brainliest please help

tell me if am right
if not correct me


​please

Brainliest Please Helptell Me If Am Right If Not Correct Me Please

Answers

Answer 1

Answer:

See the answers below

Explanation:

To solve this problem we must use the following equation of kinematics.

[tex]v_{f}=v_{o}+a*t[/tex]

where:

Vf = final velocity [m/s]

Vo = initial velocity [m/s]

a = acceleration [m/s²]

t = time [s]

First case

Vf = 6 [m/s]

Vo = 2 [m/s]

t = 2 [s]

[tex]6=2+a*2\\4=2*a\\a=2[m/s^{2} ][/tex]

Second case

Vf = 25 [m/s]

Vo = 5 [m/s]

a = 2 [m/s²]

[tex]25=5+2*t\\t = 10 [s][/tex]

Third case

Vo =4 [m/s]

a = 10 [m/s²]

t = 2 [s]

[tex]v_{f}=4+10*2\\v_{f}=24 [m/s][/tex]

Fourth Case

Vf = final velocity [m/s]

Vo = initial velocity [m/s]

a = acceleration [m/s²]

t = time [s]

[tex]v_{f}=5+8*10\\v_{f}=85 [m/s][/tex]

Fifth case

Vf = final velocity [m/s]

Vo = initial velocity [m/s]

a = acceleration [m/s²]

t = time [s]

[tex]8=v_{o}+4*2\\v_{0}=8-8\\v_{o}=0[/tex]


Related Questions

Un prisma rectangular de cobre, de base igual a 36 centímetros cuadrados y una altura de 10 cm se sumerge hasta la mitad por medio de un alambre en un recipiente que contiene alcohol ¿que volumen de alcohol desaloja?

Answers

La respuesta correcta es 180 centímetros cúbicos o 180 [tex]cm^{3}[/tex]

Explicación:

El primer paso para saber cuanto alcohol desaloja el prisma es calcular el volumen total del prisma. El volumen se puede encontrar usando la formula V (Volumen) = B (base) x h (altura). El proceso se muestra a continuación:

V  = B x h

V = 36 [tex]cm^{2}[/tex] x 10 cm

V= 360 [tex]cm^{3}[/tex]

Finalmente, el volumen total del prisma debe dividirse en 2 considerando que solo la mitad del prisma fue sumergida y esta mitad equivale al volumen del alcohol desplazado.

360 [tex]cm^{3}[/tex] ÷ 2 = 180 [tex]cm^{3}[/tex]  

El volumen de fluido desplazado es de 180 cm^3.

Sabemos que el objeto va a desplazar su propio volumen de fluido. Por lo tanto, necesitamos obtener el volumen del objeto a, este es el volumen del fluido que eventualmente será desplazado por el sólido.

El volumen del sólido es;

V = 36 cm^2 * 10 cm^2 = 360 cm^3

desde que se sumergió a la mitad, volumen de alcohol desplazado = 360 cm^3/2 = 180cm^3

Obtenga más información sobre el volumen: https://brainly.com/question/7932885


can somone pls help me??!! i’m very stuck

Answers

Answer:

R

Explanation:

Her distance from home and Time increase

the stops when she gets to the library

then her distance from home decreases while her time increases

find the distance traveled in km when the average speed is 60 km per hour and the time taken is 3 and 1/2 hours​

Answers

Answer:

210 km

Explanation:

60 x 3  1/2 = 210

a race car is travelling at +76m/s when it slows down at -9m/s2 for 4 seconds. whats his new velocity?

Answers

Answer:

40 m/s. 1) Bumble bee jumps straight upwards with a velocity of 14.0 m/s. What is his displacement of after 1.80 s

A :-) for this question we should apply
v = u + at
Given - u = 76 m/s
v = ?
a = - 9 m/s^2
t = 4 sec
Solution -
v = u + at
v = 76 + ( -9 ) x 4
v = 76 - 9 x 4
v = 76 - 36
v = 40 m/s

.:. The new velocity is 40 m/s

Which of the following has the greatest mass?
A. star
B. moon
C. planet
D.galaxy

Answers

Answer: I think the answer is d

Explanation: sry if wrong

state three ways of conserving energy​

Answers

energy drinks

sitting

watching TV

Answer:

use natural lights

turn off electrical appliances..if not in use

check your wires every next Month

A hot air balloon is acted on by two forces. One force is its weight, equal to

2448 newtons. The second force is a buoyant force acting straight up,

equal to 2448 newtons. What change in the motion of the balloon will

result from the action of these two forces?

no change

rising

falling

Answers

Answer:

no change

Explanation:

The Newton's Second Law of motion states that when an unbalanced force is applied to an object, it causes an accelerated motion in the object, in the direction of the unbalanced force. So, if there is no unbalanced force, then there is no motion. In this case both the forces have same magnitude and opposite direction. Therefore, the unbalanced force will be zero:

Unbalanced Force = Upthrust - Weight

Unbalanced Force = 2448 N - 2448 N

Unbalanced Force = 0 N

hence, there will be no motion in the vertical direction. Therefore, the correct option is:

no change

the weight of a body floating in a liquid is​

Answers

Answer:

The apparent weight is the weight of the body minus the weight of the liquid displaced. The body will float only when both the weights are same. In this case, the given body of weight W is floating and hence the apparent weight is zero.

Answer:

Zero

Explanation:

The apparent weight is the weight of the body minus the weight of the liquid displaced. The body will float only when both the weights are same. In this case, the given body of weight W is floating and hence the apparent weight is zero.

at what angle work done is equal to zero​

Answers

Answer:

work done=0 when angel between 2 objects is 90 degree

1. Which of the following is a unique feature of light waves?

Answers

Answer: they are compression waves

Explanation:

The unique property of light waves is that they do not require a medium for propagation.

Generally; waves are classified into electromagnetic waves and mechanical waves. Mechanical waves require a medium of propagation while electromagnetic waves do not require a medium for propagation.

Also, waves are classified into transverse waves and longitudinal waves. In transverse waves, the disturbance is perpendicular to the wave front while in longitudinal or compressional waves, the disturbance is parallel to the wave front.

Light is both an electromagnetic wave and a transverse wave. This means that it requires no material medium for propagation. This is the unique property of light waves.

Learn more: https://brainly.com/question/2673886

Dorji weight 1500n.if the total surface area of soles of his feet is 0.5 m2 what is the pressure exerted by his body on the ground​

Answers

Answer:

P = 3000 Pa

Explanation:

Weight of Dorji, W = F = mg = 1500 N

The total surface area of soles of his feet is 0.5 m²

We need to find the pressure exerted by his body on the ground​. The pressure is equal to the force acting per unit area. So,

[tex]P=\dfrac{1500\ N}{0.5\ m^2}\\\\=3000\ Pa[/tex]

So, the pressure exerted by his body on the ground​ is 3000 Pa.

You fire a paintball from a paintball gun straight up into the air at 25.0 m/s. What is the ball velocity at the higher point that the ball reaches? Pleaseee helppp mee

Answers

Given :

You fire a paintball from a paintball gun straight up into the air at 25.0 m/s.

To Find :

What is the ball velocity at the higher point that the ball reaches.

Solution :

We know, when ball is moving upward acceleration due to gravity is applied downward.

So, the ball will decelerate and when ball reaches maximum height its velocity will become zero.

Therefore, ball velocity is 0 m/s at maximum height.

Hence, this is the required solution.

brainliest please help opposite 8n is 5n it could not come full picture

find the resultant force ​

Answers

Answer:

resultant force=16N→(TOWARDS THE DIRECTION OF 8N)

Explanation:

resultant force=8N+13N-5N

                        =16N→(TOWARDS THE DIRECTION OF 8N)


What important example, shown in the picture, is given regarding a real-life
connection to these elements?

Answers

Answer:

Explanation:

There is no picture!

An object moves along the grid through the points A, B, C, D, E, and Fas shown below.

Find the distance covered by the moving object.

The object moves 3 km to the East, turns North for 1 km, turns west for 1.5 km, moves

north 0.5 km, and finally turns east for 0.5 km.

Answers

Answer:

Total distance = 6.5 km

Explanation:

Let the distance be denoted by the vectors drawn from A, B, C, D, E, and F.

Then the distance covered can be calculated by adding the vectors in the direction given.

Total distance = 3km + 1km+ 1.5km+ 0.5km+ 0.5km

Total distance = 6.5 km

If we were to find the displacement ( shortest distance) then the head to tail rule would be applied using the vectors.

high heels shoes are more likely to damage floor than flat shoes . do you agree? explain.​

Answers

yesssss I am agree ......

Answer:

Yes, I agree. The pressure exerted upon the floor is larger for high heel shoes than flat shoes, hence causing more damage to the floor.

Explanation:

Pressure is force/area. High heel shoes have a sharp point at which they touch the floor, while flat shoes have a flatter surface at which they touch the floor. Due to you exerting the same force anyway, the area is smaller for high heel shoes.

As you might know, the smaller a denominator is, the larger the number is. As an example, 3/1 is larger than 3/2. 3/1 is 3, and 3/2 is 1.5. Hence, the force is larger for high heel shoes, and it will cause more damage.

Hope this helped!

An apple and a stone dropped from certain height accelerates:Required to answer. Single choice.Immersive Reader
(1 Point)
equally.
differently.
depending on density.
depending on the position of the sun.

Answers

An apple and a stone dropped together from any height accelerate equally.

A balloon is launched at 2.5 m every second, how far did it travel in 10 seconds?

Answers

Answer:

25 meters

Explanation:

1 sec is 2.5, 1x10 so 2.5x10=25

what was the temperature changes in Celsius degrees if it is
changed from 44°F to -56°F?

Answers

Answer:

so, the answer is 56 whole number if round it, or 55.6(round it to 10th decimal)

Explanation:

(formula, idk it is wrong or right)   °C =°F - 32 then / 1.8000

44°F =  6.6666666667°C

-56°F = -48.888888889°C

So, if u want whole number as the answer

it is something like 6.6666666667°C +  48.888888889°C = 55.5555555557 °C

so, so, the answer is 56 whole number if round it, or 55.6(round it to 10th decimal)

Question 4 (point)
What is the charge of the nucleus for the atom below?
O a
varies
Positive
Oc
Od
Neutral
Negative

Answers

Answer:

Positive

Explanation:

Tbh I dont have an explanation I just wanted to give the answer but its for sure correct!

Which situation provides the best evidence that a chemical reaction is taking place?


Help please !!!!

Answers

Answer:

A new product is formed

Explanation:

Physical reactions generally result in a change of state (solid, liquid, gas). Chemical reactions generally result in the production of a new product/ substance (structure/ properties are different than the intial reactants'... example= burning wood)

If the x and y vector components of Vector A are 11 and 7,
what is the magnitude of Vector A? Round your answer to the
nearest hundredth.

Answers

Answer:

R=13.04

Explanation:

Using pythagoras theorem

Assuming the vector A is the resultant force R

R^2=11^2+7^2

R^2=121+49

R^2=170

R=13.038

R=13.04

Why is the astronomical unit used to measure distances in the solar system?

Answers

Answer:Astronomers often use the astronomical unit to describe distances within solar systems because it is convenient and easier to understand. The astronomical unit (au or AU) is defined as exactly 149,597,870,700 meters (about 93 million mi), which is roughly equal to the average distance between the Sun and Earth.

Explanation: google

How much net force is needed to accelerate a 200 kg satellite 9.8 m/s2 ?

Answers

Answer:

1960 N

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 200 × 9.8

We have the final answer as

1960 N

Hope this helps you

A bike is traveling to the left with a speed of 27\,\dfrac{\text m}{\text s}27 s m ​ 27, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction when the rider slams on the brakes. The bike skids for 41.5\,\text m41.5m41, point, 5, start text, m, end text with constant acceleration before it comes to a stop.

Answers

Answer:

Explanation:

Given

Speed v =27m/s

Distance covered after skidding = 41.5m

Acceleration a = ?

Using the equation of motion

v² =u²+2aS

27² = 0²+2a(41.5)

729 = 0+83a

a = 729/83

a = 8.78m/s²

Hence it's acceleration is 8.78m/s²

PLEASE HELP ASAP I WILL GIVE BRAINLIEST!!

Answers

Answer:

Q1: I'm going to say the fence is a polarizing filter.

Q2: On the second question: (b). BTW, It's not a very well-phrased question (and I'm a particle physicist, so...)

Explanation:

Q1:

So... hard to say for sure the intent here without knowing what you've been learning in class, but a frisbee - being a flat disk - will only go through the fence if it is oriented as shown, much like polarized light will only go through a polarizing filter if the EM waves are polarized in the direction that they will pass through a polarizing filter.

Q2:

It's not a) because ALL waves require a source of energy.  

b) is for sure true and is about energy transfer - mechanical waves need a medium (like water) but EM waves do not. (Early on they thought maybe there was a medium for EM waves... they called it "aether" ... but it was proven via the Michealson-Morley experiment that no the speed of light was an absolute constant - fundamental to special relatively - which meant that light did not travel in any medium!)

(c) - depends on what you mean by "vibration", but yeah... EM waves result in varying electric fields for an observer. However, nothing to do with energy transfer per se (except that those varying fields are what transfer energy to objects that experience them...)

(d) - As above, the speed of light is a constant - cannot change speed ever *in a vacuum*.  However, the speed of light is different in various materials, and can be bent (refracted) or reflected, which means the fields change direction in interacting with matter, although they do not change speed or direction "on their own" (in a vacuum).  Similarly, mechanical waves can change speed or direction when there are changes or discontinuities in the media they travel in.  So, arguably about energy transfer (the direction and speed related to the direction and rate of energy transfer) but not really different between EM and mechanical waves.

Anyway, like I said, it's not a very clear question, so YMMV with my advice here, but (b) is for sure the best single choice.

Which of the examples below is an example of convection?
A)
rubbing your hands together.
B)
heating a fish tank.
basking in the sun.
D)
striking a match.

Answers

basking in the sun :)

A merry go round at the park is spinning. You stand on the outer edge and are traveling at constant speed of 5 m/s. You walk halfway toward the center. What happened to your acceleration?

Answers

Answer:

a' = 2a

Explanation:

The acceleration during this circular motion is the centripetal acceleration. Initially, the acceleration will be given as:

a = v²/r   --------------------- equation (1)

Where,

a = centripetal acceleration at outer edge

v = speed of merry go round = 5 m/s

r = distance from center of round to person (outer edge)

Now, when the person moves half way towards center. Then, the acceleration becomes:

a' = v²/r'

where,

r' = r/2

Therefore,

a' = v²/(r/2)

a' = 2v²/r

using equation (1):

a' = 2a

PLEASE HELP ASAP
describe how the equations for gravitational force and electrostatic force are similar

Answers

they are both forces ?

help!


Jerome solves a problem using the law of conservation of momentum. What should

Jerome always keep constant for each object after the objects collide and bounce apart?


velocity

mass

momentum

direction

Answers

Answer:

What shouldJerome always keep constant for each object after the objects collide and bounce apart? That would be Mass.

Answer:

B: Mass

Explanation:

Other Questions
Mary Grossman has been selling cupcakes for the past few years. She keeps meticulous record of every cupcake that she has ever made and sold. She has also kept records of customers comments on all her cupcakes. These have been entered into a computerized accounting information system that her accountant refers to as a "data warehouse." Mary is considering rebranding her cupcake business and has asked her accountant to identify the top-selling cupcakes for the past few years. Mary wants her accountant to engage in:______. y=3/8x4 Write the equation in standard form. What is the interquartile range? It increases, f = ma both mass and acceleration are directly proportional to force so if mass is constant acceleration must increase to increase the force. Question 7 of 20Daniel works at an electronics store and a customer walks in. The customerlooks around but doesn't seem interested in any one thing. Whatinterpersonal skill should Daniel use to make a sale?A. FlexibilityB. ProactivityC. AloofnessO D. Positivity The rms speed of the molecules of a gas at 145C is 187 m/s. Calculate the mass m of a single molecule in the gas. Martin had 12 songs on his MP3 player. He was able to buy more songs, and he now has 3 13 as many songs. How many songs does Martin have?Martin estimated the product to be 36.12 3 = 36How does his estimate compare to the actual product?Its a good estimate. The actual product is 35.Its a good estimate. The actual product is 40.Its a bad estimate. The actual product is 60.Its a bad estimate. The actual product is 120. You have a cake that is 10 inches in diameter. You expect 12 people to share it, so you cut it into 12 equal slices. Before you get a chance to serve the cake, 12 more people arrive! So, you decide to cut a concentric circle in the cake so that you will have 24 pieces. How far from the center of the cake should the circle cut be made so that all 24 people get the same amount of cake? In a class full of men and women, 5/9 of the class are women. What is the ratio of men towomen in its simplest form? PLS HELP MEsimplify 4/9+3/7 Two numbers have a sum of 136 and a difference of 32. Find the smaller of the two numbers. 180 in the ratio 1:3:4 Which conclusion is supported by the statement,"Hearing her reply, I was once more reminded what anadmirable mistress I served"?O The emperor enjoyed music.O The author valued her time at the palace.O Members of the court had ladies-in-waiting.O Instruments in the palace were given names. Fill in the blanks with the appropriate form of the verbsentirse.1. Tbien.2. Ellosenfermos3. Yocontento4. Nosotrosmal.5. Mi amigo Simnenojado. You want to create a map that shows all of the rivers and mountains in your state. What type of map should you create?politicalPHYSICAL---- IS THE ANSWERchoroplethspecial purpose Which angles are congruent? hard question plz help Help plzzzzzzzz :(Solve for C.c/18= 30/12 3 pounds of peanuts for 7.50 how much per pound? HELP I NEED TO TURN THIS IN IN 7 HOURS What was another name for Mesopotamia? *The answer are A.Timbuktu-quando B.fertile crescent C.IrkutskD.absynnian