45. A 8-kg block is set moving with an initial speed of 6 m/s on a rough horizontal surface. If the force of friction is 12 N, approximately how far does the block travel before it stops?A) 1.5 mB) 3 mC) 6 mD) 9 mE) 12 m

The pressure of the gas in the manometer shown in the image is greater than the atmospheric pressure. This is due to the height difference between the liquid in the two sides of the manometer.

Atmospheric pressure is the pressure exerted by the air around us and is determined by the weight of the air above us. The greater the height of the air above us, the higher the atmospheric pressure.

In the manometer, the air pressure is greater on one side because the column of liquid is higher on that side. This is due to the fact that liquid in a manometer is not affected by atmospheric pressure.

Therefore, the pressure of the gas inside the manometer is greater than the atmospheric pressure.

The difference between the two pressures is calculated using the formula "P1 = P2 + (rho)gh",

where P1 is the pressure in the manometer, P2 is the atmospheric pressure, rho is the density of the liquid in the manometer, g is the acceleration due to gravity, and h is the height of the column of liquid in the manometer.

The pressure of the gas in the manometer is greater than the atmospheric pressure because of the difference in height between the two columns of liquid in the manometer.

The difference between the two pressures is calculated using the formula "P1 = P2 + (rho)gh".

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Rounding to the nearest mile, the estimated distance you can travel is approximately 198 miles.

To estimate the distance you can travel in 4 hours and 50 minutes at an average speed of 41 miles per hour, we need to convert the time to hours.

4 hours and 50 minutes is equivalent to 4.83 hours (since 50 minutes is 50÷60 = 0.83 hours).

Now, we can calculate the distance traveled using the formula: distance = speed × time.

Distance = 41 miles/hour × 4.83 hours

Distance ≈ 198.03 miles

Rounding to the nearest mile, the estimated distance you can travel is approximately 198 miles.

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Answer:

Large above ground mausoleums were not common in the elite Shang burials.

Explanation:

Large, above the ground mausoleums were not common so the answer is option B.

Kinetic energy: 1/2 * m * v^2

Where:

h0=337m

hA = 17 m

hB = 157 m

hC = 317 m

Initial energy = final energy

PE0 + KE0 = PE2 + KE2

KE0 = velocity = 0

KE= 1/2 mv^2 = 0

PE0 = initial potential energy = mgh

m=mass

h=height

g= gravity= 10 m/s^2

For point A.

Instead oh h0=337 and hA=17m we can state that

H0=337-17 = 320

HA= 0 (so PEA=0 )

PE0 = KEA

mgh0 =1/2 m va^2

gh0 = 1/2 va^2

10 * 320 = 1/2 va^2

√(10 * 320)*2 = va

va = 80 m/s

Same process for point B

mgh0 = 1/2 m vb

g h0 = 1/2 vb

10 * 180 = 1/2 vb^2

√(10 * 180)*2 = vb

vb= 60 m/s

Point C:

H0=337-317=20

vc= √(10 * 20)*2

vc= 20 m/S

√

The time taken for the rock to hit the ground from the roof top is 1.1 seconds. Given the data in the question; Since the rock was initially at rest. Initial velocity.

What is the starting velocity formula?

Beginning velocity is equal to u, final velocity is equal to v, time is equal to t, displacement is equal to s, and acceleration is equal to a. If any of the parameters are known, the starting velocity formula is used to determine the body's initial velocity. The unit of initial velocity is meters per second (m/s).

What is the starting velocity for motion?

As a result, the velocity profile is the object's speed before the change brought on by acceleration. Its velocity is going to be the final speed after the object has been accelerating for a while. Hence, the beginning velocity refers to the speed at which motion begins. Its velocity at various time t = 0 is obviously zero.

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The answer is 118 J :)

Explanation:

38 +80 = 118.

the work done is:

The work done by a girl who runs a stair case of 20 steps each 8.0cm at a mass of 50 kg can be calculated using the formula for work, which is:

Work = Force × DisplacementIn this case, the force is the weight of the girl, which is equal to her mass multiplied by the acceleration due to gravity.

The displacement is the total height of the staircase, which is equal to the number of steps multiplied by the height of each step. So, the work done is:

Work = (Mass × Acceleration due to gravity) × (Number of steps × Height of each step)

Work = (50 kg × 9.8 m/s²) × (20 × 0.08 m)Work = 784 N × 1.6 mWork = 1254.4 JTherefore, the work done by the girl is 1254.4 J.

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The rate of change of the distance between the two particles is 10 units per second.

Let's call the distance between particle A and particle B "d". To find the rate of change of "d", we need to take the derivative of "d" with respect to time. By using the Pythagorean theorem to relate the distance between the two particles to their x and y coordinates:

d^2 = x^2 + y^2

Taking the derivative of both sides with respect to time, we get:

2dd/dt = 2x(dx/dt) + 2y(dy/dt)

where dx/dt is the rate of change of particle A's x-coordinate (which is equal to 2), and dy/dt is the rate of change of particle B's y-coordinate (which is equal to 3).

We need to find x and y in terms of time. Particle A is moving at a constant rate of 2 per second along the positive x-axis, so its x-coordinate is given by:

x = 2t

where t is time in seconds.

Similarly, particle B is moving at a constant rate of 3 per second along the positive y-axis, so its y-coordinate is given by:

y = 3t

Substituting these expressions for x and y into our equation for the rate of change of "d", we get:

2dd/dt = 2(2)(1) + 2(3)(1) = 10

So the rate of change of the distance between the two particles is 10 units per second.

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Answer:

We would likely see a decrease in the demand for energy drinks.

Explanation:

The demand of energy drink will decreases and may lead to price fall of energy drink too.

In economics, the relationship between the quantity of a good or service that producers want to sell at different prices and the quantity that consumers want to buy is known as supply and demand. It serves as the primary model for determining prices in economic theory. The interaction of supply and demand in a market determines the price of a good.

When scientists provide evidence that people who drink energy drinks are more likely to have a heart attack than people who do not drink energy drinks, the demand of energy drink in market will fall which may lead to price fall of energy drink too.

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Answer:

Thorium 227 (also known as Radioactinium)

Answer:

Ello, estoy aquí para ayudar, pero hablo español con optimismo, comprenderá lo que estoy diciendo. Intentaré ayudarlo. Espero que tengas un buen dia <3

Explanation:

Hi there!

Recall the equation for momentum:
\(\large\boxed{p = mv}\)

p = linear momentum (kgm/s)
m = mass (kg)

v = velocity (m/s)

We can calculate each object's momentum and compare.

Cement truck:
\(p = 20000 \cdot 5 = 100000kg\frac{m}{s}\)

Race car:
\(p = 1000 \cdot 90 = 90000 kg\frac{m}{s}}\)

Since 100,000 > 90,000, the cement truck has the greater momentum.

Answer:

the answer is 1500 you multiply the distance and force to get work

Answer:

Velocity V = 13 m/s

Explanation:

Given:

m = 1.2 kg

p = 15.6 kg·m/s

__________

V - ?

Momentum:

p = m·V

Velocity:

V =p /m  = 15.6 / 1.2 ≈ 13 m/s

microphone for example

Answer:

A. Two times

Explanation:

Since the equation of the momentum is  p=mv, object A has 16 kg*m/s of momentum while object B has only a momentum of 8 kg*m/s

Answer:

six crewed landings

Explanation:

Answer:

c

Explanation:

The amount of mass used up in holding a nucleus together the mass defect represent.

Thus, The term "mass defect" refers to the discrepancy between the actual atomic mass and the expected mass obtained by multiplying the mass of the protons and neutrons in the nucleus by a constant factor.

The anticipated mass obtained by combining the masses of the nucleons is less than the actual atomic mass. The binding energy that is produced when a nucleus forms accounts for this extra mass.

The mass defect is a result of some of the mass being converted to energy during the formation of a nucleus. The real mass of an atomic nucleus is therefore less than the mass of the constituent particles.

Thus,  The amount of mass used up in holding a nucleus together the mass defect represent.

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Answer:_COC1\/2+_H\/2O>_HC1+CO\/2

Explanation:

Need help asap

We are asked to determine the magnitude of the force that acts parallel to the nail. To do that we will add the torque that acts on the point of contact. First, we draw a free-body diagram of the situation:

We have decomposed the force of the nail into its horizontal and vertical components. The horizontal component does no torque since there is no distance parallel to the force to the point of contact.

Now, we add the torques. We consider counterclockwise as positive:

Since we consider the moment before there is no angular acceleration the sum of torques adds up to zero:

Now, we determine the value of Ry as a function of "R" using the trigonometric function cosine:

Now, we multiply both sides by "R":

Now, we substitute in the sum of torques:

Now, we solve for "R". First, we add "30F" to both sides:

Now, we divide both sides by 5cm:

Now, we divide both sides by cosine:

Now, we substitute the values:

Solving the operations:

Therefore, the force on the nail is 1042.8 Newtons.

The kinetic energy of the spring is obtained as 12 J. Option C

We know that the kinetic energy is the energy that is required to stretch the spring. We can use the graph that has been shown to show the force constant of the spring.

We can find the force constant as the slope of the graph as follows;

K = \(y_{2} - y_{1} /x_{2} - x_{1}\)

K = 60 - 0/0.3 - 0.2

K = 60/0.1

K = 600 N/m

We then have;

W = KE = 1/2 Kx^2

Thus;

KE = 0.5 * 600 * (20 * 10^-2)^2

KE = 12 J

It would have a kinetic energy of 12 J.

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Answer: This is the graph we are supposed to fill out.

Explanation:

The electric force experienced by an electron in the hydrogen atom is significantly stronger than the gravitational force experienced by the electron.

The electric force is responsible for holding the electron in orbit around the nucleus, while the gravitational force between the two is negligible. This is due to the fact that the electric force is much stronger than the gravitational force, by a factor of approximately 10^36.

This means that the electric force is the dominant force acting on the electron in the hydrogen atom, and determines its behavior within the atom. The strength of the electric force is determined by the charges of the particles involved, while the strength of the gravitational force is determined by their masses. Since the electron is much lighter than the nucleus, the gravitational force between the two is negligible in comparison to the electric force.

In summary, the electric force experienced by an electron in the hydrogen atom is much stronger than the gravitational force experienced by the electron, and is the dominant force responsible for the electron's behavior within the atom.

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The uncertainty given as "0.2 cm" in the report represents the precision of the measurement. This type of uncertainty is known as random or statistical uncertainty

Random uncertainty arises as a result of measurement technique limitations, such as the limitations of the measuring instrument or the experimenter's ability to read the instrument. Random uncertainty can be reduced by improving measurement technique or taking more measurements to improve result precision.

The reported value of "23.6 cm" is the best estimate of the true value of the quantity being measured in this case, and the uncertainty of "0.2 cm" indicates the range of values within which the true value is likely to lie. It means that if the measurement were repeated multiple times, the values obtained with a certain level of confidence (typically 95% confidence interval) would be expected to fall within the range of 23.4 cm to 23.8 cm.

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The red paint will appear no colour when it is illuminated with pure blue light.

Thus, we can conclude that the red coloured object appears colourless as it is illustrated by pure blue light.

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Light has both a wave and a particle nature. Particles have a wave nature as well, and therefore their position can not be specified with absolute precision

This is a consequence of the Heisenberg uncertainty principle enunciated in 1927, after the works of the French physicist Louis De Broglie who proposed the existence of matter waves, that is to say, that all matter has a wave associated with it.

The uncertainty principle postulates that the fact that each particle has a wave associated with it, imposes restrictions on the ability to determine its position and speed at the same time.

It is impossible to measure simultaneously (according to quantum physics), and with absolute precision, the value of the position and the momentum (linear momentum) of a particle.

So, the greater certainty is sought in determining the position of a particle, the less is known about its linear momentum and, therefore, its mass and velocity.

It should be noted that this uncertainty does not derive from the measurement instruments, but from the measurement itself. Because, even with the most precise devices, the uncertainty in the measurement continues to exist.

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As per the given data of velocity of sound wave through different gas medium, sound wave travels through methane gas more fastly than through ammonia.

Sound waves are longitudinal mechanical waves passing through a medium. In sound waves,, the oscillation of particles is in the same direction of wave propagation. Such waves are called longitudinal waves.

Sound waves travels through air with a speed of 340 m/s. The speed of the wave through different medium depends on  the density of the medium as well as frequency.

The speed of sound wave through ammonia gas is 415 m/s. Speed through methane gas is 450 m/s. Thus, sound waves travels fastly through methane than through ammonia.

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Answer:

m - 200 kg

ti - 0⁰c

clF - 79,7kcal, kg ( calor latente de fusión)

pf - 0⁰c

formulas:

QL- cL.m

solución - Ap camosla ecqación.

QL- (79,7 kcal,kg) .200 kg

Resultado ,la cantidad de calor absorbe lamasa de hieloes

Q2 -15,940 kcal

In an aqueous solution, ions are the constituents that can transmit charge in a current. Ions are atoms or molecules that have a net electric charge due to the loss or gain of electrons.

These ions, which can be positively or negatively charged, move through the solution and facilitate the flow of electric current. When electric current is applied to an aqueous solution, the ions are able to move and carry charge from one place to another. This movement of ions is called ionic conduction and is the basis for the electrical conductivity of aqueous solutions.

   In aqueous solutions, the ions are usually in the form of charged particles, such as sodium (Na+) and chloride (Cl-). These ions can move through the solution, carrying charge with them, allowing them to transmit a current.

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The answer is False. A polarized material does not need to have a nonzero net electric charge. Polarization occurs when the positive and negative charges within a material are displaced relative to each other, creating an electric dipole moment.

This can happen in materials such as dielectrics or insulators, which do not conduct electricity. The net electric charge of a polarized material can still be zero, as the overall positive and negative charges remain balanced, but the charges are spatially separated. Polarization plays an important role in phenomena such as capacitance, dielectric constant, and polarization-induced electric fields.

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