy depends on incident photon's energy and metal's work function.

The kinetic energy of a photoelectron emitted from a metal surface by a photon of light is given by the equation:

KE = \(h_f\) - phi

where:

KE is the kinetic energy of the photoelectron in joules

\(h_f\) is the energy of the photon in joules

phi is the work function of the metal in joules

The work function of a metal is the minimum amount of energy required to remove an electron from the metal surface. The energy of a photon is given by the equation:

\(h_f\) = h*ν

where:

h is Planck's constant (6.626 x 10⁻³⁴ J*s)

ν is the frequency of the photon in hertz

The frequency of the photon is related to the wavelength of the photon by the equation:

ν = c/λ

where:

c is the speed of light in a vacuum (2.998 x 10⁸ m/s)

λ is the wavelength of the photon in meters

So, the kinetic energy of the photoelectron emitted from a metal surface by a photon of light is given by the equation:

KE = h*c/λ - phi

For example, if the wavelength of the photon is 500 nm and the work function of the metal is 4.1 eV, then the kinetic energy of the photoelectron will be:

KE = (6.626 x 10⁻³⁴J*s)*(2.998 x 10⁸ m/s)/(500 x 10⁻⁹ m) - 4.1 eV

= 3.14 x 10⁻¹⁹ J - 1.602 x 10⁻¹⁹ J

= 1.54 x 10⁻¹⁹ J

In electronvolts, the kinetic energy of the photoelectron is:

KE = (1.54 x 10⁻¹⁹ J)/(1.602 x 10⁻¹⁹ J/eV)

= 0.96 eV

3. The kinetic energy of a photoelectron emanating from a metal surface can be calculated by subtracting the work function of the metal from the energy of the incident photon. The work function is the minimum energy required to remove an electron from the metal. The remaining energy is then converted into the kinetic energy of the photoelectron.

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Complete question :

1.We have a particle that travels at 60% of the speed of light, its speed will be? a. 0.18 x 108 m/s b. 1.5 x 108 m/s c. 1.8 x 108 m/s d. 18.0 x 108m/s 2. A spaceship travels at 0.75c, its speed will

3. Determine the kinetic energy of a photoelectron emanating from a metal surface.

Answer:

3

Explanation:

It takes a runner 320 s to travel a final position of +1000 m at a velocity of +2.5 m/s. The runner's initial position is 200 meter.

When an item is moving, its velocity is the rate at which its direction is changing as seen from a certain point of view and as measured by a specific unit of time.

Velocity = distance/time

distance = Velocity*time

distance = 2.5*320

distance = 800 meter

Given final position is 1000 m and so initial position is 200 meter.

It takes a runner 320 s to travel a final position of +1000 m at a velocity of +2.5 m/s. The runner's initial position is 200 meter.

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Language development has its most rapid and important advances during early childhood. Option c is correct.

Language development has its most rapid and important advances during early childhood, which is typically defined as the period from ages 2 to 6 years. During this time, children's language abilities undergo significant changes as they acquire vocabulary, grammar, and communication skills. Children start to use complex sentence structures, understand abstract concepts, and engage in social communication with peers and adults.

The development of language during this period is crucial, as it lays the foundation for success in later academic and social contexts. Early childhood language development is influenced by both environmental and genetic factors, and caregivers and educators can play a key role in supporting and promoting language skills during this time. Hence, option c is correct.

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Terrestrial planets are thought to have dense iron cores primarily due to their formation process and the differentiation of their materials.

During the early stages of planet formation, when dust and gas in a protoplanetary disk come together to form planets, heavier elements such as iron tend to sink towards the center due to their higher density. This process, called planetary differentiation, results in the formation of a dense metallic core at the center of the planet. Iron is one of the most abundant heavy elements in the universe, and its high density makes it more likely to sink towards the core during planetary formation. As the planet grows and accumulates more material, the iron-rich core becomes more prominent.

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Positron emission tomography (PET) studies of patients with schizophrenia have found various patterns of brain activity and neurotransmitter abnormalities associated with the condition. Some key findings from PET studies in schizophrenia include:

Dopamine Dysregulation: PET studies have revealed an imbalance in dopamine neurotransmission in the brains of individuals with schizophrenia. Excessive dopamine activity in certain brain regions, such as the mesolimbic pathway, is associated with positive symptoms of schizophrenia, including hallucinations and delusions.Hypofrontality: PET scans have shown reduced metabolic activity in the frontal cortex of individuals with schizophrenia. This "hypofrontality" may be related to cognitive impairments and negative symptoms experienced by patients, such as decreased motivation and social withdrawal.

Abnormal Glutamate Levels: PET studies have suggested alterations in glutamate neurotransmission in individuals with schizophrenia. Glutamate is an excitatory neurotransmitter involved in various cognitive processes. Disruptions in glutamate signaling may contribute to cognitive deficits observed in schizophrenia.Brain Connectivity: PET imaging has also provided insights into altered functional connectivity in the brains of individuals with schizophrenia. Aberrant patterns of connectivity between different brain regions have been associated with symptoms and cognitive impairments in the disorder.

It is important to note that findings from PET studies in schizophrenia can vary across individuals and may not be consistent across all patients. More research is needed to fully understand the complex neurobiological mechanisms underlying schizophrenia

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On the moon, all the objects when dropped reached the ground at the same time.

Imagine that you are standing on the (airless) moon, and you drop four objects, each the size of a bowling ball. Each is made of a different substance. One object is a pumpkin, and the others are made of styrofoam, lead, or bubble wrap. All the objects reach the ground at the same time. This is based on the idea that the Earth's acceleration due to gravity is the same for all objects, irrespective of the mass of their bodies.

The formula is given as Net Force = ( G × M × m) / R². Thus the net force is the object's weight.Then mg = ( G × M × m) / R²,  g = (G × M ) /R².Therefore, the gravity of an object doesn't depend on its mass of the object.

Hence, in this case, it is concluded that by neglecting air resistance, Styrofoam, lead, Bubble Wrap, and pumpkin, all the objects would fall at the same time.

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Sampling is the process of selecting a subset of individuals or items from a larger population in order to gather information or make inferences about the whole population. This method allows researchers to collect data from a smaller group, which is more efficient and cost-effective than collecting data from the entire population.

Sampling is a crucial process in research because it helps ensure that the data collected is representative of the population and reduces the potential for bias. There are several types of sampling methods, including random sampling, stratified sampling, and convenience sampling. The choice of sampling method depends on the research question, the population being studied, and the resources available to the researcher. The accuracy of the data obtained from a sample depends on the sample size and the sampling method used. A larger sample size is generally more representative of the population and reduces the margin of error, while a smaller sample size may be more susceptible to sampling bias.

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Answer:

The distance separating the two particles when the moving particle is momentarily stopped is 0.947 m

Explanation:

Given that,

First charge = 40 μC

Second charge = 80 μC

Distance between the two particles = 2.0 m

Kinetic energy = 16 J

We need to calculate the distance separating the two particles when the moving particle is momentarily stopped

Using conservation of energy

\(K.E+\dfrac{kq_{1}q_{2}}{d}=\dfrac{kq_{1}q_{2}}{x}+K.E\)

Put the value into the formula

\(16+\dfrac{9\times10^{9}\times40\times10^{-6}\times80\times10^{-6}}{2}=\dfrac{9\times10^{9}\times40\times10^{-6}\times80\times10^{-6}}{x}+0\)

\(16+14.4=\dfrac{28.8}{x}\)

\(30.4x=28.8\)

\(x=\dfrac{28.8}{30.4}\)

\(x=0.947\ m\)

Hence, The distance separating the two particles when the moving particle is momentarily stopped is 0.947 m

The distance separating the two particles when the moving particle is momentarily stopped is 0.947 m.

The given parameters;

The kinetic energy is zero at the instant the moving particle is momentarily stopped.

The distance separating the two particles when the moving particle is momentarily stopped is calculated as follows;

\(K.E_1 \ + W_1 = K.E_2 + W_2\\\\K.E_1 + \frac{kq_1q_2}{x_1} = K.E_2 + \frac{kq_1q_2}{x_2} \\\\16 \ + \ \frac{(9\times 10^9)\times (40\times 10^{-6})\times (80\times 10^{-6})}{2} = 0 \ + \ \frac{(9\times 10^9)\times (40\times 10^{-6})\times (80\times 10^{-6})}{x_2} \\\\30.4= \frac{28.8}{x_2} \\\\x_2 = \frac{28.8}{30.4} \\\\x_2 = 0.947 \ m\)

Thus, the distance separating the two particles when the moving particle is momentarily stopped is 0.947 m.

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Answer:

The president is permitted to veto specific legislative acts, but Congress has ... and judicial appointments and on the approval for ratification of treaties. ... State shall have the Qualifications requisite for Electors of the most numerous Branch of the State Legislature. ... No Bill of Attainder or ex post facto Law shall be passed.

Explanation:

Answer:

erosion

Explanation:

because i just got it right on study island

The mass of a mini black hole with a diameter of 1.0×10−15m cannot be determined using just the size of a proton.

The diameter of a proton is incredibly small, but it is still much larger than the theoretical size of a mini black hole. Mini black holes are thought to have sizes on the order of the Planck length, which is approximately 1.6×10−35m. Therefore, the size of a proton is not a useful parameter in determining the mass of a mini black hole.

To determine the mass of a black hole, we typically use its event horizon radius, which is the distance from the center of the black hole at which the escape velocity exceeds the speed of light. The event horizon radius is directly proportional to the mass of the black hole, so by measuring it we can estimate the mass. However, mini black holes are purely hypothetical and have not been observed, so their masses cannot be determined with current technology.

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The statement is false. Energy cannot be created or destroyed in an isolated system, according to the first law of thermodynamics, commonly known as the law of energy conservation. Only from one form to another can it be transmitted or altered.

On the other hand, the second law of thermodynamics introduces the idea of entropy, a measurement of a system's disorder or unpredictability. The second law states that the overall entropy in a closed system tends to increase or remain constant over time.

Entropy is related to energy dispersion and the availability of useable energy. Useable energy is usually lost when energy is transferred from one form to another due to several reasons such heat transmission, friction, and inefficiency.

The second law of thermodynamics states that the overall entropy of the universe has a tendency to either increase or decrease. Despite the fact that energy can be changed or transported, the entropy of the universe as a whole, which includes the system and its surroundings, tends to increase over time.

The correct statement would be: The second rule of thermodynamics shows that the total entropy of the universe tends to increase since energy cannot be generated or destroyed. In accordance with the first law of thermodynamics, energy cannot be generated or destroyed.

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Answer:

b

Explanation:

because the metalloids are the thing in the middle

Answer:

Normal, Gravitational, Applied, Friction, and Tension

Explanation:

Because the sled is on the ground, or rather because it is on the earth, it will have a force of gravity, or its weight, pulling it down.

There is a normal force because the sled is not moving into the ground, so there needs to be a force pushing on the sled from the ground. Additionally, Newton's 3rd law states that for every action there is an equal but opposite reaction, if it's in equilibrium or not moving.

There will be an applied force since the child is pulling the sled and is applying a force to do so.

There will be a friction force that is pulling the sled opposite the direction it is moving, since it is on the ground that is presumably not fricitonless.

There will be a tension force pulling on the sled by the rope. However there is also a tension force pulling on the child's hand by the rope, meaning that these are internal forces and essentially balance out, but they are still there.

There is no air resistance force, or very little of it, since the object is not falling.