A billiard ball rolls from rest down a smooth ramp that is 8.0 m long. the acceleration of the ball is constant at 2.0?

Answers

Answer 1
Sbsbbsbsbsbb jsjshbsbd. Disbanded. En

Related Questions

I got stuck on this question ​

Answers

Answer it 2n

Explanation:

HELP PLZ
What would it mean if an object had no potential energy?

Answers

All of the potential energy has changed and is being used in a different form. For example all of the potential energy could’ve change to kinetic energy. :)

The current in the wires of a circuit is 180.0 milliAmps. If the
voltage impressed across the ends of the circuit was doubled
and the resistance was one-third the original value, then its
new current would be _____milliAmps.

Answers

Explanation:

ls xgfmc!hchlvb! jt?bjgchfb j

URGENT PLEASE HELP!!!! GIVING BRAINLIEST!! If you answer this correctly ill answer some of your questions you have posted! (30pts)

Answers

Answer:

5

Explanation:

From the attachement,

M.A =  Load(L)/Effort(E)

M.A = L/E...................... Equation 1

Where M.A = .Mechanical Advantage, L = Load, E = Effort.

Given: L = 500 N, E = 100 N

Substitute these values into equation 1

M.A = 500/100

M.A = 5.

Hence the actual mechanical advantage of the pulley is 5

Narcotics are highly addictive and affect the driver's
Oa) decision making
Ob) vision
Oc) motor skills
Od) all of the above

Answers

Answer:

D

that's should be the answer

Od) all of the above

The kinetic energy of a body moving at a speed of 10 m / s is equal to 1000 J. What is the body mass

Answers

Answer:

m = 20 kg

Explanation:

Given that,

The speed of a body, v = 10 m/s

Kinetic energy of the body, K = 1000 J

We need to find the mass of the body. The formula for the kinetic energy of a body is given by :

[tex]K=\dfrac{1}{2}mv^2\\\\m=\dfrac{2K}{v^2}\\\\m=\dfrac{2\times 1000}{(10)^2}\\\\m=20\ kg[/tex]

So, the mass of the body is equal to 20 kg.

How do the temperature curves in your graph show the range of temperature?

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Answer:

Step-by-step Explanation:

A sharpening wheel is traveling at 5 rad/s, it slows down to rest in 30 seconds while sharpening an axe. What is its angular acceleration?

Answers

Answer:

Angular acceleration [tex]= 0.167[/tex] rad/s^2

Explanation:

Given

Initial Angular velocity (w1) [tex]= 5[/tex] rad/s

Final Angular velocity (w2) [tex]= 0[/tex] rad/s

Time taken to change velocity from w1 to w2 [tex]= 30[/tex] seconds

Angular acceleration is equal to the change in angular velocity to the time taken for making thing change

Hence, Angular acceleration

[tex]\frac{w_2 -w_1}{t} \\\frac{5-0}{30}\\0.167[/tex]rad/s^2

With this pandemic, have you gained a new appreciation for your education

Answers

Answer

YESSS. my education went down hill since the pandemic :(

Explanation:

what is acceleration​

Answers

Answer: acceleration means the speed is changing, but not always. When an object moves in a circular path at a constant speed, it is still accelerating, because the direction of its velocity is changing.

Explanation:

Which two statements describe what happens in both nuclear fusion and
nuclear fission reactions?
A. Each nucleus formed has fewer protons than the original nucleus
had.
B. Nuclei with small masses combine to form nuclei with larger
masses.
C. Radiation is released from the nuclei that undergo a reaction.
D. A small amount of the mass in each nucleus that undergoes a
reaction is converted to energy.

Answers

Answer:

C. Radiation is released from the nuclei that undergo a reaction.

D. A small amount of the mass in each nucleus that undergoes a

reaction is converted to energy.

Two statements, that describe what happens in both nuclear fusion and nuclear fission reactions, are:

Radiation is released from the nuclei that undergo a reaction.A small amount of the mass in each nucleus that undergoes a reaction is converted to energy.

Hence, option (C) and (D) are correct.

What is nuclear reaction?

A nuclear reaction is a process in nuclear physics and nuclear chemistry where two nuclei or a nucleus and an outside subatomic particle meet to create one or more new nuclides. Consequently, at least one nuclide must change throughout a nuclear reaction.

Instead of being referred to as a nuclear reaction, the process is simply referred to as a sort of nuclear scattering if a nucleus interacts with another nucleus or particle and they subsequently separate without altering the nature of any nuclide.

Learn more about nuclear reaction here:

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A battery sends a current through a metal wire.
The current in a wire is 3.7 A.
Calculate the charge that flows into the wire in 13 s

Answers

Answer:

I hope this a little bit.

Do all force interactions cause a noticeable change in motion? Explain your thinking?
!THANK YOU!

Answers

Answer:

No. If you apply a force in a chair, for example, you only will be able to move the chair if you beat the static frictional force. So, with that example, we can see that is not any type of force that can produce movement. The only force that produces movement is a result force which is non-zero.

The answer would be no


Question 4 (1 point)
How far does a sound wave travel in 3 seconds if the air temperature is 30 degrees
Celsius?

a) 114.33 m
b) 1047 m
c) 1029 m
d) 116.33 m

Answers

Answer:

B

Explanation:

v=349m/s

d=vt

d=349*3

d=1047m

WHY 349??

Because, velocity of sound increases about 0.6 m/s for every 1 degree celsius rise in temp.

Velocity of sound is about 343 m/s at 20 degrees C, so 0.6*10=6 more m/s, or 349 m/s. Kinda cool how temperature alters the speed of sound!

URGENT PLEASE HELP!!!! GIVING BRAINLIEST!! If you answer this correctly ill answer some of your questions you have posted! (29pts)

Answers

Chemical=B

Mechanical=C

Nuclear=A

Electromagnetic=D

Thermal=E

I think these are right but if not I’m sorry

Hope I helped :]

Chemical-b
Mechanical-D
Nuclear-a
Electromagnetic-C
Thermal-E

A car weighs 11000 N on Earth. What is its mass?

A) 300 kg
B) 1122 kg
C) 0 kg
D) 107,800 kg

Answers

Weight is the measurement of the force of gravity, and it is mathematically defined as the mass of an object multiplied by gravitational acceleration: W = mg. On Earth, g is about 9.8 m/s². Rearranging the equation to find mass, m = W/g. Given our weight of 11000 N, the mass of the car would thus be m = 11000 N/9.8 m/s² = 1122 kg. So, the correct answer choice here would be B.

Does the earth have mass

Answers

Answer:

yes it does

Explanation:

it's not like Balloon it is a solid so it the earth does have a mass

A hair dryer is rated at 1.2kW. When it is plugged into a standard outlet and turned on, what is the current in the hair dryer?

Answers

Answer:

1200 watts at a standard 120v draws 10 amps

Are acceleration and force proportional or inversely proportional values?

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Answer:

Yes, acceleration and force are directly proportional to each other.

Explanation:

The force acting on an object is given by :

F = ma

Where

m is mass

a is acceleration

It can be clear from the above formula that the acceleration and the force are directly proportional to each other.

PLEASE HELP! WILL MARK BRAINLIEST!

Two kids are roller skating. Amy, with a mass of 55 kg, is traveling forward at 3 m/s. Jenny, who has a mass of 40 kg, is traveling in the opposite direction at 5 m/s. They crash into each other and hold onto each other so that they move as one mass. How fast are they traveling? How would you find your answer?

Answers

Answer:

They traveling at  along the direction of 55 kg kid.

Step-by-step explanation:

Conservation of momentum-

Momentum of a system is constant if there are no external forces acting on the system.

As they crash into each other and hold onto each other so that they move as one mass and no other force is acting on them, so conservation of momentum can be applied here.

The final direction of velocity will be opposite to the assumed direction of the mass of 40 kg.

This is a conservation of momentum problem. The equation relevant here is

[tex]\[m_1v_1+m_2v_2=\left ( m_1+m_2 \right )v_f\][/tex]

where m is the mass and v is the velocity. Because Amy and Jenny move as one mass after crashing (or colliding) with each other, this is an inelastic collision. What we to find is the final velocity, [tex]v_f[/tex], of both Amy and Jenny as a single body.

[tex]v_f=\frac{m_1v_1+m_2v_2}{\left ( m_1+m_2 \right )} = \frac{(55)(3)+(40)(5)}{(55+40)} = \text{3.84 m/s}.[/tex]

please help!

A proton moves perpendicularly to a magnetic field that has a magnitude of 4.20 x 10-2 T. What is the speed of the particle if the magnitude of the magnetic force on it is 2.40 x 10-14 N?​

Answers

Answer:

V=3.57 × 10^6 m/s

hope it is helpful..

The speed of the proton in the magnetic field is 3.57×10⁶ m/s.

To determine the speed of the proton, we need to know about the magnetic force experienced by a charged particle in a magnetic field.

What is the magnetic force on a charge particle in a magnetic field?From lorentz law, the magnetic force on a charge particle is given as

               F=q×v×B

  where, q= charge of the particle

              v= speed of the particle

              B= magnetic field

What will be the speed of the charge particle, proton, if the magnetic field and force are given?Magnetic force(F)= q×v×B

       v=F/(q×B)

Here, B= 4.20×10⁻²T

                  F=2.40×10⁻¹⁴N

                  q= 1.6×10⁻¹⁹C

       Then, v= 2.40×10⁻¹⁴/ ( 4.20×10⁻²× 1.6×10⁻¹⁹)

                   = 3.57×10⁶ m/s.

Thus, we can conclude that the speed of the proton in the magnetic field is 3.57×10⁶ m/s.

Learn more about the magnetic force here:

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Which is the correct definition for sea floor spreading

Answers

In sea-floor spreading, the sea floor spreads apart along both sides of a mid-ocean ridge as new crust is added.


In result, the ocean floors move like conveyor belts, carrying the continents along with them

If you have chance to rearrange the periodical table, what is the style of it?

Answers

if i had chance to rearrange thw periodical table i would arrange like this because it's not fair to change it it's a fact

How do vaccines provide immunity​

Answers

Answer:

Vaccines contain weakened or inactive parts of a particular organism (antigen) that triggers an immune response within the body. Newer vaccines contain the blueprint for producing antigens rather than the antigen itself.

Answer: They give  you a portion of the thing its fighting so it gets your cells use to it so they can fight it off easily

Explanation:

As a cold air mass advances on a warm air mass, what usually comes before it?​

Answers

Answer: A cold front occurs when a cold air mass advances into a region occupied by a warm air mass. If the boundary between the cold and warm air masses doesn't move, it is called a stationary front.

Explanation: Two types of occluded front exist: the warm-type and the cold-type. They’re distinguished by the relative temperatures of the air mass ahead of the occlusion – in other words, the air mass ahead of the original warm front – and the air mass behind the cold front. If the air behind the cold front is colder than the air ahead of the occlusion, it shoves beneath that air (because it’s denser) to form a cold-type occluded front. If the air behind the cold front is warmer than the air ahead, it rides over it to form a warm-type occluded front – which appears to be the more common case. In either situation, the lighter warm air representing the air mass originally between the warm and cold fronts sits above the boundary between the two cooler air masses.

Hope this helps!!

How much potential energy does a 4 kg object have that is 5 meters off the ground?
math pls help

Answers

Answer:
196 J
Explanation:
GPE= ham
GPE= (5)(9.8)(4)
GPE= 196 J

How would a weaker jet stream help to cause extreme flooding?(1 point)

Answers

Answer:

It would allow storm systems to stall in an area.

Answer: A weaker jet stream would allow storm systems to stall in one area.

someone help please !!

Answers

Answer:

c.

is the answer please brainliest

I’m pretty sure the first one is the correct answer

The brakes of a 2000 kg car apply a force of 250 N to slow down a car as it comes off of an exit ramp. What is the acceleration of the car?

Answers

that’s a very good question

In paragraph 3 and paragraph 24, what is meant by the phrase “designer babies”? A. Babies that are bred to be particularly attractive
B. Babies whose DNA has been altered to enhance a specific trait
C. Babies whose DNA has been altered to avoid disease
D. The biological children of genetic researchers

Answers

I think D but. It sure
Other Questions
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Sebastian will start off by lifting 40 pounds and will increase the weight he lifts by 10 pounds each week.Which of the following statements are true?OOOOOAndrew and Sebastian both increase the weight they lift each week by the same amountAndrew's training plan can be modeled by a linear function, and Sebastian's training plan can be modeled by an exponential function.Andrew's training plan can be modeled by an exponential function, and Sebastian's training plan can be modeled by a linear function.Andrew increases the weight he lifts each week by equal factors, and Sebastian increases the weight he lifts each week by equal differencesAndrew increases the weight he lifts each week by equal differences, and Sebastian increases the weight he lifts each week by equal factors A recipe for 12 scones requires 2 teaspoons of baking powder and 240 g of flour. If a larger number of scones are made, using 540 g of flour, how much baking powder is needed? What is the denotation of the word darkness?A) Being somewhere hauntedB) Being without light C) Being without fearD) Being somewhere mysterious Which of these is a compound-complex sentence?On the beach near my school, we built a gigantic sand castle.I bought a model car kit, and I built the model because I wanted to start a collection.Our school received a special award from the governor because we had perfect attendance.Some of the kids in my neighborhood wanted to work on community service projects. noticias recientes de mascotas Which of these shows the correct hierarchical sequence? How are organelles adapted for their functions R1 Homework EXTRA CREDITR.7-1.1A set of seven hockey sticks costs $196. What is the cost of one hockey stick? 5 4/5 +4 3/8 = what ??/// Abraham Lincolns Gettysburg address and Martin Luther King Jr.s I have a dream speech where are separated by 100 years how were the two similar Define currency and write down the specialities of currency A chemical reaction is shown.SnO2 + H2 Sn + H2OWhat is true about this chemical reaction? A. It is balanced because the mass of the reactants (number of atoms) is equal to the mass of the products (number of atoms). B. It is unbalanced because the mass of the reactants (number of atoms) is greater than the mass of the products (number of atoms). C. It is unbalanced because the mass of the reactants (number of atoms) is less than the mass of the products (number of atoms). D. It is balanced because the number of reactants (number of atoms) is equal to the number of products (number of atoms).Read the information about an experiment.Jadon plans on carrying out an experiment involving the burning of steel wool to illustrate the conservation of mass. Steel wool is made of iron. When it is burned it combines with oxygen to form iron(III) oxide.Which step in his experiment is the most important if he wants his experiment to correctly demonstrate the conservation of mass? A. The steel wool should be burned inside of a sealed jar or other closed system. B. The steel wool should be burned over a long period of time (at least two hours). C. The steel wool should be burned in a room that is at room temperature (2025C). D. The steel wool should be burned in its entirety sExpected Outcomes Metals in Hydrochloric AcidMetal ObservationsCopper No reaction even when gently heatedIron Little initial reaction.More vigorous reaction when heated.Positive test for hydrogen gas.Solution turned from colorless to yellow.Magnesium Vigorous initial reaction; rapid evolution of gas.Positive test for hydrogen gas.All of the magnesium seemed to disappear.Solution remained colorless.Zinc Initial reaction produced rapid evolution of gas; less vigorous than magnesium.All of the zinc seemed to disappear.Solution remained colorless.Students in Ms. Brown's Science Lab demonstrated several chemical reactions, by placing the each above chemicals in HCl (hydrochloric acid). Unfortunately, the data did not appear to support the Law of Conservation of Matter in any of the experiments. The recorded Mass of the Reactants did not match the Mass of the Products. Based on the expected outcomes listed in the table above, what might be a reason that their demonstrations were not successful? A. They only used metals B. They perfomed the experiment in a closed system C. The experiment was not performed in a closed system D. They didn't use enough HCl that no iron is left in its original state. 10. Who left the important contribution of the Ancient Greek author Herodotus? If the function s(x) represents a transformation of the graph that shifts the vertex of the graph to (7,1), which function represents s(x) How does the denominator of the sum, 1 5/12, compare to the denominators of the addends, 2/3 and 3/4? A trait that is helpful to a species will become more common in thatspecies over time. This is called what. A. genetic variationB. transitionC. overproductionD. selection