the moon illusion can best be explained in terms of the relationship between a relative motion and relative height. b. atmospheric air pressure and diffusion of light waves. c. place theory and frequency theory. d. perceived distance and perceived size. e. proximity and closure.

Parasympathetic stimulation causes airways to constrict.

The parasympathetic stimulation is a part of the autonomic nervous system and the parasympathetic nervous system. It's responsible for regulating various organs and glands of the body during rest and recuperation phases of a person. Its primary function is to lower heart rate, relax muscles, stimulate digestion, and constrict pupils, among other things.

The parasympathetic nervous system's primary aim is to preserve energy. This implies that the body's functions, such as blood pressure, heart rate, and digestion, are slowed or reduced. The bronchioles, which are the little airways in the lungs, constrict, making it more difficult to breathe. This makes it more difficult to breathe air in and out of the lungs.

As a result, the quantity of oxygen that reaches the body's tissues is reduced. The effect of the parasympathetic nervous system is the opposite of the sympathetic nervous system, which causes the airways to dilate. The sympathetic nervous system is responsible for the body's fight or flight response. It prepares the body to fight or flee when it is in danger.

Therefore, When the parasympathetic nervous system is stimulated, the airways constrict.

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Answer:

Epicenter

Explanation:

The epicenter is the location of tectonic plate movement where an earthquake begins.

Answer:

Momentum is the product of mass and velocity. The two types of momentum are angular and linear.

Explanation:

Answer:

Explanation: (Momentum is mass * velocity. Its units, in the SI system are kilogram meter per second) What is Inertia?

In physics, momentum is the product of mass and velocity. The greater the product of this equation, the greater the momentum. In science, there are two types of momentum: angular and linear, which concern different types of moving objects. However, that is not where the definition stops. The word momentum is also used as part of everyday speech, and is one of the very few physics concept whose metaphorical definition is the same as its actual one.

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Answer:

exposing it to a flame to see if it catches on fire

Explanation:

A chemical property is when the matter changes into a different substance. This is true when you expose it to a flame because if a substance is burned, it will change into a new substance. All the other options are examples of physical changes.

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Answer:

heat energy

Explanation:

heat is the flow of thermal energy. A whole branch of physics

Answer:

Dynamo

Explanation:

As we all know, there are dynamos in bicycles. When we paddle the cycle, the wheels of the cycle rotates by generating kinetic energy. When the wheels rotate, the dynamo starts to rotate. This makes the motor inside the dynamo rotates and generate electrical energy.

Answer:

Explanation:

F = ma, so filling in:

15000 = 30000a and

a = .50 m/s/s

The acceleration of a train is 0.50 \(m/s^{2}\).

Acceleration is the rate of change of the velocity of an object with respect to time.

F = ma

a = F/m

a = 15000/30000

a = 0.50 \(m/s^{2}\)

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Answer:

Climbing stairs and lifting objects is work in both the scientific and everyday sense—it is work done against the gravitational force. When there is work, there is a transformation of energy. The work done against the gravitational force goes into an important form of stored energy that we will explore in this section.



Figure 1. (a) The work done to lift the weight is stored in the mass-Earth system as gravitational potential energy. (b) As the weight moves downward, this gravitational potential energy is transferred to the cuckoo clock.

Let us calculate the work done in lifting an object of mass m through a height h, such as in Figure 1. If the object is lifted straight up at constant speed, then the force needed to lift it is equal to its weight mg. The work done on the mass is then W = Fd = mgh. We define this to be the gravitational potential energy (PEg) put into (or gained by) the object-Earth system. This energy is associated with the state of separation between two objects that attract each other by the gravitational force. For convenience, we refer to this as the PEg gained by the object, recognizing that this is energy stored in the gravitational field of Earth. Why do we use the word “system”? Potential energy is a property of a system rather than of a single object—due to its physical position. An object’s gravitational potential is due to its position relative to the surroundings within the Earth-object system. The force applied to the object is an external force, from outside the system. When it does positive work it increases the gravitational potential energy of the system. Because gravitational potential energy depends on relative position, we need a reference level at which to set the potential energy equal to 0. We usually choose this point to be Earth’s surface, but this point is arbitrary; what is important is the difference in gravitational potential energy, because this difference is what relates to the work done. The difference in gravitational potential energy of an object (in the Earth-object system) between two rungs of a ladder will be the same for the first two rungs as for the last two rungs.

Converting Between Potential Energy and Kinetic Energy

Gravitational potential energy may be converted to other forms of energy, such as kinetic energy. If we release the mass, gravitational force will do an amount of work equal to mgh on it, thereby increasing its kinetic energy by that same amount (by the work-energy theorem). We will find it more useful to consider just the conversion of PEg to KE without explicitly considering the intermediate step of work. (See Example 2.) This shortcut makes it is easier to solve problems using energy (if possible) rather than explicitly using forces.

More precisely, we define the change in gravitational potential energy ΔPEg to be ΔPEg = mgh, where, for simplicity, we denote the change in height by h rather than the usual Δh. Note that h is positive when the final height is greater than the initial height, and vice versa. For example, if a 0.500-kg mass hung from a cuckoo clock is raised 1.00 m, then its change in gravitational potential energy is

mgh=(0.500 kg)(9.80 m/s2)(1.00 m) =4.90 kg⋅m2/s2=4.90 Jmgh=(0.500 kg)(9.80 m/s2)(1.00 m) =4.90 kg⋅m2/s2=4.90 J

Note that the units of gravitational potential energy turn out to be joules, the same as for work and other forms of energy. As the clock runs, the mass is lowered. We can think of the mass as gradually giving up its 4.90 J of gravitational potential energy, without directly considering the force of gravity that does the

Answer:

A incresing speading up

Explanation:

According to astronomers, there are approximately 2 trillion galaxies distributed across the observable universe.

The observable universe is the part of the universe that we can observe from Earth, and it includes all the galaxies, stars, and other celestial objects that we can detect with our telescopes and other instruments.

The size of the observable universe is estimated to be around 93 billion light-years in diameter, which means that the most distant objects we can see are around 46.5 billion light-years away.

One of the ways that astronomers estimate the number of galaxies in the observable universe is by using deep sky surveys, which involve observing a small region of the sky for an extended period of time to detect faint, distant objects.

By extrapolating from the number of galaxies detected in these surveys, astronomers can estimate the total number of galaxies in the observable universe. Despite the advances in observational and theoretical techniques, our understanding of the universe is still incomplete, and there is much that we don't know.

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Answer:

Explanation:

Answer:

tge motion of the object is not constant or uniform

Answer: It may be speeding up or slowing down.

Explanation:

Answer: D- Each chromosome in a cell is made up of two chromatids, which are each made up of molecules of DNA

Explanation:

A macromolecule is a large molecule that is made of many smaller units. Chromosomes are macromolecules that contain all of the genetic information in a cell. Chromosomes are each made of two smaller units called chromatids. Chromatids are each made up of molecules of DNA. Therefore, the correct description of the hierarchy of genetic material in a cell is that each chromosome in a cell is made up of two chromatids, which are each made up of molecules of DNA. The structures become more and more microscopic as one moves down the hierarchy.

Answer:

These two groups of planets are separated by the asteroid belt, a disk of small rocky bodies orbiting the sun between Mars and Jupiter.

Explanation:

Your welcome!

The rotational kinetic energy of the object having a moment of inertia of 21 kg.m² and angular speed of 122 radians/s is 156,282 Joules.

To find the rotational kinetic energy of an object, you can use the following formula:

Rotational Kinetic Energy (K) = 0.5 × Moment of Inertia (I) × Angular Speed² (ω²)

In this case, the moment of inertia (I) is 21 kg·m² and the angular speed (ω) is 122 radians/s. Plugging these values into the formula, we get:

K = 0.5 × 21 kg·m² × (122 radians/s)²

Now, let's calculate the rotational kinetic energy:

K = 0.5 × 21 kg·m² × 14884 (radians/s)²
K = 10.5 kg·m² × 14884 (radians/s)²
K = 156,282 kg·m²/s²

Therefore, the rotational kinetic energy of the object is 156,282 Joules.

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1.) Its angular speed is 6.28 rad/s.

2.) The speed of the tip of the hand 9.42 cm every second.

The angular speed of the second hand on a watch is calculated as the ratio of the circumference of the circle the hand follows to the total time taken to complete one rotation, typically measured in radians per second. The radius of the circle the second hand moves on is 1.5 cm. So, the circumference of the circle is 2π ×1.5 cm, which gives us 9.42 cm. Thus, the angular speed of the second hand is 6.28 rad/s.

The speed of the tip of the second hand can be calculated as the product of the radius of the circle it moves on and its angular speed. Thus, the speed of the tip of the second hand is equal to 9.42 cm/6.28s or 1.51 cm/s.

To express the answer in Angular Velocity, we would say the tip of the second hand has a rotational speed of 1.51 cm/s at an angular velocity of 6.28 rad/s. This means that the tip of the second hand spins around six times each second and covers a distance of 9.42 cm every second.

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The wavelength of the laser light is 514nm.

The principal maxima are defined by

d sin∅ = mλ (m=0,1,2.3...)

For m = 1, λ = d sin Φ

The angle and first order (m=1) maxima are located here between the center (m=0),.

The information provided regarding the distance between maxima and the grating-to-screen distance can be used to calculate the value of:

Tan Ф = 0.5m/1.76 m = 0.284

Therefore, Ф = 15.8° and sin Ф = 0.273

The inverse of the number of grating lines per centimeter is used to determine how far apart grating "slits" are.

d = 1/5735cm⁻¹ = 1.88×10⁻⁴cm = 1.88×10³ nm

What is wavelength?

A waveform output that is carried in space or down a wire has a wavelength, which is the separation between two equal places (adjacent crests) in the consecutive cycles.

The wavelength is λ = d sinФ = (1.88 ×10³nm) (0.273) = 514nm

Therefore, the wavelength of the laser light is 514nm.

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The wavelength of the laser light is 514nm.

What is wavelength?

A waveform output that is carried in space or down a wire has a wavelength, which is the separation between two equal places (adjacent crests) in the consecutive cycles.

The principal maxima are defined by

d sin∅ = mλ (m=0,1,2.3...)

For m = 1, λ = d sin Φ

The angle and first order (m=1) maxima are located here between the center (m=0),.

The information provided regarding the distance between maxima and the grating-to-screen distance can be used to calculate the value of:

Tan Ф = 0.5m/1.76 m = 0.284

Therefore, Ф = 15.8° and sin Ф = 0.273

The inverse of the number of grating lines per centimeter is used to determine how far apart grating "slits" are.

d = 1/5735cm⁻¹ = 1.88×10⁻⁴cm = 1.88×10³ nm

The wavelength is λ = d sinФ = (1.88 ×10³nm) (0.273) = 514nm

Therefore, the wavelength of the laser light is 514nm.

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Answer:

C.

Carbohydrates and proteins are more important to a healthy life than triglycerides.

Sorry if it wrong.

Explanation:

A resistance that varies as the patient moves the joint through a range of motion while the speed of motion does not change is classified as isokinetic exercise.

Isokinetic exercise is a type of exercise training that uses a special machine. The exercise machine generates different levels of resistance. your movements are at a constant speed, irrespective of the amount of force you apply. The machine can always match the amount of force you apply.

Walking on a treadmill is an example of an isokinetic exercise. Cycling on an exercise bike is another example. During walking at a constant speed, muscles contract at the same speed throughout the range of motion.

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A typical AC brushless alternator/generating system used on a modern large aircraft usually uses two magnetic fields to make the system work: a rotor magnetic field and a stator magnetic field.

The rotor magnetic field is produced by a set of permanent magnets or an electromagnetic field generated by direct current (DC) fed to the rotor windings, while the stator magnetic field is produced by three-phase alternating current (AC) fed to the stator windings.

The relative motion between the rotor and stator magnetic fields induces an AC voltage in the stator windings, which is rectified and regulated to produce a DC voltage for the aircraft's electrical systems.

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Answer:

no we can send rovers into space to explore i am reading the martian but this is my opinion it depends on what nasa decides

Explanation:

Answer:

of its mass and its acceleration

Explanation:

based on Newton's second law of motion

Given :

Potential ,

\(P=644 \times 10^6\ V\\ \\P=6.44\times 10^8\ V\)

Uniform magnetic field , B = 0.02 T .

Mass of proton , \(M_p=1.67\times 10^{-27}\ kg\) .

Charge on proton , \(e=1.6\times 10^{-19}\ C\) .

Also , velocity of proton is perpendicular to magnetic field .

To Find :

The radius of the proton's resulting orbit .

Solution :

Now , when velocity is perpendicular to magnetic field radius of orbit is given by :

\(r=\sqrt{\dfrac{2VM_p}{eB^2}}\)

Putting all given values above :

\(r=\sqrt{\dfrac{2\times 6.44\times 10^8\times 1.67\times 10^{-27}}{1.6\times 10^{-19}\times 0.02^2}}\\\\r=183.33 \ m\)

Therefore , radius of orbit is 183.33 m .

Hence , this is the required solution .

Answer:

The gravitational acceleration of a planet of mass M and radius R

a = G*M/R^2.

In this case we have:

G = 6.67 x 10^-11 N (m/kg)^2

R = 2.32 x 10^7 m

M = 6.35 x 10^30 kg

Now we can compute:

a = (6.67*6.35/2.32^2)x10^(-11 + 30 - 2*7) m/s^2 = 786,907.32 m/s^2

The acceleration does not depend on the mass of the object.

The acceleration of the object is \(3.01*10^{-23}m/s^{2} \)

The gravitational acceleration of object is computed by formula shown below,

                   \(acceleration(a)=G\frac{m}{R^{2} } \)

Where G is gravitational constant, m is mass of object and R is radius of planet.

Given that,  \(G=6.67*10^{-11}Nm^{2}/Kg^{2} ,m=243Kg,R=2.32*10^{7} m\)

Substitute values in formula.

   \(a=6.67*10^{-11}*\frac{243}{(2.32*10^{7})^{2} } \\ \\ a=6.67*10^{-11}*4.51*10^{-13}\\ \\ a=3.01*10^{-23}m/s^{2} \)

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Answer:

There are little tiny batteries that are contained within the molecules of the food. The sun charges these batteries, and when the food is eaten, the energy from the batteries flows through the acids in the stomach, which gives the person or animal energy. In gasoline, the energy is created when the gasoline is set on fire and burned, there is no energy within it already. So they are different forms of energy. Hope this helps!

Answer:

the reason why u may experience shock is because. of friction. if you were to hold onto the body of the car there would be no shock because friction isnt present you are most likely to notice this on a warm day because friction mostly happens in those types of environments. heat rubbing together equals friction.