An object is moving across a surface, but it does not gain or lose speed. Which best describes the object's force?
O The net force is positive.
O The net force is zero.
The positive force is greater than the negative force.
O The negative force is greater than the positive force.
Mark this and retum
Save and Exit
Next
Submit

Answers

Answer 1

Answer:

The net force is positive

Explanation:

This would mean that altogether, the force would cause the object to always be going the same way, and if it is not gaining or losing speed, we can say the force has not changed and that the object has reached terminal velocity. It is not correct to say that the positive is greater than the negative as friction also causes some type of effect and it is neither positive nor negative


Related Questions

Raquel establece que la rapidez del sonido en el aire en un día es de 346 m/s . Días después hace la misma medición obteniendo una rapidez de 340 m/ s . ¿Cuál será la temperatura del aire en cada día?

Answers

Answer:

La ecuación para la velodiad del sonido en aire esta dada por:

[tex]v = \sqrt{ \frac{\gamma*R*T}{M} }[/tex]

Resolviendo esto para T, obtenemos:

[tex]T = v^2*(\frac{M}{\gamma*R} )[/tex]

donde:

T = temperatura del aire en grados Kelvin

γ = constante adiabatica = 1.4

R = constante del gas ideal =

M = masa molar del aire = 29*10^(-3) kg/mol

Si sabemos que el primer día la velocidad es 346 m/s, tenemos:

v = 346 m/s

Ahora podemos reemplazar todos esos valores en la ecuación para T, y asi obtener:

[tex]T = (346m/s)^2*(\frac{29*10^{-3}kg/mol}{1.4* 8.31 J/mol*K} ) = 298.42 K[/tex]

Para el segundo día la velocidad es 340 m/s, entonces ese día la temperatura va a ser:

[tex]T = (340m/s)^2*(\frac{29*10^{-3}kg/mol}{1.4* 8.31 J/mol*K} ) = 288.16 K[/tex]

Which of the following provides the best evidence in support of the big bang
theory?
O A. The way a balloon expands
B. The confirmation of special relativity
C. The uniformity of cosmic background radiation
D. The separation of energy levels in an atom

Answers

C. The Uniformity of Cosmic Background Radiation

weight of the body will be more in air water Milk or Mercury​

Answers

Answer:

Mercury is the answer..

Answer:

I believe mercury

Explanation:


A 105kg astronaut lands on the moon, with a weight of 170N. What is the acceleration due to gravity

Answers

Explanation:

given: m= 105kg,f=170N,a=?

F = m×a

a = f/m

a=170/105

therefore, a=1.62m/s^2

Give a general description of how winds form

Answers

Answer:

Wind comes from pressure and temperature differences.

Explanation:

Have you ever opened a window on a hot day to let a breeze in? What is happening is a rush of air to balance out temperatures. This goal for uniformity is why ice melts in a glass of warm coffee and air rushes out of a balloon.

Answer:

Wind forms when the sun heats one part of the atmosphere differently than another part. This causes expansion of warmer air, making less pressure where it is warm than where it is cooler. Air always moves from high pressure to lower pressure, and this movement of air is wind.

Explanation:

please give me answer​

Answers

1:B
2:B
3:10000 so I think that 10^3 or 10^4 (sorry)
4:B
5: I'm not sure but I think it's B

Hai vận động viên chạy trên cùng 1 đoạn đường, vận động
viên A chạy với vận tốc 12 m/s vận động viên B chạy với vận tốc 36
km/h. Hỏi vận động viên nào chạy nhanh hơn?

Answers

Answer:

Pemain A

Explanation:

Mengingat data berikut;

Kecepatan pemain A = 12 m/s

Kecepatan pemain B = 36 km/h

Untuk menentukan siapa pelari tercepat di antara dua pemain;

Pertama-tama, kita harus mengubah kecepatan menjadi satuan standar pengukuran yang sama.

Jadi, mari kita gunakan pengukuran umum meter per detik.

Konversi:

36 km/h = (36 * 1000)/(60 * 60)

36 km/h = 36000/3600

36 km/h = 10 m/s

Kecepatan pemain B = 10 m/s

Oleh karena itu, dibandingkan dengan kecepatan pemain A; pemain A lebih cepat.

tìm chỉ số của A1 và A2

Answers

Answer:

A1

Explanation:

What efforts are made to bring uniformity in measurement​

Answers

Answer: The use of S I Unit brings uniformity in measurements.

Explanation:

The S I unit is the international system of units which are used to express the magnitudes or quantities of important natural phenomena. It is used universally as a standard for measurements thereby creating an avenue for uniformity in measurements. The base units that makes up the SI unit are:

--> Length: this is measured in meters (m)

--> Time: this is measured in seconds (s)

--> Mass: this is measured in kilogram (kg)

--> Temperature: this is measured in Kelvin (k)

--> Electric current: this is measured in ampere (A).

--> Amount of substance: this is measured in mole

--> Luminous intensity: this is measured in candela (cd)

These units are used as the standard to make our judgement of measurement more reliable and accurate. And since there is only one basic unit for each quantity (example length which is measured in meters) there is no need for further conversions.

In the diagram, q1 = +4.88*10^-8 C.
What is the potential difference when
you go from point A to point B?
Include the correct sign, + or - .
B
0.538 m
1.36 m
91 |
(Hint: Does V go up or down when you go
from B to A?) (Unit = V)

Answers

Answer:

ΔV = 1139.3 V = 1.139 KV (+ve sign shows V goes up)

Explanation:

The potential difference while moving from point A to Point B is given as follows:

[tex]\Delta V = V_B-V_A[/tex]

where,

ΔV = potential difference from A to B = ?

[tex]V_A[/tex] = Potential at point A = [tex]\frac{kq}{r_A}[/tex]

[tex]V_B[/tex] = Potential at point B = [tex]\frac{kq}{r_B}[/tex]

Therefore,

[tex]\Delta V = \frac{kq}{r_B}-\frac{kq}{r_A}\\\\\Delta V = kq(\frac{1}{r_B}-\frac{1}{r_A})[/tex]

where,

k = Colomb's Constant = 9 x 10⁹ N.m²/C²

q = magnitude of charge = 4.88 x 10⁻⁸ C

[tex]r_A[/tex] = distance of point A from charge = 1.36 m

[tex]r_B[/tex] = distance of point B from charge = 0.538 m

Therefore,

[tex]\Delta V = (9\ x\ 10^9\ N.m^2/C^2)(4.88\ x\ 10^{-8}\ C)(\frac{1}{0.538\ m}-\frac{1}{1.36\ m})\\\\\Delta V = (439.2 N.m^2/C)(2.59\ /m)[/tex]

ΔV = 1139.3 V = 1.139 KV (+ve sign shows V goes up)

The answer is 492.87.

Correct on Acellus

The answer is D. I can't figure out why? The human range is from 20 Hz to 20 kHz...

Answers

Answer:

(C) 2 kHz

Explanation:

The normal hearing frequency range of a person has a minimum of about 20 Hz, which is the about the frequency of the lowest pipe organ pipe. The maximum frequency that a human can ear comfortably is 20 kHz

Therefore, the student will not be able to hear sounds less than 20 Hz, and sounds above 20 kHz and the student will only be able to hear the 2 kHz sound.

can u guys help me with this question.

State one example of the cause of a short circuit. Explain your answer​

Answers

Answer:

the positive and negative terminals of a battery are connected with a low resistance conductor.

research paper on tsunamis (4-5 paragraphs minimum) 3) Tsunamis how they work….evacuation routes, structures built in oceans to protect, early detection, etc

Expectations:

A. Must be at least 4 full paragraphs. (probably will need to be more)

B. Must have an introductory paragraph that explains what the problem is, and the general overview of the paper.

C. Must Define Problem, including details and how it relates to Irvine

D. Main Body of Paper (probably couple of paragraphs) This is where you will show what you found out in your research. Make sure to include things like current use/techniques, as well as what technological advancements are being researched to improve your specific topic/issue.

E. Conclusion: Short summary of main points. Your Opinion on what is working and why (or what is not working and why)

F. Citations: Must use at LEAST 3 sources. Must site works at end, in either MLA or APA format, AND must site them where used in the paper (also MLA or APA format).

Make sure all work is yours and original. Copying is cheating. Using information from a source without citing is plagiarism.

Answers

A must be at least 4 full paragraphs probably will need more

On the graph of voltage versus current, which line represents a 3.0 resistor

Answers

Answer:

C. Line A

Explanation:

V = A*R

12V = 4A*R

R = 12V/4A

R = 3ohms

How is the force useful to us? ​

Answers

Answer:

Force is useful to us because it changes or tries to change the positionof a body, it helps to change the direction of a moving object , it helps to change the speedof a moving body etc.

I hope this will help you

The use of force in our everyday life is very common. We use force to walk on the road, to lift the objects, to throw a cricket ball, or to move a given body by some particular speed or direction. We are very familiar with the various effects of force. We can exert pull and push.

A car moving round a circular rest of a car take 120/s to do a lap of 8/km what is the speed in kmlh

Answers

Answer:

speed = 240 kilometers per hour

Explanation:

so we know speed = distance over time

speed= 120s

distance= 8km

8km/120s=0.0666km/sec

0.0666km covered in 1 sec

3,600 seconds- 1km/hr

0.0666/1 times 3600= 239.76

239.76= 240km/hr

The acidity model given by pH = -log10[H+] where acidity (pH) is a measure of the hydrogen ion concentration [H+] (measured in moles of hydrogen per liter) of a solution. Using this model, determine the pH of a solution with a hydrogen ion concentration of 2.3 X 10^-5 (round your answer to the nearest hundredth)

Answers

Answer:

Hydrogen ion concentration, [H+] :

[tex]{ \bf{[H {}^{ + } ] = 2.3 \times {10}^{ - 5} \: mol \: l {}^{ - 1} }}[/tex]

Substitute to the negative logarithmic model:

[tex] = { \tt{ - log(2.3 \times {10}^{ - 5} ) }} \\ pH = 4.64[/tex]

Impulse can be defined as

The frequency at which something occurs

The change in velocity

The change in momentum from an force within the system

The change in momentum from a force outside of the system

Answers

Explanation:

The change in momentum from an force within the system.

I think its D. The change in momentum from a force outside of the system

Does anyone know the answer ? I forgot my calculator.


12 x sin50

Answers

12 × sin50 = 9.192533317........

Can the magnitude of a vector ever (a) be equal to one of its components, or (b) be less than one of its components? 9. Can a particle with constant speed be accelerating? What if it has constant velocity? ​

Answers

Answer:

a) the other components are zero, in the direction of one of the coordinate axes

b) the magnitude is less than the value of one of its components, it must occur when the vector is in some arbitrary direction

9) constant velocity the acceleration must necessarily be zero,

constant speed  can be accelerated since it may be changing the direction of the velocity vector

Explanation:

Vectors are quantities that have modulo (scalar) direction and sense.

a)  If in a vector its magnitude is equal to one d its components implies that the other components are zero, therefore the vector must be in the direction of one of the coordinate axes

b) if the magnitude is less than the value of one of its components, it must occur when the vector is in some arbitrary direction, other than the direction of the axes, that is

          R² = x² + y²

where R is the magnitude of the vector e x, and are the components

9) When a particle has a constant velocity, the acceleration must necessarily be zero,

         v = vo + a t

The bold letters indicate vectors If a = 0 implies that v = vo

If a particle has constant speed it can be accelerated since it may be changing the direction of the velocity vector, this type of acceleration has the name of centripetal acceleration

why our eyes donot feel cold ?​

Answers

Answer:

The corneal tissue at the front of the eye has high thermal conductivity so it doesn't stray too far from body temperature even when the ambient temperature is extreme. For example, if the environment is at -11°C, the surface temperature of a human cornea only falls to 28.6°C.

A student increased the resister of the voltmeter year not the circuit

Answers

Answer:

Say the full question I can't understand what it is

Si la experiencia de Torricelli se llevara a cabo al nivel del mar usando un aceite de 890
kg/m3
de densidad en lugar de mercurio, ¿cuál sería la altura que alcanzaría la columna de
aceite?

Answers

Answer:

La columna de aceite tendría una altura de 11,613 metros.

Explanation:

El modelo de Torricelli basa el cálculo de la presión atmosférica mediante el concepto de presión hidrostática, en donde la densidad del fluido ([tex]\rho[/tex]), en kilogramos por metro cúbico, es inversamente proporcional a la altura de la columna ([tex]h[/tex]), en metros, para una igual presión atmosférica ([tex]P[/tex]), en atmósferas. Entonces, podemos estimar la altura de la columna mediante el siguiente modelo:

[tex]\rho_{Hg}\cdot h_{Hg} = \rho_{o}\cdot h_{o}[/tex] (1)

Donde:

[tex]\rho_{Hg}[/tex] - Densidad del mercurio.

[tex]h_{Hg}[/tex] - Altura de la columna de mercurio.

[tex]\rho_{o}[/tex] - Densidad del aceite.

[tex]h_{o}[/tex] - Altura de la columna del aceite.

Si sabemos que [tex]\rho_{Hg} = 13600\,\frac{kg}{m^{3}}[/tex], [tex]h_{Hg} = 0,760\,m[/tex] y [tex]\rho_{o} = 890\,\frac{kg}{m^{3}}[/tex], entonces la altura de la columna del aceite es:

[tex]h_{o} = \left(\frac{\rho_{Hg}}{rho_{o}} \right)\cdot h_{Hg}[/tex]

[tex]h_{o} = \frac{13600\,\frac{kg}{m^{3}} }{890\,\frac{kg}{m^{3}} }\times (0,760\,m)[/tex]

[tex]h_{o} = 11,613\,m[/tex]

La columna de aceite tendría una altura de 11,613 metros.

Hey please could somebody write a speech that i could read out in front of my class about Charles Darwin and the Theory of Evolution. Thank you so much :D

Answers

Answer:

Charles Robert Drawin was an English naturalist,Geologist and Biologist, Best known for his contributions to the science of evolution. His proposition that all species of life have descended from common ancestors is now widely accepted and considered a fundamental concept in science!

Why are the shoes soles of fat people get worn out faster than those of thin people?

Answers

Less weight is why fat peoples souls wear out faster.

List out the fundamental and derived units​

Answers

Derived Units Table: The Table Shows the List of Derived Units
Quantity Formula SI Derived Unit
Force Mass x Acceleration
Work Energy Force x Displacement Power/Time Kg. m.s-2
Pressure, Stress Force/Area Kg.m-1.s-2
Current density J = I/A A.m-2

If Cl− is the only anion in the solution, what is the Cl− concentration in milliequivalents per liter?

Answers

Answer:

155mEq/L Cl-

Explanation:

A Ringer’s solution contains the following concentrations of cations: 146 mEq/L of Na+, 5 mEq/L of K+, and 4 mEq/L of Ca2+.

As Cl- is the only counterion of those cations:

For Na, the molecule is NaCl and the mEq/L of Cl- = mEq of Na+. The Cl- of the first ion is 146mEq/L Cl-

For K+, The molecule is KCl, mEq Cl- = 5mEq/L Cl-

And, for Ca2+, The molecule is CaCl2 but the equivalents of Ca2+ = Equivalents of Cl- = 4mEq/L Cl-

The total concentration of Cl- are:

146 + 5 + 4 =

155mEq/L Cl-

4. Interference is an example of which aspect of electromagnetic radiation?
A) Particle behavior
B) photon behavior
C) the photoelectric effect
D) wave behavior

Answers

Answer:

D is the answer wave behavior

Interference, refraction, diffraction, and dispersion are all aspects of wave behavior. (D).  That is, particles don't do these things.

If we go on the top of the Mountain we will our weight increase or decrease?​

Answers

Answer:

increase

Explanation:

guesshejwoowsnnsnakalalapqjhdjd

Answer:

our weight would decrease.

Explanation:

because of you burning all those calories and fat from hiking up the mountain.

Calculate the maximum absolute uncertainty for R if:

R = 9A / B
A = 32 +/- 2 seconds
B = 11 +/- 3 seconds

1 second


0.33 seconds


9 seconds


2 seconds


6 seconds

Answers

Answer:

ΔR = 9 s

Explanation:

To calculate the propagation of the uncertainty or absolute error, the variation with each parameter must be calculated and the but of the cases must be found, which is done by taking the absolute value

           

The given expression is      R = 2A / B

the uncertainty is                 ΔR = | [tex]\frac{dR}{dA}[/tex] | ΔA + | [tex]\frac{ dR}{dB}[/tex] | ΔB

we look for the derivatives

     [tex]\frac{dR}{dA}[/tex] = 9 / B

     [tex]\frac{dR}{dB}[/tex] = 9A ( [tex]- \frac{1}{B^2 }[/tex] )

we substitute

     ΔR = [tex]\frac{9}{B}[/tex]  ΔA + [tex]\frac{9A}{B^2}[/tex]  ΔB

the values ​​are

     ΔA = 2 s

     ΔB = 3 s

 

     ΔR = [tex]\frac{9}{11}[/tex]   2 + [tex]\frac{9 \ 32}{11^2 }[/tex]  3

     ΔR = 1.636 + 7.14

     ΔR = 8,776 s

the absolute error must be given with a significant figure

     ΔR = 9 s

Other Questions
examples of how chemical weathering may benefit people. HELP ASAP ILL GVE 30 PONTSW.E.B. DuBois starts his chapter opposing Booker T. Washington with this sentence:In failing thus to state plainly and unequivocally the legitimate demands of their people, even at the cost of opposing an honored leader, the thinking classes of American Negroes would shirk a heavy responsibility, -- a responsibility to themselves, a responsibility to the struggling masses, a responsibility to the darker races of men whose future depends so largely on this American experiment, but especially a responsibility to this nation, -- this common Fatherland.If DuBois considers himself part of the thinking classes of American Negroes, what does this sentence give him permission to do? Read the excerpt from "Music Gets Personal.Walking down the street, you still had to whistle, though. Old radios and record players were too big to carry. Radios had large tubes in them. Those tubes made the sound louder, but they were heavy. Parts of record players were made of iron. They were also too heavy to carry. Even if you could carry a record player, you couldnt play it. Record players work only when theyre still.Which details are included to explain the challenges of transporting music? Check all that apply.People enjoyed whistling.Radios were too big to carry.Radios contained heavy tubes.Some people could lift record players.Record players had to remain still to work. 10. Ms. Dell will help her grow up and understand the world. *A. up, andB. up andO C. correct as isSubmit The distance between points A(0,1) and B(x, 4) is p34. Find the x coordinate for point B. what is the slope of the line? please help Yesterday, the dollar was trading in the foreign exchange market at 1.10 euros per dollar. Today, the dollar is trading at 1.20 euros per dollar. The dollar has ________ and a possible reason for the change is ________ in the expected future exchange rate. Schistosoma becomes infectious to humans during which of the following stages? After cercariae migrate to the liver After the eggs are released in urine After it is released from the snail After mating of male and female worms Before the eggs hatchWhich of the following groups includes a protozoan that is transmitted sexually? Chromalveolata Excavata Amoebazoa Archaeplasteda RhizariaSchistosoma becomes infectious to humans during which of the following stages? After cercariae migrate to the liver After the eggs are released in urine After it is released from the snail After mating of male and female worms Before the eggs hatchWhich part of a mushroom would be eaten? Thallus Sporangium Mycelium Septum Hyphae which of the following measurements is equivalent to 5.461x10^-7m? If the angle is in standard position and P(x, y) is a point on the terminal side of , and r is the distance from the origin to P, then sin() = Incorrect: Your answer is incorrect. cos() = tan() = . A counterclaim is? A. a claim that includes a true statement. B. an argument made against a claim.C. an examination of a claim D. evidence used against a claim. 18) Mala gave Kamala half the number of sweets she had. She then had 7 sweets left. How many sweets did Mala have at the start? Which of the following was not a purpose of the propaganda campaign What is the value of the logarithm below? (Round your answer to two decimalplaces.)log4 12 8. Share 5 sweets between 2 friends.8 1 How many sweets did each one get?8.2 Were there any sweets left over? 12. Within the story, the author alludes to King Solomon and the Queen of Sheba. TheQueen of Sheba was known to be beautiful, intelligent, and very rich. King Solomonwas said to exceed all kings in riches and in wisdom. At one point the Queen ofSheba tested King Solomon's wisdom and, when he succeeded, she showered him ingifts. How do these allusions add to the development of the story? Use specificevidence from the text to support your answer. Clois what is the weight of a body in the earth, if its weig is 5Nin moon? When a bomb is suspected of being planted in a room, how is a search for the bomb generally conducted?by starting at one end of the room, fanning out, and then proceeding until reaching the other endby type of material: metal objects are inspected first, then plastic, then all othersby height, starting below hip level then working upward, sweeping around the room at each levelby dividing the room into quadrants, then sweeping one quadrant at a time this is just the second out of 25 questions. Get ready cuz my brain hurts Too little sleep is a risk factor for poor health, reduces a person's resistance to disease, andimpairs motor skills,TrueFalse