what noncontact forces act on an object that are balanced

Answers

Answer 1

Answer:

I can give you a list of noncontact forces off of my head, if that is what you need.

Explanation:

First, gravity. It acts everywhere and pulls down every object that is in the air towards the ground, unless they have an equal and opposite force that counters it.

Second, wind. I don't think this will count because wind is a physical thing, but it can be used in the same way as we did with gravity. If the force counteracting it is larger, equal, and opposite of the force it is countering, then it will move forward, through the wind.


Related Questions

I'LL MARK YOU BRAINLIST!!
ali starts moving his car from rest and accelerates it at 5 m/s^2 over 8 seconds. what is the velocity of ali's car reached by the end of these 8 seconds ?

Answers

Explanation:

u=0, v=?, a=5m/s², t=8sec

So, by the formula,

v=u+at

v=0+5×8

v=40m/s.

hope this helps you .

What can cause matter to change from one state to another?

a change in its temperature

a change in its pressure

both a and b

neither a nor b

Answers

The answer is Both A and B

a person would weigh less on Mercury than on planet blank because blank

Answers

Answer:

Earth because of greater gravity

Beachside there’s less gravity in mercury which makes us weigh less however our mass never changes lol

A body moving with constant acceleration covers the distance between tu point 60m apart in 5s. Its velocity as it passes the second point is 15m/s. What is the acceleration?​

Answers

Please find attached photographs for your answer.

Hope it helps.

Do comment if you have any query.

A taxi is travelling at 20 m/s. Its driver accelerates with acceleration 5 m/s2 for 4 s. What is its new velocity?​

Answers

Please find attached photograph for your answer.

Hope it helps.

Do comment if you have any query.

Question 5: A heavy rope is flicked upwards, creating a single pulse in the rope. Make a drawing of the rope and indicate the following in your drawing
a. the direction of motion of the pulse
b. Amplitude
c. Pulse length
d. Position of the rest​

Answers

Answer:

the direction of motion of the pulse

If a car is at rest, which of the following is correct?
A.not enough information

B.more than 3 forces are acting on the car

C.no force acts on the car

D.The net force on the car is zero​

Answers

Answer:

D

Unbalanced or net forces acting on the car will cause it to move

The correct answer is option D. The net force on the car is zero​.

What forces act on a car at rest?

Since the car is not accelerating, the force of air resistance and the friction force must add to give the exact opposite of the applied force. The net force here would be zero, as well.

When an object is at rest no gravitational force is acting on it?

Newton's First Law is the law of inertia. An object with no net forces acting on it which is initially at rest will remain at rest. If it is moving, it will continue to move in a straight line with constant velocity.

Learn more about Newton's First Law here:  https://brainly.com/question/11472821

#SPJ2

how do mechanical waves compare with electromagnetic waves?

Answers

Answer:

Electromagnetic waves are waves that have no medium to travel whereas mechanical waves need a medium for its transmission. Electromagnetic waves travel in a vacuum whereas mechanical waves do not. The mechanical waves need a medium like water, air, or anything for it to travel.

Explanation:

UV light has ______ wavelengths than visible light waves, and its peak energy is at a wavelength of ______.

Answers

Explanation:

Shorter wavelength since UV light has more energy than visible light

365 nm - What is the peak energy wavelength of UV light?  It allows both infrared daylight and ultraviolet night-time communications by being transparent between 320 nm and 400 nm and also the longer infrared and just-barely-visible red wavelengths. Its maximum UV transmission is at 365 nm

What is the total amount of potential and kinetic energy in a system? *
1 point
A: Electrical energy
B: Heat energy
C: Mechanical energy
D: Nuclear energy

Answers

Answer:

C. Mechanical Energy

Explanation:

The total amount of mechanical energy is merely the sum of the potential energy and the kinetic energy.

consider two vectors A and B Where A-B and |A+B|=|A-2B| vector B is directed in the positive x_direction and A makes an angle of 60°above the positive x_axis find magnitude of the two vectors​

Answers

Answer:

It should be mentioned that an efficient way to work this vector addition problem is with the cosine law for general triangles (and since  

a

,

b

 and  

r

 from an isosecles triangle, the angles are easy to figure). However, in the interest of reinforcing the usual systematic approach to vector addition, we note that the angle  

b

 makes with the +x axis  is 30

0

+105

0

=135

0

(a) The x component of  

r

x

=(10.0m)cos30

0

+(10.0m)cos135

0

=1.59m

(b)  the y component of  

r

 is r

y

=(10.0m)sin135

0

 = 12.1 m.

(c) the magnitude of  

r

 is r =  ∣

r

∣=

(1.59m)

2

+(12.1m)

2

=12.2m

(d) The angle between  

r

 and the +x direction is tan

−1

[(12.1m)/(1.59m)]=82.5

0

Explanation:

Elements in the periodic table are arranged in order of increasing...
A mass number
B.Number of protons
C. number of neutrons
D. number of nucleons​

Answers

Answer:

(B) The number of protons - only the number of protons in the nucleus determines the element - mass and neutrons can vary for the same element

a ______ is a push or pull that acts on an object

Answers

Answer:

A force is a push or pull that acts on an object.

:)

Answer:

force

Explanation:

It's unit is in Newton

What is the acceleration of a 20 kg backpack lifted with a force of 15 N?

a. 0.75 m/s2
b. 1.33 m/s2
c. 300 m/s2
d. 5 m/s2

Answers

The answer is option A. 0.75 m/s^2

the formula needed to solve this is acceleration = force/mass

we know the following:

mass of the backpack = 20KG

the force is 15N

therefor- acceleration = 15/20

which can also be written as 3/4, leaving us with the final answer of .75 m/s^2

Answer:

0.75 m/s2

Explanation:

0.75 m/s2

Find the work done while lifting a 115 kg sofa 1.5 m off the ground.
Find the weight first

Answers

P= 10m = 10 x 115 = 1150 N

work done while lifting a 115 kg sofa 1.5 m off the ground :

A= Ph = 1150 x 1.5 = 1725 J

P/s: I think the weight first is 115kg

ok done. Thank to me :>

the second law of thermodynamics imposes what limit on the efficiency of a heat engine?

Answers

A heat engine cannot have a thermal efficiency of 100% For all reversible processes, the second-law efficiency is 100%. The second-law efficiency of a heat engine cannot be greater than its thermal efficiency. The second-law efficiency of a process is 100% if no entropy is generated during that process

A car accelerates from rest to 40 m/s. Later, on a highway it accelerates from 40 m/s to 80 m/s. Which takes more energy, going from 0 to 40, or from 40 to 80

Answers

Answer:

40 to 80

Explanation:

A car's kinetic energy changes with the speed.  Cars going slower have less potential energy than cars going faster.

Describe the forces that make a bicycle move.

Answers

Answer:

this is an example of Newton's Second Law, acceleration happens when a force acts on a mass.

the force that makes the bicycle move is your foot pushing against the pedal

Andrew skis down a hill.



Andrew starts from the top of the hill and his speed increases as he goes downhill.

He controls his speed and direction by using his skis.

He brings himself to a stop at the bottom of the hill.

Describe the energy changes that happen between starting and stopping.

Answers

Explanation:

gravitational potential energy at the top of the hill, which transforms into kinetic energy as he moves bottom of the hill

that's mean potential energy transfoms into kinetic energy

His potential energy is converted into kinetic energy when his speed increases as he goes downhill.

What is mechanical energy?

Mechanical energy is the combination of all the energy in motion represented by total kinetic energy and the total potential energy stored energy in the system which is represented by total potential energy.

Total mechanical energy is s the sum of all the kinetic as well as potential energy stored in the system.

ME = KE + PE

When Andrew skis down a hill then he had stored potential energy due to the height of the hill and his gravitational weight,

Due to the height of the slope and his weight, Andrew had potential energy stored when he skied down it.

As he descended the hill, his speed increased, transforming this potential energy into kinetic energy.

Learn more about mechanical energy from here,

brainly.com/question/12319302

#SPJ2

Please help me calculate this question along with the equation

Answers

Hi there!

We can use the following:

U (Gravitational Potential Energy) = mgh

m = mass of object (kg)

g = acceleration due to gravity OR gravitational field strength

h = height, or displacement (m)

ΔU = Uf - Ui, so:

Uf = 3 × 1.5 × 10 = 45 J

Ui = 3 × 0 × 10 = 0

ΔU = Uf - Ui = 45 - 0 = 45 J

How many revolutions does the motor shaft turn through between the time when the current is reversed and the instant when the angular velocity is zero

Answers

Answer:it equals 0

Explanation:hope this is a good answer

Angular velocity is the ratio of angular displacement to time. Then the number of turns by the shaft is zero.

What is angular velocity?

The rate of change of angular displacement is called angular velocity. It is a vector quantity.

We know that the angular velocity formula

[tex]\rm Angular \ velocity = \dfrac{Angular \ displacement}{time}[/tex]

The motor shaft turns through between the time when the current is reversed and the instant when the angular velocity is zero.

Then the number of turns will be

[tex]\rm Number \ of\ turns = Angular \ velocty \times time \\\\Number \ of\ turns = 0 *time \\\\Number \ of\ turns = 0[/tex]

The number of turns by the shaft is zero.

More about the Angular velocity link is given below.

https://brainly.com/question/7359669

A 2.3 kg ball has 76 J of kinetic energy. How fast is it moving? Show all work and use correct units of measurement for the answer to get full credit.

Answers

Answer:

8.13 m/s

Explanation:

The kinetic energy of an object can be found by using the formula

[tex]k = \frac{1}{2} m {v}^{2} \\ [/tex]

m is the mass in kg

v is the velocity in m/s

To find the velocity we make v the subject of the equation

That's

[tex]v = \sqrt{ \frac{2k}{m} } \\ [/tex]

From the question

k = 76 J

m = 2.3 kg

We have

[tex]v = \sqrt{ \frac{2 \times 76}{2.3} } = \sqrt{ \frac{152}{2.3} } \\ = 8.129388...[/tex]

We have the final answer as

8.13 m/s

Hope this helps you

A galaxy spectrum has a redshift of 70,000 km per second. If the Hubble constant is 70 km per second per Mpc (megaparsec), how far away from us in this galaxy

Answers

Using the Hubble law v = H₀d where v = recessional speed = 70,000 km per second H₀ = hubble constant = 70 km/s/Mpc and d = distance of galaxy.

Making d subject of the formula, we have

d = v/H₀

Substituting the values of the variables into the equation, we have

d = v/H₀

d = 70000 km/s/70 km/s/Mpc

d = 1000 Mpc

So, the galaxy is 1000 Mpc away from us.

Learn more about hubble law here:

https://brainly.com/question/18484687

When riding your bike, you come up to a small child who jumps in front of you. You slam on the brakes, and your bike comes to a sliding stop. Which force greatly increases when you lock the brakes and slide

Answers

Answer: friction :)

Explanation:

I took the test and got 100%

Kichelle enjoys balloon animals from the carnival. She just received a balloon giraffe that has an initial temperature of 39.0°C and a volume of 1.28 L. If Preston plays a trick on Kichelle, and puts her balloon giraffe into the freezer, what would be the new volume of the balloon if the temperature drops down to 8.0°C?

Answers

39°C=1.28L

8°C=? Less

=8°C/39°C×1.28L

=8/39×1.28L

=10.24/39

=512/195

=2.6L

a runner joys 12km north than turs and runs 16km east in three hours.
a. what is his displacement
b. calculate his average speed
c. calculate his average including the direction ​

Answers

Explanation:

a.displacement is vector quantity there fore

we combine the two direction

[tex] {c}^{2} = \sqrt{ {a}^{2} + {b}^{2} } [/tex]

[tex] {c}^{2 } = \sqrt{ {12}^{2} + {16}^{2} } [/tex]

[tex] {c}^{2} = \sqrt{400 } [/tex]

[tex]c = 20[/tex]

displacement is 20km to wards north

b:average speed

[tex]v = s \div t[/tex]

20/3=6.67

c: please type correctly

your field of study in college is called your________.

Answers

Answer:

Majors are also called concentrations. An academic major or concentration is a college or university student's main field of specialization during his or her associates or undergraduate studies which would be in addition to, and may incorporate portions of, a core curriculum.

1 point
What is the potential energy of a 12543 kg tank this on the ground? (only
put the number, no units or commas) *

Answers

Answer:

PE=0

Explanation:

If the tank is on the ground, there is 0 height which means the equation of PE=mh will be PE=12543(0)=0, hope this helps!

NEED ANSWER ASAP!
Which statement about a converging lens is not correct?

A ray parallel to the principal axis of the lens is refracted through the principal focus.

B All rays of light refracted by the lens pass through the principal focus.

C The distance between the centre of the lens and the principal focus is the focal length

D The principal focus of the lens is a point on the principal axis.​

Answers

Geometric optics allows you to find which the correct answer about which false statement is:

  B)  All rays of light refracted by the lens pass through the principal focus.

Geometric optics studies the formation of images using the light geometric properties of optical systems, the main expression for this is:

      [tex]\frac{1}{f} = \frac{1}{p} + \frac{1}{q}[/tex]  

Where f is the focal length, p and q the distance to the object and the image respectively.

There are some points of special interest:

Object at infinity (p = ∞).  In this case of the expression we see that the image is at the focal length. Image at infinity (q = ∞). In this case the object is at the focal point.

Let's analyze the claims.

A) True. A parallel ray comes from infinity and the image is formed at the focal point.

B) False. The image point is given by the expression above and depends on the distance to the object.

C) True. This is the definition of focal length.

D) True. All distances are measured from the main axis.

In conclusion, using geometric optics we can find that the correct answer about which false statement  is:  

      B)  All rays of light refracted by the lens pass through the principal focus.

Learn more about geometric optics here: brainly.com/question/2548694

un cuerpo suspendido en el aire es capaz de:
a) liberar energía al caer
b) puede ejecutar un trabajo
c) posee energía antes de caer
d) todas son correctas

Answers

Answer:

Explanation:

d

Other Questions
Pls help me with this French assignments .. each of the questions has multiple choice.. Pls choose from the multiple choice below to answer the questions. 1.) : (a)prend (b) bois.2.): (a)prenez (b) boivent 3.): (a)prenez (b) boit4.): (a)prennent (b) prends 5.): (a)boit (b) buvons While designing a management support system, it's important to remember that executives' main concern is _____. HELP ITS TIMED AND IM STUCK ONE THIS QUESTION When the price of a normal good rises, the income effect results in ________ in the quantity demanded and the substitution effect results in ________ in the quantity demanded. how many words are there in the pledge of allegiance? After an unfortunate accident occurred at a local warehouse, you were contracted to determine the cause. A jib crane collapsed and injured a worker. An image of this type of crane is shown in the figure.The horizontal steel beam had a mass of 88.50 kg per meter of length, and the tension in the cable was =11650 N . The crane was rated for a maximum load of 500 kg . If =5.580 m , =0.522 m , =1.350 m , and =2.070 m , what was the magnitude of L (the load on the crane) before the collapse? The acceleration due to gravity is =9.810 m/s2 For a reversible system, the entropy change of the system is equal to entropy transferred with _____. What is the difference between traditional and new social movements? Match the terms to their definition.1. the result of a transformation on a point or figure2. a transformation that preserves distancethe flipping of a plane about a fixed line; a transformation3.resulting in a mirror image over a linethe process of setting up correspondence between the4. elements by of two sets so that every element of the first set corresponds to a unique element in the second setIsometry Image Reflection Transformation Consider the following proportion:27 = 12xUse cross products to write the equation: 2x = 84.What is the value of x? Explain the connection between Abrahams covenant with god and the Israelites believe about Canaan Please help I need the answer quickly. what mountain did moses receive the 10 commandments Which expression has a value equal to 28 divided by 4 There are 4 options. 7x44x2828/44/28 1.1x10^5 in standard notation AYOOOO HELP!!!!!!!!!!!!!!!!!!! Often times, ___killed in alcohol-related crashes.A. no one isB. only the guilty party isC. passengers does the digestive system functions well if the small intestine is being removed? Find the measure of the exterior angle. describe some of the problems encountered by the Spanish when they were establishing new towns.*to be submitted in 10 minutes* please help