What term refers to alternating waves of contraction and relaxation of the digestive tract that propel food along the tract?.

Answers

Answer 1
Alternating contraction and relaxation of these muscles is called peristalsis. Peristaltic waves push the swallowed bolus down the esophagus. In the stomach, peristalsis churns swallowed food, mixing it with gastric juices. These mechanical and chemical actions further break down food into a substance called chyme.

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Related Questions

Two springs are attached to two hooks. When equal weights are suspended from each spring, both stretch the same amount. What can be assumed about the force constants of both?

Answers

It can be assumed that the spring constant will be same.Because the weight applied and the extension is same

What is spring force?

The force required to extend or compress a spring by some distance scales linearly with respect to that distance is known as the spring force. Its formula is

F = kx

Two springs are attached to two hooks. When equal weights are suspended from each spring, both stretch the same amount.

Extensions will be greater in spring B than in spring A.Remember that the force constant represents the spring's stiffness,

Hence It can be assumed that the spring constant will be same.Because the weight applied and the extension is same.

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Which phase of the moon occurs after a waxing gibbous?.

Answers

The Full Moon:
The next phase after the Waxing Gibbous is a primary one, the Full Moon. In this phase, the Moon is at its most massive and brighter point, as seen from the Earth. The Full Moon occurs when the Sun and the Moon are aligned on opposite sides of the Earth.

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You are generating traveling waves on a stretched string by wiggling one end. If you suddenly begin to wiggle more rapidly without appreciably affecting the tension, you will cause the waves to move down the string.

Answers

Answer:

At the same speed as before

Explanation:

Speed is dependent on the tension in the string, and since the tension isn't changing, the speed of the waves will also not change.

Throughout the reflection, make sure you have a copy of the student guide and your data tables. use the drop-down menus to complete the statements. the independent variable in part i, the one that is intentionally manipulated, is the . the independent variable in part ii, the one that is intentionally manipulated, is the . the independent variable in part iii, the one that is intentionally manipulated, is the . the independent variable in part iv, the one that is intentionally manipulated, is the .

Answers

The value of the dependent variable is based upon changes in the values of the independent variable.

What is dependent and independent variable?

The term independent variable has to do with the variable that is being intentionally manipulated in an experiment. The dependent variable is the variable that changes in value as the  independent variable is manipulated.

Now, the question is unclear however, we do know that in an experiment, the value of the dependent variable is based upon changes in the values of the independent variable.

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Answer:

The independent variable in Part I, the one that is intentionally manipulated, is the

✔ type of material

.

The independent variable in Part II, the one that is intentionally manipulated, is the

✔ charge of an object

.

The independent variable in Part III, the one that is intentionally manipulated, is the

✔ movement of a magnet

.

The independent variable in Part IV, the one that is intentionally manipulated, is the

✔ presence of an electric field

.

Explanation:

What is the speed of a wave that has a frequency of 250Hz and a Wavelength of 1.5 m?

Answers

Question :-

What is the Speed of a Wave that has a Frequency of 250 Hertz and a Wavelength of 1.5 meter ?

Answer :-

Speed of the Wave is 350 m/s .

Explanation :-

As per the provided information in the given question, we have been given that the Frequency of the Sound Wave is 250 Hertz. Its Wavelenght is given as 1.5 Meter. And, we have been asked to calculate the Speed of the Wave.

For calculating the Speed , we will use the Formula :-

[tex] \bigstar \: \: \boxed {\sf { \: Speed \: = \: Frequency \: \times \: Wavelenght \: }} [/tex]

Therefore , by Substituting the given values in the above Formula :-

[tex] \Longrightarrow \: \: \sf { \: Speed \: = \: Frequency \: \times \: Wavelenght }[/tex]

[tex] \Longrightarrow \: \: \sf { \: Speed \: = \: 250 \: \times \: 1.5 }[/tex]

[tex] \Longrightarrow \: \: \bf { \: Speed \: = \: 375 }[/tex]

Hence :-

Speed of the Wave = 375 m/s .

[tex] \underline {\rule {180pt}{4pt}} [/tex]

Speed = Frequency Wavelenght

Speed

Speed

Hence :

Speed of the Wave = 375 m/s.

=

250 x 1.5

375

What is the kinetic energy of a 38g soccer ball that is traveling at a speed of 80. m/s? Convert

Answers

Answer:

1.52 J

Explanation:

Kinetic energy formula

K.E. = 1/2mv²

Given

m = 38 g = 0.038 kg [kg is standard unit]v = 80 m/s

Solving

K.E. = 1/2 x 0.038 x 80K.E. = 40 x 0.038K.E. = 1.52 J

m=0.038kg

v=80m/s

Kinetic energy

1/2mv²1/2(0.038)(80)²6400(0.038)/23200(0.038)121.6J

A dart sketch and describe a potential energy diagram that represents the striking and burning of the match. Remember and label the diagram with the energy changes that occur. Parentheses you may do the sketch by hand or using a drawing program. Parentheses your answer must include potential energy diagram and a written description. Parentheses note you do not have to use actual energy values

Answers

Answer:

I love ur pfp! Ok here's a rough image of how a typical energy diagram works.  You give a little energy (A) and you get the potential that was in there all along.  Kinda like pushing a big rock off a cliff.  You do a little work then get a lot of energy out as the PE turns into other forms.  In a match it's heat and light

Is this correct?

Explanation:

A circuit connected to a battery of 1.9 voltage. has a current of 0.07 amps. What is the resistance
of the circuit

Answers

Answer:

27.14 ohms

Explanation:

V = IR

V/I  = R

1.9 v / .07 a = 27.14 ohms

In the rocket, what is the equal and opposite reaction?

Answers

Answer:

see below

Explanation:

Gases flying out at high velocity out the back  

  rocket flying forward

what is the force acting on an object with a mass of 150 kg starting from rest and traveling 15m/s in 250s?​

Answers

Answer:

9N

Explanation:

F = ma

F = 150kg × (15 - 0)m/s / 250s

F = 9N

What is an Astroid belt

Answers

The asteroid belt is a line int the space with light but more parts of the asteroid that broke down

is the amount of force acting on a given area.

Answers

Answer:

[tex]\huge\boxed{\sf Pressure}[/tex]

Explanation:

Pressure:

The amount of force acting on per unit area is called pressure.

Mathematical form:

[tex]P = \frac{F}{A}[/tex]

Unit:

The unit of pressure is N/m² or Pascal. Many other units are also used for pressure.

[tex]\rule[225]{225}{2}[/tex]

The first step in responding to any sports injury is to __________.
A.
remove the danger that lead to the injury
B.
ensure that the player's air way is not obstructed
C.
begin chest compressions for CPR
D.
ask the player to stop playing the sport


Please select the best answer from the choices provided.

A
B
C
D

Answers

Answer:

remove the danger that lead to injury

Explanation:

The best way is

spot the reason for injuryThen try best to remove that cause as fast as possible.Then spot the place of body where injury happenedNOW treat for that

Answer:

A

Explanation:

The first step in responding to an injury in sports is to remove the danger that led to the injuryB cannot be correct because if an athlete suffers a broken leg you don't check their air ways primarilyC is also not right as that is only when the player is unconsciousD is not right as that is the result of only a very life-threatening injuryA is the right answer

A 2000 kg car has a 40000 J of kinetic energy. How fast is it moving?

Answers

Answer:

6.32 m/s

Explanation:

KE = 1/2 m v^2

sqrt (2 * KE /m) = v = 6.32 m/s    

An astronaut is planning a trip to a newly-discovered planet. According to 2 points

the Law of Universal Gravitation, the astronaut's weight on the new planet

will be greater than his weight on Earth if:

-the new planet has less gravity than Earth.

-the new planet has the same gravity as Earth.

-the new planet has more gravity than Earth.

-the gravity of the planet doesn't matter.

-Weight is the same everywhere in the

universe.

Answers

Answer:

The new planet has more gravity

Explanation:

gravity force =  G m1 m2 / r^2

   decresing r  or increasing the planet mass will increase the force

Is the mass of an alpha particle greater than, less than, or equal to the mass of an electron?.

Answers

Alpha particles are 7300x heavier than electrons

The mass of an alpha particle greater than the mass of an electron. Hence option A is correct.

What is alpha particle ?

The alpha particle is a positively charged particle that is similar to the nucleus of the helium-4 atom and is spontaneously released by some radioactive substances. It is made up of two protons and two neutrons bonded together and has a mass of four units and a positive charge of two. Ernest Rutherford discovered and named alpha particles (1899), which he and colleagues employed in studies to examine the structure of atoms in thin metallic foils. This investigation produced in the original notion of the atom (1909-11) as a miniature planetary system with negatively charged particles (electrons) circling a positively charged nucleus. Later, in the first artificially created nuclear transmutation (1925), Patrick Blackett blasted nitrogen with alpha particles, converting it to oxygen.

Alpha particle is heavier than the electron cause alpha particle has 2 neutron and two protons which makes it heavier.

Hence option A is correct.

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What is the best way to arrange the magnets on the train and on the track so that the model train levitates?

Answers

Answer:

See below

Explanation:

So the magnets poles are opposed and the magnets REPEL each other

Which two factors are used to calculate the kinetic energy of an object?

Answers

Answer: Mass and velocity

K = 0.5*m*v^2

Explanation:

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Answer:

mass and velocity

Explanation:

Kinetic Energy = 1/2 * m * v^2          m= mass   v = velocity

Water shortages means.no no no links pls

Answers

Answer:

The lack of sufficient water resources, including a lack of access t safe water supplies, to meet water needs within a region.

Explanation:

Which sentence correctly uses a comma to separate coordinate adjectives?

Answers

Answer:

..

Explanation:

Coordinate adjectives are adjectives that describe the same noun equally. They should be separated with commas. In this sentence, both red and round are describing the ball. The correct answer is, "The red, round ball is Adley's favorite toy to play with."

Four identical particles of mass m are mounted at equal intervals on a thin rod of length l and mass m, with one mass at each end of the rod.

Answers

Answer:

Moment of inertia at distance L / 2    from center

I1 = M (L / 2)^2 = M L^2 / 4

I2 = M (L / 6)^2 = M L^2 / 36      at a distance of L / 6

I (1/2 rod) = I1 + I2 = M L^2 (1/4 + 1/36) = M L^2 (9 + 1)/ 36 = 5/ 18 M L^2

I for entire rod = 2 I (1/2 rod) = 5 / 9 M L^2

A 10 ohms, a 7 ohms and a 14 ohms resistor are connected in series with a 24 V battery. Calculate the equivalent resistance. Answer in units of ohms.​

Answers

Answer:

31ohms

Explanation:

in a series u add all the ohms together

HELP!

Explain how the conservation of energy and the conservation of matter might still be considered true when put together in spite of the ability of each to convert into the other.

Answers

Answer:

the conservation of both matters because without each other the balance of nature will be destroyed it helps in such a way that the food chain will be maintained.

it is as such considered because without matter there would be no energy and the reverse is such.

it is still considered because without one another famous atomic theories wouldn't have been made such as gas, liquid and solid.

in conclusion all these work together to balance the galaxy as a whole

Both the conservation of energy and the conservation of matter is important because, without each other, the natural equilibrium will be disrupted.

What is the law of conservation of energy?

According to the Law of conservation of energy. Energy can not be created nor be destroyed it can transfer from one to another form.

The total energy is the sum of all the energies present in the system. The potential energy in a system is due to its position in the system.

The conservation of both is important because without each other, the natural equilibrium will be disrupted, and it aids in the maintenance of the food chain.

It is seen as such because there would be no energy without matter and vice versa.

Hence both the conservation of energy and the conservation of matter is important

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what is the density of an object with mass of 60 g and a volume of 2cm3

Answers

Answer:

D=mass /volume

=60/0.002

=30000

What is the value of a in the function’s equation?

A.
3
B.
-2
C.
2
D.
-3

Answers

Answer:

Explanation:

What is the value of a in the function's equation?

A. -2

B. -3

C. 3

D. 2

ANSWER: c.

Read the scenario and social media post.

Damien is researching organic gardening, which avoids pesticides—chemicals used to kill harmful insects. While looking for sources, he runs across this social media post.

Answers

Answer:

No answer

Explanation:

Because there is no question

Answer:

C. Biased in favor of pesticides.

Explanation:

At the top of the arc of a pendulum the value of the _____ is zero. kinetic energy potential energy acceleration All of the above

Answers

At the top of the arc in a swinging pendulum the value of the kinetic energy is zero.

What is Kinetic energy?

This is defined as the energy possessed by a body virtue of its motion or movement.

When a pendulum swings, it possesses kinetic energy which is usually zero at the top of the arc after which it possesses potential energy as a result of the resting position.

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What are the assumptions on which the cosmological principle is based?.

Answers

homogeneity and isotropy, On large enough scales, the Universe looks pretty much the same in all directions. The big bang theory is based on two assumptions: the first is centered around Einstein's general theory of relativity, which accurately describes gravity and the interactions of matter; and the second, also known as the cosmological principle, asserts that the universe is homogeneous and isotropic on a large enough scale.

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9. If the magnitude of two vectors and their resultant are the same, what is the angle between the two vectors?​

Answers

The angle between the two vectors of the same magnitude would be 120 degrees to have the resultants the same.


answer: 120 degrees

Why burette calibrated from top to bottom?​

Answers

Answer:

In order to measure the amount of solution added in or drained out, the burette must be observed at eye level straight to the bottom of the meniscus. The liquid in the burette should be completely free of bubbles to ensure accurate measurements.

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