An object is moving to the right at a constant velocity. What will happen if a
force of 20 N starts acting on it in the opposite direction?
А The object's velocity will increase.
B
The object's velocity will decrease.
с
The object will come to a stop.
D
The object will move at the same velocity.

Answers

Answer 1
B. Is correct answer

Related Questions

A 55 kg boy is riding a skateboard at a speed of 1.0 m/s. What is his
kinetic energy?

Answers

Answer:

27.5

Explanation:

KE=1/2m(v)^2

A washing machine spin dries clothes. It starts spinning at 20 rad/s and slows down to 8 rad/s while turning through 500 revolutions.
a. What is the angular acceleration?
b. How much time does it take to slow down?

Answers

Answer:

i do not know man

Explanation:

lol

The angular acceleration of the washing machine spin is 53.5 x 10⁻³.

What is meant by angular acceleration ?

Angular acceleration is defined as the time rate of change of angular velocity in a circular motion.

Here,

Initial angular velocity, ω₁ = 20 rad/s

Final angular velocity, ω₂ = 8 rad/s

Angular displacement, θ = 2[tex]\pi[/tex] x no. of revolutions

θ = 2[tex]\pi[/tex] x 500 = 1000[tex]\pi[/tex]

a) Using the equation of circular motion,

ω₂² - ω₁² = 2αθ

Therefore, the angular acceleration,

α = (ω₂² - ω₁²)/2θ

α = (20² - 8²)/2 x 1000[tex]\pi[/tex]

α = 53.5 x 10⁻³ rad/s²

b) Time taken by the machine spin to slow down,

t = (ω₂ - ω₁)/α

t = (20 - 8)/53.5 x 10⁻³

t = 224.2 s

Hence,

a) The angular acceleration of the washing machine spin is 53.5 x 10⁻³.

b) Time taken by the washing machine spin to slow down is 224.2 s.

To learn more about angular acceleration, click:

https://brainly.com/question/30237820

#SPJ3

Why does the first row in our periodic table
only have two elements?

A) because each orbital in every sub-level only holds
two electrons

B) because Bohr only knew about two elements

C) because the first energy level only holds two
electrons total
Help me plssss

Answers

Answer:

B

Explanation:

♡ ∩_∩

(„• ֊ •„)♡

┏━∪∪━━━━┓

   Hopes this helps

 ♡ good luck 。 ♡

┗━━━━━━━┛

Answer:

C option is correct

Explanation:

C) because the first energy level only holds two electrons.

How do you get on the cheer squad?!

Answers

Answer:

you don't cuz cheerleaders only get in the way of the football game

A rocket sled accelerates forward from 10 m/s to 50 m/s in 2 seconds. What is the acceleration of the sled?​

Answers

Answer:

Explanation:

Use kinematics equations

You have Vi=10m/s and Vf=50m/s and t=2s

Use equation Vf=Vo+at      50=10+a(2)

50=10+2a

40=2a

a=20 m/s^2

There is a small hole of radius r in a hollow sphere, which is immersed in a liquid. Upto what maximum depth it can be immersed so that liquid may not enter in it? Density of liquid is d and surface tension is T.

Answers

Answer:

h = 4T/dgr

Explanation:

Using Laplace law for spherical bubble, the pressure difference P'- P = 4T/r where T = surface tension and r = radius of sphere.

Now, the pressure difference on the hollow sphere P' - P = dgh where d = density of liquid, g = acceleration due to gravity and h = maximum depth to which sphere must be immersed.  

So dgh = 4T/r

h = 4T/dgr

Car A is stopped at a traffic light. At the moment it starts to move again, it is situated 330 m from car B, which is traveling in the opposite direction at a constant velocity of 18.0 m/s. If car A accelerates at a rate of 3.0 m/s^2, where and after how long will the two cars pass each
other?​
Please answer this question with steps..​

Answers

Answer:

hopr

Explanation:

Answer:

How do u delete your questions on this app

HELPPPP WILL MARK B IF CORRECT!!!!

Answers

If freckles is the dominant trait, this means every one of the genes with an upper case have freckles. This gives us:

3/4 of the offspring will have freckles. You can also say 75%

Hope this helps!! :)

A weight-lifter raises a 2000 N weight through a vertical height of 2.0m in 0.80 s.
What useful power does he develop in doing this?
A
800 W
B
3200W
с
4000 W
D
5000W

Answers

Answer:

D. 5000W

Explanation:

Given the following data;

Force = 2000N

Distance = 2m

Time = 0.8s

To find the power;

First of all, we would determine the workdone by the weightlifter

Workdone = force * distance

Workdone = 2000 * 2

Workdone = 4000N

Now, we can find the power using the formula;

Power = workdone/time

Substituting into the equation, we have

Power = 4000/0.8

Power = 5000 Watts

is a rare disorder that includes the inability to feel pain.
A. Somatoform pain disorder
B. Congenital analgesia
C. Kinesthesis
D. Anesthesia
Please select the best answer from the choices provided
Ο Ο Ο
B.
D

Answers

The rare disorder that includes the inability to feel pain is called Congenital analgesia. That is option B.

What is Congenital analgesia?

Congenital analgesia is defined as ,the name implies, a genetic disorder that rarely occurs which makes one not to be able to feel pain.

It is an autosomal recessive disorder in which there is genetic changes in the PMRD12 gene.

Therefore, the rare disorder that includes the inability to feel pain is called Congenital analgesia.

Learn more about pain here:

https://brainly.com/question/25753221

#SPJ1

Elements with positive valences usually ______ electrons
A. Donate
B. Accept
C. Have no
D. Create

Answers

The answer is donate, therefore elements with positive valences usually donate electrons

Skyscrapers are made of concrete and glass, concrete and glass are made of sand,so that makes skyscrapers giant sandcastles. Change my mind

Answers

Awnswer:

what are the answer chosices

Explanation:

Your a genius this make so much sense

A book is sitting on a table. Which of the following is true about the table? O A. It is pushing up on the book. O B. It exerts no force on the book at all. O C. It is pulling down on the book. D. It can affect the mass of the book.​

Answers

Answer:

yes it does exert a force, it pushes it up

Explanation:

this is called normal force

if it didn't exert a force the book would keep going down

according to newton every force has an equal amd opposite reaction

so the book exerts a force on the table and vice versa

hope this helped

Help me on this question

Answers

Adjust the height of the wooden rod so that it just touches the surface of the water. Switch on the lamp and motor and adjust the speed of the motor until low frequency waves can be clearly observed... Count the number of waves passing a point in ten seconds then Divide by ten to record frequency.

How much work did he do if he traveled 20 meters?

Answers

A lot sndndnsndndndndnndndndnd

Please help me with this

Answers

I can’t see the full pic

Answer:

I can't really see it sorry

difference between sold and liquid​

Answers

Explanation:

Solids have closely packed particles and vibrate about a fixed position, they also have a fixed volume.

liquid have close particles but which are able to move with a bit of kinetic energy, for this reason they have no fixed volume but take the volume of the container or vessel

A mass sitting on a horizontal, frictional surface is attached to one end of a spring; the other end is fixed to a wall. 3.0 J of
work is required to compress the spring by 0.20 m. If the mass is released from rest with the spring compressed, it
compresses a maximum acceleration of 15 m/s?.

a) Determine the spring constant.
b) Determine the mass.
d) What is the velocity when the mass reaches maximum acceleration?
c) Deterinine the net force when the mass passes 0.10m compression
d) Determine the acceleration when the mass passes 0.10m compression.
e) Determine the velocity when the mass passes 0.10m compression

Answers

Answer:

I started answering this before everything was erases, but briefly

W = 1/2 K x^2     so K = 2 W / x^2 = 6 * 25 = 150

Also F = - K X = 150 * 1/5 = 30 N at max extension

m = F / a = 30 /15 = 2 kg

Since max extension occurs at t = 0 you can write

x = A sin ω t

v = ω A cos ω t

a = -ω^2 A sin ω t            note that there is no phase angle here

Also at .1 compression

.1 = .2 sin ω t     and sin ω t = 1/2    and ω t = 30 deg = pi / 6

Substiture these values above to get velocity and acceleration when

ω t = 30 deg

rock at the edge of a cliff has kinetic energy because of its position.
True
False

Answers

its false rock is at edge

What is the limiting factor of speed for an object falling through the air?

Answers

Air Resistance is the factor, which limits the speed of an object falling through the air...⭐

____________________________________________________

<Judge It Yourself...>

Hope it helps you! ヅ

✪ Be Brainly ✪

An ohm is best described as a unit of measure for...



A. electrical resistance


B. electrical current


C. electrical potential difference


D. magnetic field strength

Answers

The answears is b :))

HELP PLEASE

44. Two wave pulses are traveling along a string
toward each other as represented in the diagram
below.

(D is interference)

Answers

The phenomenon of interference occurs when two wave pulses are traveling along a string toward each other. Option D is correct.

What is the interference of waves?

The result of two or more wave trains flowing in opposite directions on a crossing or coinciding pathways. This phenomenon is known as the interference of waves.

The effect is the sum of the individual wave amplitudes at each site where more than one wave is present.

When two wave pulses are traveling along a string toward each other. They meet and the phenomenon is occur known as interference.

Hence the phenomenon of interference occurs when two wave pulses are traveling along a string toward each other.

To learn more about the interference of waves refer to the link;

https://brainly.com/question/16098226

Each bat can produce different frequencies of ultrasound. Explain why this is useful if there are many bats hunting together.

Answers

Answer: Although low frequency sound travels further than high-frequency sound, calls at higher frequencies give the bats more detailed information--such as size, range, position, speed and direction of a prey's flight. Thus, these sounds are used more often.

Explanation:

The Berlin marathon is one of the fastest marathons courses; many world records have been set there. In 2014 Dennis Kimetto ran the 42.195 km in 2 hours, 2 minutes and 5 seconds. what was his average speed?

Answers

Answer:

about 2000 klm per min

Explanation:

what is Schwartzchild radius??
no copied answers plz

Answers

Answer:

Schwarzschild radius is the radius of the boundary of a hole of this type.

Help please!!! Physics circular motion

Answers

Answer:

2. 3.1415 m/s

3. 0.63m

4. 0.006 m/s^2

Explanation:

2. v=(2*pi*r))/T, put in values and solve.

3. Circumference=2*pi*radius, radius is 0.1m, plug in and solve.

4. a=(v^2)/r, (don't worry about converting to meters, since units are the same in kilometers, they will cancel out) plug in values and solve.

That's it!

how can understanding velocity help to prevent a mid-air collision

Answers

Answer:

To maintain enough time to prevent a collision, a system operating in air traffic where aircraft speed does not

fall below 100 km/h (most medium-sized UAVs and GA aircraft) will need to be able to detect obstacles which

subtend an arc-width of as small as 0.125 mra

pulling a 15 kg mass from a bucket from a depth of 6 meters well a man shook 20 sec what was his power

Answers

Answer:

power=44.1 watts

Hope it helped

PLS mark BRAINLIEST

Which of the following describes a change in energy that occurs as an acorn falls from a tree toward the ground

Answers

the last one which is D

As an acorn falls from a tree toward the ground, gravitational potential energy is converted into kinetic energy.

To find the correct option among all the options, we need to know about the conversation of energy.

How are the gravitational potential energy and kinetic energy defined near the earth surface?Near the earth surface, the gravitational potential energy is given as mass×g×height from the earth surface.Kinetic energy is given as 1/2×mass×velocity².How are the gravitational potential energy and kinetic energy converted when acorn falls from a tree?When an acorn is going to fall, it is at maximum height of its journey, so it has maximum gravitational potential energy.Also, at that time, its kinetic energy is zero as it's at rest.But when it moves down, its potential energy decreases as the height decreases and kinetic energy increases due to increasing velocity. So that its total mechanical energy is conserved.

Thus, we can conclude that option (d) is correct.

Learn more about the conversation of gravitational potential energy to kinetic energy here:

brainly.com/question/11333389

#SPJ2

From an apple tree 2 metres high, a 100g mass apple fell of the tree, what work did it do?

Answers

Answer:

When an apple falls from the tree to the ground, its energy of position (stored as gravitational potential energy) is converted to kinetic energy, the energy of motion, as it falls. When the apple hits the ground, kinetic energy is transformed into heat energy.

Other Questions
A student used a microscope to study four members of the phylum Ciliophora. Members ofthis phylum move when propelled by hundreds of tiny cilia.ParameciumcaudatumParameciumaureliaOsALLA3220ParameciumbursariaParameciummultimicronucleatumVIITTEITAAlthough these organisms belong to the same phylum, they are classified as different -A familiesB speciesC kingdomsD orders You own your own business and you need to interview 2 person to have a specific job.(BE CREATIVE)Write 10 question for your interview... CAN SOMEONE PLEASE TRANSLATE THIS FOR ME?!! PLEASEEEE IM LITERALLY BEGGING Scenario #1You get a weekly allowance of $30 from your parents that is automatically transferred into your checking account. Tomorrow you are going to see a movie with your best friend which you often do. Your movie ticket and snacks cost $22, What is the best payment option for this scenario?Questions:Will you use cash, check, Prepaid card, Debit card, Credit card or P2P?Why did you choose that payment option?What are other possible payment decisions you can make? A tunnel is in the shape of a parabola.if the tunnel is 40 feet wide and has a maximum height of 12 feet. write the equation of the quadratic function that represents the tunnel(let the axis of symmetry be the y-axis) What is the vertex of the parabola y=(x+3)+9?(3,9)O (-3,-9)O (3,9) In UVW, the measure of W=90, the measure of U=19, and WU = 85 feet. Find the length of VW to the nearest tenth of a foot. During the 1800s and 1900s, what concept guided the independence movement in India? please view math question and help!! GEOMETRY. Need help i will give brainliest Frank says to Mary, "If you wash every window in my house today, I'll pay you $200.1don't care if you do it, but there is $200 in it for you if you do." Mary washes 12 of the 20windows in Frank's house by 2:00 p.m. At this point, which of the following is true?Group of answer choicesMary is obligated to finish washing the windows.There is no contract yet in this situation.Frank can revoke his offer to pay Mary the $200 for washing the windows.Mary has formed a contract by beginning to wash the windows. Copper has a specific heat of 0,900 J(g C). How much energy in kJ is needed to raise the temperature of a 700 g block of aluminum from 30.7C to 82,1C?(show your steps) Why do siblings always look different from each other even though they have the same parents? *A. Siblings look exactly the same.B. This is because there are always random mutations in everyone's DNA.C. There is no reason, this is just random.D. Due to meiosis, siblings each get slightly different genetic information from both parents.which one ^ How much did movies A and D combined make that week? Which graph represents the solution set of this inequality? 11q +5 49 use the correct direct object and change past participle if needed so ive been ground for 3 months for a low grade in math what should I do to get un grounded Determine the measure of angle A Write a list of school staff in order from most to least influential(have it list more than 3 people) A student runs 7 km in 2 hours to train for sports. What is the students average speed?