please answer please please


Physics ​

Explanation:

it is driver gear.

you can see the word "driver"

Answer:

Memories broken the truth goes unspoken I've even forgotten my name I don't know the season or what is the reason I'm standing here holding my blade

Explanation:

The root-mean-squared speed of a sample of a pure substance in the gas phase is effected by a)temperature of the sample. So, correct option is A.

Genuinely, the root mean square (RMS) is the square foundation of the mean square, which is the number-crunching mean of the squares of a gathering of values. RMS is likewise called a quadratic mean and is an exceptional instance of the summed up mean whose example is 2. Root mean square is likewise characterized as a changing capability in view of a vital of the squares of the qualities which are quick in a cycle.

As such, the RMS of a gathering of numbers is the square of the number-crunching mean or the capability's square which characterizes the persistent waveform.

RMS is given by the below formula,

\(v_r_m_s\) =√3KT/m

where K is Boltzmann constant,

T is the temperature,

and m is called as  mass of the gas particle.

Hence, correct option is A.

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(Complete question) is:

Which of the following parameters affect the root-mean-squared (rms) speed of a sample of a pure substance in the gas phase?

a)temperature of sample

b)boltzmann constant

c)both a and b

d)None of the above.

The loss of gravity has a significant impact on the human body. When in a state of weightlessness, the body's muscles and bones are not required to work as hard as they do on Earth.

As a result, astronauts in space experience muscle and bone loss, as well as a decrease in overall physical fitness. This is due to the fact that gravity is no longer providing the resistance needed for muscles and bones to maintain their strength.

This effect can be beneficial for astronauts on a mission to Mars. The journey to Mars takes several months, and astronauts will be in a state of weightlessness for a large portion of that time.

The muscle and bone loss that occurs in space can be used to the astronaut's advantage. When they land on Mars, the planet's gravity will be only about 38% of Earth's. As a result, the astronauts will be better able to adapt to the planet's lower gravity and carry out their mission.

Hence, It's important to note that these effects are not permanent, and scientists are currently researching ways to mitigate the negative effects of weightlessness and to develop exercise regimens and other countermeasures to help astronauts maintain their physical fitness during long-duration spaceflight.

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The net force on particle q₂ is 1.05 x 10¹³ N, directed towards particle q1.

To find the net force on particle q₂, we need to calculate the force between q₁ and q₂, and the force between q₂ and q₃, and then add these two forces together.

The force between two point charges can be calculated using Coulomb's law, which states that

F = k × q₁× q₂ / r²

where F is the force, k is Coulomb's constant (9.0 x 10⁹ N m² / C²), q₁ and q₂ are the magnitudes of the charges, and r is the distance between the charges.

The force between q₁ and q₂ is

F₁ = k × q₁ × q₂ / r₁²

where r₁ = 0.10 m.

Substituting the values, we get

F₁ = 9.0 x 10⁹ N m² / C²  × 8.0 C  × 3.5 C / (0.10 m)² = 2.52 x 10¹³ N

The force between q₂ and q₃ is

F₂ = k  × q₂  × q₃ / r₂²

where r₂ = 0.15 m.

Substituting the values, we get

F₂ = 9.0 x 10⁹ N m² / C²  × 3.5 C  × (-3.5 C) / (0.15 m)² = -1.47 x 10¹³ N

Note that the negative sign indicates that the force is attractive, since q₂ and q₃ have opposite signs.

The net force on q₂ is the vector sum of F₁ and F₂

\(F_{net}\) = F₁ + F₂ = 2.52 x 10¹³ N - 1.47 x 10¹³ N = 1.05 x 10³ N

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Answer:

b

Explanation:

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The time to lose 99% of its charge is given by τln(1/(1-0.99)), which is 0.06ln(1/0.01) = 0.276 seconds.

a. The time constant τ (tau) of an RC circuit is given by RC.

Here, R = 60 Ω and C = \(1 * 10^-^3 F.\)

Thus, τ = RC = \(60 * 1 * 10^-^3\)= 0.06 seconds.

b. The maximum charge \(Q_max\) on the capacitor is given by Q = CV, where V is the source voltage.

Here, V = 9 V, thus \(Q_m_a_x\)= CV = 1 × 10^-3 * 9 = 0.009 Coulombs.

c. The charge Q(t) on the capacitor at time t is given by Q = \(Q_m_a_x*(1 - e^(^t^/^t^)).\)

At t = 0.1 s, Q = \(0.009*(1 - e^(-0.1/0.06))\) = 0.0014 Coulombs.

d. The time when the capacitor has half its maximum charge is given by τln(2), which is 0.06ln(2) = 0.042 seconds.

e. The time when the capacitor has 90% its maximum charge is given by τln(1/(1-0.9)), which is 0.06ln(1/0.1) = 0.138 seconds.

f. The charge Q(t) on the capacitor during discharge is given by Q = Q_maxe^(-t/τ).

At t = 2 ms = 0.002 s, Q = 0.009e^(-0.002/0.06) = 0.0089 Coulombs.

g. The time to lose 99% of its charge is given by τln(1/(1-0.99)), which is 0.06ln(1/0.01) = 0.276 seconds.

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Answer:

192.6N

Explanation:

Let's consider the forces acting on the beam:

Weight of the beam (W): It acts vertically downward and has a magnitude of W = mass * gravitational acceleration = 39.4 kg * 9.8 m/s^2.

Force exerted by the link on the beam (F_link): It acts at an angle of 90 degrees with respect to the beam and has two components: the vertical component and the horizontal component.

Tension in the cable (T): It supports the far end of the beam and acts at an angle of 90 degrees with respect to the beam. Since the angle between the beam and the cable is 90 degrees, the tension in the cable only has a vertical component.

Let's break down the forces acting on the beam:

Vertical forces:

W (weight of the beam) - T (vertical component of tension) = 0

T = W

Horizontal forces:

F_link (horizontal component of the force exerted by the link) = ?

To find the magnitude of the horizontal component of the force exerted by the link on the beam (F_link), we need to consider the equilibrium of forces in the horizontal direction.

Since the beam is inclined at an angle of θ = 33.1 degrees with respect to the horizontal, the horizontal equilibrium equation can be written as:

F_link = W * sin(θ)

Let's substitute the given values:

W = 39.4 kg * 9.8 m/s^2

θ = 33.1 degrees

F_link ≈ (39.4 kg * 9.8 m/s^2) * sin(33.1 degrees)

Using a calculator, we find that the magnitude of the horizontal component of the force exerted by the link on the beam (F_link) is approximately 192.6 N.

Graphs can help to demonstrate the qualitative relationship between a set of data by identifying patterns among these data.

Graphs can allow readers to identify a lot of information among a set of data. The most common information to be evaluated through the graphs is the existence of patterns between the data.

For example, a line graph can show the change in a variable over time, allowing readers to see if there is a consistent increase or decrease.

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Answer:

The half-life is \( t_{1/2} = 1.005 h\)

Explanation:

Using the decay equation we have:

\(A=A_{0}e^{-\lambda t}\)

Where:

We know the activity decrease by a factor of two in a one hour period (t = 1 h), it means that \(A = \frac{A_{0}}{2}\)

\(\frac{A_{0}}{2}=A_{0}e^{-\lambda*1 h}\)

\(0.5=e^{-\lambda*1 h}\)

Taking the natural logarithm on each side we have:

\(ln(0.5)=-\lambda\)

\(\lambda=0.69 h^{-1}\)

Now, the relationship between the decay constant λ and the half-life t(1/2) is:

\(\lambda = \frac{ln(2)}{t_{1/2}}\)

\( t_{1/2} = \frac{ln(2)}{\lambda}\)

\( t_{1/2} = \frac{ln(2)}{0.69}\)

\( t_{1/2} = 1.005 h\)

I hope it helps you!

Answer:

С . Molecules are made up of two or more  atoms.

Explanation:

The relationship between molecules and atoms is that molecules are made up of two or more atoms.

Molecules are made up of atoms.

A molecule is the smallest particle of a substance element or compound capable of independent existence.

A molecule could be monoatomic, diatomic or polyatomic.

Monoatomic molecules are made up of one atom

Diatomic are made up of two different atoms

Polyatomic substances are made up of more than two kinds of atoms.

The change in momentum of Kara's car is -1.43 × 10⁴ kg.m/s, the magnitude of force is -1.021 × 10⁵ N.

Force is the external agent which causes the motion of an object or it is the resistant which makes the object come at rest from motion. It is a vector quantity, because it has both the magnitude and direction.

Mass of Kara's car = 1300 Kg

moving with speed = 11 m/s

time taken to stop = 0.14 s

final velocity = 0 m/s

distance between Lisa ford and Kara's car = 30 m

a) change in momentum of Kara's car

Δ P = m Δ v          

Δ P = m(vf - vi)

Δ P = 1300 (0 - 11)

Δ P = -1.43 × 10⁴ kg.m/s

The impulse is equal to the change in momentum of the car

I = -1.43 × 10⁴ kg.m/s

Magnitude of the force experienced by Kara

I = F × t

where, I is impulse acting on the car

t is time

- 1.43 × 10⁴ = F × 0.14

F = -1.021 × 10⁵ N

Negative sign represents the direction of the force.

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Your question is incomplete, most probably the complete question is:

Kara Less was applying her makeup when she drove into South's busy parking lot last Friday morning. Unaware that Lisa Ford was stopped in her lane 30 feet ahead, Kara rear-ended Lisa's rented Taurus. Kara's 1300-kg car was moving at 11 m/s and stopped in 0.14 seconds.

a. Determine the momentum change of Kara's car.

b. Determine the impulse experienced by Kara's car.

c. Determine the magnitude of the force experienced by Kara's car.

Answer:

wouldnt a phone be one it takes pictures through reflection like a mirror

A camera is a type of device that forms images through reflection. Camera work on the principle of reflection.

A camera is an optical device that records pictures. Cameras are made up of boxes with a tiny opening that enables light to pass through so that an image may be captured on a light-sensitive surface.

Various techniques exist in cameras to govern how light falls onto the light-sensitive surface. The concept of reflection is used in the camera.

Hence a camera is a type of device that forms images through reflection.

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Answer:

A graduated cylinder

Explanation:

The speed of the waves can be expressed to two significant figures as 0.2 m/s. The unit for this expression is meters per second (m/s).

A wave crest is the highest point of a wave. It is the top of the wave, where the wave is moving most up and away from the equilibrium position. It is the point of highest amplitude (height) of the wave and is followed by a wave trough, which is the lowest point of the wave.

The speed of the waves can be calculated using the formula speed = distance over time.

We know the distance between wave crests is 9.0 m and the time it takes for 12 waves to pass the boat is 45 s. Therefore, the speed of the waves can be calculated as:

Speed = 9.0 m / 45 s

Speed = 0.2 m/s

The speed of the waves can be expressed to two significant figures as 0.2 m/s. The unit for this expression is meters per second (m/s).

This calculation shows that the speed of the waves passing the boat is 0.2 m/s. This speed can be further broken down into how many meters the waves travel in one second if necessary.

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The speed of the ambulance is 33.35 m/s and the frequency heard after the ambulance passes is 667.07 Hz.

Calculation:-

V = f(344 - 15.6/344 - vs)

740 = 700(344 - 15.6/344 - vs)

344 - V s = 70/74 (344 - 15.6)

344 - V s = 310.64

  V s = 33.35 m/s

After pass

F = 700 ( 344 + 15.6/344 + 33.35)

   = 700 × 359.6/377.35

 F = 667.07 Hz

Frequency is the wide variety of occurrences of a repeating event in line with a unit of time. The time period frequency refers to the variety of waves that pass a set factor in unit time. It additionally describes the number of cycles or vibrations undergone for the duration of one unit of time with the aid of a body in periodic motion.

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Autism spectrum disorder is marked by the symptoms of severe depressive symptom. Option B is correct.

A person with clinically severe depression, on the other hand, has chronic melancholy, a low mood, or lost interest in things they used to like, as well as various other depression symptoms that interfere with their ability to function in their everyday life.

ASD (autism spectrum disorder) is a developmental impairment caused by brain differences. ASD patients may have a recognized difference, such as a genetic disease. Other causes are unknown.

Autism is a neurological developmental condition that affects one to two percent of the American and global populations. Because of the variability of the disease, each person's experience with autism and needs for supports and services can vary greatly.

Therefore, option B is correct.

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Answer:

here's the answer

Explanation:

given:

h= 20.0m

M= 12.0kg

g=10m/s²

solution:

potential energy = mgh = (12.0kg)(10m/s²)(20.0m)

= 2400

potential energy = 2400J

hope this help if it does help I'd be happy if you follow and give me the brainliest answer

Answer:

B

speed.

Explanation:

hope it helps you

The magnetic field of a hollow cylinder can be calculated by the Biot-Savart law which can be represented as:`\(d\vec{B} = \frac{\mu_0}{4\pi} \frac{Id\vec{l} \times \vec{r}}{r^2}\)

Where:• I is the current through the wire• dℓ is an infinitesimal segment of the wire• r is the distance from the wire to the point of interest• μ₀ is the permeability of free space Biot-Savart's law can be used to determine the magnetic field produced by any current distribution.

Furthermore, this law is a consequence of the equation describing how a magnetic field induces an electric field and vice versa.

In this case, the cylinder's magnetic field at a distance of d = 10 cm from the axis of the cylinder can be calculated as follows:Given; Inner radius a = 5.0 cm

Radius of cylinder b = 10 cmµ

0 = 4π × 10−7 T.m/A

Formula to be used;`

B= (µ0 * I * a^2)/2 * (d^2 + a^2)^(3/2)`

Here, a = 5 cm

and d = 10 cm.

Substituting the values;

`B = (4 * π * 10^−7 * I * (5*10^−2)^2)/(2 * (10*10^−2^2 + (5*10^−2)^2)^(3/2))`

On solving the above equation, we get;`B = 1.33 × 10^-9 * I T`

Therefore, the magnitude of the magnetic field at a distance of d = 10 cm from the axis of the cylinder is `1.33 × 10^-9 * I T`.

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Answer:

8 newtons

Explanation:

Balanced forces have an equal amount of newtons. 5+3=8, so the other team will need 8 newtons.

In a tug of war contest, one person pulls with a force of 5 Newtons. Another person on the same team pulls with a force of 3 Newtons. In order for the force of the rope to be balanced,force would the other team need to be pulling with is 8 newtons.

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.

A resultant force vector is described as a single vector that has the same consequence as several other vectors taken together.To create the resulting force vector, two vectors facing the opposite direction are subtracted from one another. Here Net Force = 5 - (-3) = 8 N

In order for the force of the rope to be balanced, force would the other team need to be pulling with is 8 Newtons.

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Answer:

The original analog sound waves are perfect but the copy is not because most analog waves have wavelengths that are too long to reproduce in copies

The original digital waves and the copy are perfect because with digital waves no information gets lost in the transfer of data, and there is no additional noise added to the copy.

Analog refers to audio recorded using methods that replicate the original sound waves. Digital audio is recorded by taking samples of the original sound wave at a specified rate.

Explanation:

i dont need $5

i wrote this using information from go ogle and some from brai nly. I hope it helps.

The amount of work done by the gas is proportional to the pressure and the change in volume, as well as the efficiency of the process. If the pressure and volume are known, the work done by the gas can be calculated by multiplying these values by the efficiency of the process.

The amount of work done by a gas when it expands is proportional to the change in volume, pressure, and temperature. According to the first law of thermodynamics, the energy of a closed system is conserved, so the work done by the expanding gas is equal to the energy transferred from the gas to the environment in the form of work. Therefore, the work done by the gas is equal to the change in energy of the system. Assume that the process is 10% efficient. Then, only 10% of the energy available to the system is converted into work. This means that the remaining 90% of the energy is lost to the environment in the form of heat. As a result, the amount of work done by the gas expanding into the atmosphere is given by the formula

W = E x η, where W is the work done by the gas, E is the energy available to the system, and η is the efficiency of the process. The energy available to the system is determined by the difference between the internal energy of the gas before and after the expansion. The internal energy of a gas is determined by its temperature, pressure, and volume.

Assuming that the temperature and pressure are constant, the change in internal energy is proportional to the change in volume. Therefore, the energy available to the system is equal to the product of the pressure and the change in volume: E = P x ΔV, where P is the pressure of the gas and ΔV is the change in volume during the expansion. Substituting this equation into the formula for work, we get W = P x ΔV x η.

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The speed of the object v is 16 m/s.

The mass of the object moving on the horizontal surface is m.

The speed of the object is v m/s.

The coefficient of friction, μ = 0.40

The acceleration due to gravity, g = 10 m/s²

So, the initial velocity is v m/s and the final velocity is 0 m/s.

The total distance traveled by the object is 32 meters.

The formula for force is:

F = ma

Now,

ma = - μmg

a = - μg

a = - 0.40 × 10 = - 4 m/s²

The distance, s = 32 meters

Using the equation of motion,

v² = u² + 2as

0 = v² + 2( - 4 )( 32 )

0 = u² - 256

u² = 256

u = √256 = 16 m/s

Hence, the value of the speed v is 16 m/s.

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Answer:

Angle of incidence = 20°

Angle of reflection = 20°

Explanation:

Applying,

The first Law of Refraction: The incident ray, the reflected ray and the normal at the point of incidence all lies in the plane.

From the diagram,

Angle of incidence = 90-70

Angle of incidence = 20°

From the law of reflection,

Angle of incidence = Angle of reflection

Therefore,

Angle of reflection = 20°

Answer:

can you tell me about this property

Answer:

"is constant"

On the apple, we apply "antigravitational force."

The apple exerts "gravitational force" on us.

The gravitational attraction, an attractive force whose magnitude is directly proportional to the masses of the two objects and inversely proportional to the square of their distance from one another, draws all mass-containing things together.

You can never decrease the gravitational pull produced by adding mass. It is possible for gravitational forces acting in opposition to one another to cancel one another out and leave no net force. It would be conceivable for gravity to push objects instead of always dragging them if it weren't always additive.

A place or thing being free from the pull of gravity is the goal of the hypothetical phenomena known as anti-gravity. It doesn't mean balancing the force of gravity with another force, like electromagnetism or aerodynamic lift, or the lack of weight under gravity felt in free fall or orbit.

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The total charge in the circuit is 240 microcoulombs.

To calculate the total charge in a series circuit with capacitors, we need to use the formula Q = CV, where Q represents the charge, C is the capacitance, and V is the voltage.

In this case, we have three capacitors connected in series with capacitances of 4 μF, 3 μF, and 2 μF, respectively. The voltage across the circuit is 260 V.

To find the total capacitance (C_total) in a series circuit, we use the reciprocal rule: 1/C_total = 1/C1 + 1/C2 + 1/C3. Plugging in the values, we get 1/C_total = 1/4 + 1/3 + 1/2.

Simplifying this equation gives us 1/C_total = (3 + 4 + 6)/12 = 13/12. Taking the reciprocal, we find C_total = 12/13 μF.

Now, we can calculate the total charge (Q_total) using Q = C_total × V. Substituting the values, we get Q_total = (12/13) μF × 260 V.

Calculating the numerical value, Q_total = (12/13) × 260 = 240 μC (microcoulombs).
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