PLEASE HELP:

The worlds fastest passenger elevator operates at an average speed of about 10 m/s. If the 60th floor is 219 meters above the 1st floor, how much time does it take the elevator to go from the first floor to the 60th? show work

(a) Period of the function f(x) = sin(x):`2π`. The amplitude of the function f(x) = sin(x) is 1.
(b) Period of the function g(x) = 5 sin(3x): `(2π)/3`. The amplitude of the function g(x) = 5.
(c) Period of the function h(x) = 2 sin(x): `2π`. The amplitude of the function h(x) = 2. 2.

(a) Expression in terms of t to represent the number of radians the point has swept out since the point started moving is `2tπ`.

(b) The formula that expresses the x-coordinate of the point in terms of the number of seconds t since the point started moving is `x = r cos(2tπ/T)` where r is the radius of the circle, and T is the period of rotation which is `2π/2π=1`second.
Substituting the given values: `x = 3 cos(2tπ)`.

(c) The formula that expresses the y-coordinate of the point in terms of the number of seconds t since the point started moving is `y = r sin(2tπ/T)` where r is the radius of the circle, and T is the period of rotation which is `2π/2π=1`second.
Substituting the given values: `y = 3 sin(2tπ)`.

The period and amplitude of the functions f(x), g(x), and h(x) are given as:(a) Period of f(x) = sin(x): 2π, amplitude = 1 Period of g(x) = 5sin(3x): `(2π)/3`, amplitude = 5Period of h(x) = 2sin(x): 2π, amplitude = 2 (b) The x-coordinate of the point in terms of t is x = 3 cos(2tπ). (c) The y-coordinate of the point in terms of t is y = 3 sin(2tπ).

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Answer:

the forces are balanced :)

Explanation:

The water would exert a force of approximately 3.42 MN on the observation window of the underwater vehicle exploring the Mariana Trench at a depth of 11,000 m.

The force that the water would exert on the observation window of an underwater vehicle exploring the Mariana Trench at a depth of 11,000 m would depend on the area of the window and the pressure of the water at that depth. The pressure at that depth can be calculated by multiplying the density of seawater (1025 kg/m3) by the gravitational acceleration (9.81 m/s2) and the depth (11,000 m), which gives us a pressure of 108.7 MPa.
To calculate the force on the observation window, we can use the F = P x A, where F is the force, P is the pressure, and A is the area of the window. Assuming a circular observation window with a radius of 0.1 m, the area would be approximately 0.0314 m2. Plugging in the pressure and area values, we get:
F = 108.7 MPa x 0.0314 m2 = 3.42 MN

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The torque is the measure of the effectiveness of a force in causing rotational motion. It is calculated by multiplying the magnitude of the force applied by the perpendicular distance from the axis of rotation to the line of action of the force, known as the moment arm.

In this case, a person pushes on a door with a force of 25 N, and the moment arm is given as 0.5 meters. To calculate the magnitude of the torque, we use the equation:

Torque = Force × Moment Arm.

Substituting the given values into the equation, we have:

Torque = 25 N × 0.5 m.

Calculating this expression gives us the magnitude of the torque.

Torque = 12.5 N·m.

Therefore, the magnitude of the torque exerted on the door is 12.5 N·m. This means that the person's force of 25 N, applied at a perpendicular distance of 0.5 meters from the axis of rotation, creates a rotational effect equivalent to a torque of 12.5 N·m on the door.

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The magnification of the image formed by the lens is -0.982.

To determine the magnification of the image formed by the lens, we can use the lens formula:

1/f = (n - 1) * (1/r1 - 1/r2)

Where f is the focal length of the lens, n is the refractive index of the lens material, r1 is the radius of curvature of the front surface, and r2 is the radius of curvature of the back surface.

Given that the radii of curvature are 34.5 cm and -26.9 cm, and the refractive index is 1.66, we can substitute these values into the lens formula to calculate the focal length.

Using the lens formula, we find that the focal length of the lens is approximately 13.54 cm.

The magnification of the image formed by the lens can be determined using the magnification formula:

m = -v/u

Where m is the magnification, v is the image distance, and u is the object distance.

Given that the object is placed 42.6 cm from the lens, we can substitute this value and the focal length into the magnification formula to calculate the magnification.

Substituting the values, we find that the magnification of the image formed by the lens is approximately -0.982.

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If the forces on an object are greater than zero,the object will definitely in the motion. This concept in accordance with law of inertia.

Force is defined as the push or pulls applied to the body. Sometimes it is used to change the shape, size, and direction of the body.

Newton's law of inertia states that a body wants to continue its motion until the external force is not acted on it.

Hence, if the force is grater than zero, the body will be in motion.

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Answer:

Mid-ocean ridges around the globe are linked by plate tectonic boundaries and the trace of the ridges across the ocean floor appears similar to the seam of a baseball.

Explanation:

Answer:360 kg m/s

Explanation:Momentum refers to an object's quantity of motion.

Formula for Momentum: p=mv

p = refers to the momentum

m = refers to the object's mass (this is represented by the unit kg or kilogram)

v = this refers to the object's velocity (this is represented by the unit m/s or meter per second)

So, given that the bike has a mass of 18 kg and is traveling at 20 m/s, then you can already get the momentum by multiplying both of these values.

p = the bike's momentum (what is being asked here)

m = 18 kg

v = 20 m/s

Thus, p = 18kg × 20 m/s = 360 kg m/s

The bike's momentum is 360 kg m/s.

Brainlist please

Both Option A) and Option B) are accurate. Reflection symmetry and rotational symmetry.

The resulting suspension of an item about its center is referred to as rotation. Things can spin in a variety of ways. the Earth's rotation. When a spherical, two half object rotates around an ideological divide inside of its center, it is a relatively common type of rotation. This focal point is known as an axis.

Glossary. Work-energy axiom for rotation states that the total gyroscopic work performed on a structural member is equal to the shift in rotating mass energy generated by the body. Rotational work is the work done on a strict body as a result of a total of torques able to integrate over the perspective through which the body rotates.

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A slip or trip and fall can cause serious injuries, and the accident may have been no fault of your own.

Accidents in cars are an unexpected or unwelcome event that happens inadvertently and frequently causes hurt, injury, damage, or loss. In accordance with the law, such an event qualifies as an injury for which compensation or indemnity is properly sought.

Any unplanned event falls under the definition of an accident. A collision between two cars is an illustration of an accident. An accident might be when you run into a friend by chance at the park or discover a $20 note on the sidewalk.

A mistaken cause results in an accident. The phrase is mostly only used to allude to accidentally brought about bad things.

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Answer:

Pluto

Explanation:

Pluto is now classified as a dwarf planet It used to be a formal planet but not anymore.

The scientist gets surprised In terms of the masses of the subatomic particles, scientists anticipated the rule of conservation of mass to apply to nuclear fission and it got failed.

The utilization of nuclear reactions to generate energy is known as a nuclear power. Nuclear fission, nuclear decay, and nuclear fusion processes are all sources of nuclear energy.

Nuclear power facilities currently produce the great bulk of the electricity generated by nuclear fission of uranium and plutonium.

In terms of the masses of the subatomic particles, scientists anticipated the rule of conservation of mass to apply to nuclear fission.

An atom's mass is not equal to the sum of the masses of the subatomic particles that make it up in actuality.

The energy that bonds the subatomic particles is the reason behind this. When a link is broken, the mass of the energy of the bonds is lost, resulting in what we now refer to as a mass defect.

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Answer:

I don't know the answer but I can say the answer isn't B, so don't pick B.

Explanation:

I got it wrong on edge test, i picked B but, B is not correct.

We have demonstrated that (pω)ω∈Ω is the point mass function of some distribution, and that the random variable X has a point mass function PX equal to (pω)ω∈Ω.

In order to show that (pω)ω∈Ω is the point mass function of some distribution, we need to demonstrate that it satisfies the properties of a probability distribution.

a) Let's consider the properties of a probability distribution. Firstly, the values of pω must be non-negative for all ω ∈ Ω. This is true since pω is defined as the product of two non-negative values hω1 and hω2.

Secondly, the sum of probabilities over all possible outcomes must be equal to 1. In this case, we need to show that the sum of (pω)ω∈Ω over all possible ω in Ω is equal to 1. To do this, we can consider the sum:

Σ(pω)ω∈Ω = Σ(hω1 hω2)ω∈Ω

By the properties of the point mass function h, we know that Σhω1 = 1 and Σhω2 = 1. Therefore, the above expression becomes:

Σ(pω)ω∈Ω = Σ(hω1 hω2)ω∈Ω = 1 * 1 = 1

Thus, we have shown that (pω)ω∈Ω satisfies the properties of a probability distribution.

b) Now let's consider the random variable X(ω) = ω1 + ω2 and show that its point mass function PX is equal to (pω)ω∈Ω.

To calculate PX(x) = P({ω ∈ Ω : X(ω) = x}), we need to consider the event where the sum of the components ω1 and ω2 is equal to x. This can be expressed as:

{ω ∈ Ω : X(ω) = x} = {(ω1, ω2) ∈ Ω : ω1 + ω2 = x}

Now, notice that this event is equivalent to the event {ω1 = n, ω2 = x - n} for any fixed n. The probability of this event is given by pω1 pω2 = hω1 hω2, which matches the point mass function (pω)ω∈Ω.

By considering all possible values of n, we can cover all the cases for X(ω) = x, and therefore, we have shown that PX(x) is equal to (pω)ω∈Ω.

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Answer:

Mass and kinetic energy have a positive relationship, which means that as mass increases, kinetic energy increases, if all other factors are held constant.

In this state, Kinetic energy is equal to half of the product mass and velocity. SI unit is joules. So it's if the mass is doubled then the kinetic energy also gets doubled.

When the Bowen ratio is low and negative, it means the surface is wet, and the latent heat flux is significant, while the sensible heat flux is minor. Because of Arctic sea ice's nature, the Bowen ratio is expected to be small and negative.

During summer, the Arctic sea ice's surface temperatures are often above 0° C, with a temperature inversion expanding from the surface to altitudes of some hundred meters.

For such conditions, the sensible heat flux H is expected to be positive, while the latent heat flux H L is expected to be small or zero. The Bowen ratio B is expected to be small and negative.

Let us discuss each term in more detail. Sensible heat flux (H):The rate of heat transfer from the Earth's surface to the atmosphere due to the temperature difference is referred to as the sensible heat flux. The earth surface warms up due to solar radiation, and then the warm surface transfers heat to the cooler air. The air then heats up and rises, creating convection currents that aid in the heat transfer process.

Sensible heat flux is positive when heat moves from the surface to the atmosphere.Latent heat flux (H L ):The heat required for a phase transition, such as a liquid converting to a gas, is referred to as latent heat. The energy required to convert a material from one phase to another is referred to as latent heat. Evaporation and transpiration are the two main processes that contribute to the latent heat flux.

Because Arctic sea ice's surface temperature is typically above the melting point of ice during summer, the latent heat flux is expected to be small or zero.

Bowen ratio (B):The Bowen ratio is a measure of the ratio of sensible heat flux to latent heat flux. It's a dimensionless quantity that helps to understand the surface's evapotranspiration efficiency.

When the Bowen ratio is low and negative, it means the surface is wet, and the latent heat flux is significant, while the sensible heat flux is minor. Because of Arctic sea ice's nature, the Bowen ratio is expected to be small and negative.

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1. Sensible heat flux (H) is negative, indicating heat transfer from the surface to the atmosphere.
2. Latent heat flux (H_L) is positive, indicating heat transfer from the atmosphere to the surface through evaporation.
3. Bowen ratio (B) is negative, indicating that the sensible heat flux is larger than the latent heat flux. The magnitude of the Bowen ratio can vary depending on the specific conditions.

In summer, surface temperatures over Arctic sea ice are often above 0°C, and there is a temperature inversion that extends from the surface to altitudes of a few hundred meters.

1. Sensible heat flux (H): The sensible heat flux is the transfer of heat between the surface and the atmosphere due to temperature differences. In this case, the sensible heat flux is expected to be negative. This means that heat is being transferred from the surface (warmer) to the atmosphere (cooler). The magnitude of the sensible heat flux can vary depending on the temperature difference between the surface and the atmosphere, but it is generally larger when the temperature difference is greater.

2. Latent heat flux (H_L): The latent heat flux is the transfer of heat between the surface and the atmosphere due to the evaporation and condensation of water. In this case, the latent heat flux is expected to be positive. This means that heat is being transferred from the atmosphere (warmer) to the surface (cooler) through the process of evaporation. The magnitude of the latent heat flux depends on factors such as the availability of moisture and the temperature difference between the surface and the atmosphere. It can be larger when there is more moisture available for evaporation and when the temperature difference is greater.

3. Bowen ratio (B): The Bowen ratio is the ratio of sensible heat flux to latent heat flux. It provides information about the relative importance of sensible and latent heat transfer processes. In this case, the Bowen ratio is expected to be negative. This indicates that the sensible heat flux is larger than the latent heat flux. The magnitude of the Bowen ratio can vary depending on the specific conditions, but it is generally larger when the sensible heat flux is dominant.

To summarize:
- Sensible heat flux (H) is negative, indicating heat transfer from the surface to the atmosphere.
- Latent heat flux (H_L) is positive, indicating heat transfer from the atmosphere to the surface through evaporation.
- Bowen ratio (B) is negative, indicating that the sensible heat flux is larger than the latent heat flux. The magnitude of the Bowen ratio can vary depending on the specific conditions.

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All living organisms are mainly composed of the elements: Oxygen, Carbon, Hydrogen, Nitrogen, Phosphorus.

The correct answer choice is option c.

Living organisms are those things that has life. They include plants and animals. Living organisms be it plants or animals are composed of important elements such as carbon, oxygen and others.

However, there are certain characteristic features which living organisms possess. Some of these characteristics of living things are as follows:

Other characteristics of living organisms are:

In conclusion, we can now confirm from above the explanation given above that living things are made up of certain elements.

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A comet with just an orbit last 200 years or less is referred to as a periodic and short-period comet, including Halley. Compared to long-period comet, whose orbits endure for thousands of years.

Correct option is, B.

An astronomical object in interstellar that isn't gravitationally connected to a star, such as an asteroid, comet, or rogue planet, is referred to as an interstellar object.

Comets are frozen remnants of the solar system's origin made of ice, rock, and dust. These can be several miles or tens of miles across, but when they approach it Sun, they heat it up and eject gases or dust into a luminous head that may be as big as a planet.

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u=10m/s

v=15m/s

acceleration=

v_u/ t

5/10

0.5

Sound waves carry energy parallel to the motion of the wave, while light waves carry energy perpendicular to it.

We know that light is electromagnetic wave and also we have to know that light is a transverse wave. The implication of that is that the direction of the wave motion is parallel to that of the disturbance that is causing the wave.

Light waves have higher intensity than sound waves and can cause more damage. The human eye is much more sensitive to light than the human ear is to sound.

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Answer:

D is  the answer
Sound waves carry energy parallel to the motion of the wave, while light waves carry energy perpendicular to it.

Explanation:

Answer:

no sabo por q no mi entender

Answer: movement, or a tendency to move, toward a center of gravity, as in the falling of bodies to the earth.

Answer:

something that keep you from floating :(

Explanation:

Increasing human population have advanced the problem of the impact of humans on the environment as shown above.

We know that the environment has to do with our natural surroundings. The environment has to do  with that space that is around us from which we obtain the materials and energy that are necessary to support life.

We know that the greatest pressure that is placed on the environment and the resources that is in it comes from anthropogenic activities. These are the activities of the people that live within the environment. The extraction of resources for the provision of energy as well as construction pts great pressure on the environment

As we look at the image, we call to mind that the the explosions in the population of human beings have put more pressure on the environment and thus made it unable to support the human population.

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Answer:

The quadriceps consists of four muscles: the skinny rectus femoris and the three huge “vasti” — vastus lateralis/intermedius/medialis. The vasti are only elongated by knee flexion, which is limited to about 120˚ when the calf hits the hamstrings. The vasti cannot be stretched strongly.

Answer:Masseter and temporalis

Why it’s unstretchable: The jaw can only open so far.

Why it’s a dang shame: Jaw tension is epidemic, and trigger points in these muscles cause a wide array of strange face and head pains, including toothaches, headaches, and earaches.

Answer:

sorry do not speak Spanish so I would not be able to help you probably cannot read this but I would be happy to help you if you follow me and bake English so thank you

Answer:

709.5 cal

Explanation:

masa m de la barra de aluminio = 100 g

temperatura ambiente = 27 ° C

Asumiremos que la barra de aluminio está en equilibrio térmico con el ambiente.

Esto significa que la temperatura inicial de la barra es de 27 ° C

temperatura final a la que la barra debe calentarse = 60 ° C

el aumento de temperatura ΔT será

ΔT = 60 ° C - 27 ° C = 33 ° C

capacidad calorífica específica c del aluminio = 0.215 cal/g°C

Calor C requerido = mcΔT

C = 100 x 0.215 x 33 = 709.5 cal

Friction is negligible, but air resistance is not. So, the applied forces are Drag force, Normal reaction force, Gravity force and Thrust force. Thus, the correct options are B, C, D and F.

Force is defined as an external agent capable of changing the state of rest or motion of a body that has a magnitude and a direction that is a vector quantity.

The Force acting on the jet plane are as follows:

1. Gravitational force - It is defined as the weight produced due to the gravitational pull of the earth acting along the words downwards.

2. Drag force - It is defined as the force which is due to the air which acts along the opposite direction to the direction of the motion jet.

3. Thrust force - It is defined as the force which is  due to the released gas by the jet plane into the environment that acts along the direction of the motion of the jet plane

4. Normal Force - It is defined as the force which is exerted by the ground.

So, there are four forces acting on the plane. Thus, the correct options are B, C, D and F.

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Answer:

Physical

Explanation:

The physical properties of a substance change, but the identity of the substance doesn't change

Answer:

\ c,. ,;

Explanation:

Answer:

We can use Coulomb's law to solve this problem:

F = k * q1 * q2 / r^2

where F is the force between the two charges, k is Coulomb's constant (k = 9 x 10^9 N m^2 / C^2), q1 and q2 are the magnitudes of the charges, and r is the distance between them.

We know the force F, the distance r, and the magnitude of one of the charges q1. We can rearrange the equation to solve for the magnitude of the other charge q2:

q2 = F * r^2 / (k * q1)

Substituting the values we have:

q2 = (250 N) * (0.15 m)^2 / (9 x 10^9 N m^2 / C^2 * 6.5 x 10^-5 C)

Simplifying:

q2 = 8.65 x 10^5 C

Therefore, the magnitude of the other charge is 8.65 x 10^5 C.

The momentum thickness at the trailing edge of the blade in cm is 0.0000585 cm.  

The momentum thickness at the trailing edge of a blade in a wind tunnel, we need to use the following equation:

BM = ρ * V * S

The surface area of a blade can be calculated using the length, chord length, and angle of attack of the blade. For a NACA 0012 airfoil, the surface area can be calculated as:

S = 0.0012 * L * C

L = 2 meters and C = 0.05 meters for the blade of a wind tunnel, we get:

S = 0.0012 * 2 * 0.05

= 0.0006 meters

The density of air at standard temperature and pressure (STP) is approximately 1.225 kg/m. Substituting this value into the equation for BM, we get:

BM = 1.225 kg/m * 1.1 m/s * 0.0006 meters

= 0.0000714 kg

To convert this mass from kilograms to grams, we divide by 1000:

BM = 0.00714 kg

Finally, we can convert this mass from kilograms to cm by dividing by the mass of 1 cm of air:

BM = 0.00714 kg / (1.225 kg/m * 1000 kg/m)

= 0.0000585 cm

Therefore, the momentum thickness at the trailing edge of the blade in cm is 0.0000585 cm.  

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