What needs to be the relation between the two forces to cause the upper magnet to float without moving?

Answers

Answer 1

Answer:

If it points the other way, the fields subtract, for a lower energy, and so the magnet prefers to turn to point in this way. Magnets in uniform fields feel torques which make them turn around if they are not pointing in the right direction, but there is no net force making the magnet want to levitate.

Explanation:


Related Questions

How does planting high yield crop varieties make farming more sustainable

Answers

Answer:

The more high yield crops are planted, the more production there will be from plants.

Explanation:

High-yield plants are plants that are genetically modified or modified artificially in a way that makes farming plants more efficient. More crops grow, therefore more money.

The answer is, the more high-yield plants there are, the more efficiency there will be from farming.

Answer:

Its D

Explanation:

my options were these

A. It increases the amount of water needed

B. It keeps soil fertility from diminishing over time

C. It keeps chemicals form entering the watershed

D. It decreases the amount of land needed

Please help! I will give Brainliest! The image shows a cross section of a landscape and a well.


1: Land surface. 2: Unsaturated zone. 3: Groundwater. 4: Saturated zone.


Please Hurry timed test! Which of the layers shown is an aquifer?


1

2

3

4

Answers

3 - aquifers are permeable rock so they contain groundwater

Answer:

3!

Explanation:

have a nice day

volcanos create rich soil for farming true or false
(30 points)

Answers

True
Hope this helps
true have a good day! ;)

3. Which of the following is an example of a
supplemental restraint system?
(a) air bag
(c) lap and shoulder belt
(b) safety belt
(d) antilock brakes

Answers

Answer:

A) air bag is your answer

Answer:

air bag

Explanation:

Any of several restraining systems in a vehicle, such as an airbag, in addition to the seatbelts.

the two ways you could increase acceleration

Answers

Answer: mass(how much the object weighs) and force(how hard you push the object)

Explanation:

TRUE or FALSE? If an object moves in a circle at a constant speed, its velocity vector will be constant. Explain your answer.

Answers

the velocity will change since the direction changes. what is the relationship between velocity and acceleration in a circle.

What of the following does NOT influence resistance? *
A.thickness of wire
B.temperature
C.material of wire
D.Number of components

Answers

Answer:

D. Number of components

Explanation:

Answer:

D. Number of components

Explanation: hope this helps :)

Traveling in circle requires a net force

Answers

Answer:

Circular motion requires a net inward or "centripetal" force. Without a net centripetal force, an object cannot travel in circular motion. In fact, if the forces are balanced, then an object in motion continues in motion in a straight line at constant speed.

Explanation:

Which phrase correctly describes ice?

A) Rigid and having low viscosity
B) Crystalline and having high surface tension
C) Amorphous and having low viscosity
D) Crystalline and rigid

Answers

Answer: D) Crystalline and rigid

Explanation:

Ice is considered to be a rigid mineral. It possesses a regular crystalline structure based on the molecule of water, which consists of a single oxygen atom covalently bonded to two hydrogen atoms, or H–O–H.

Answer: D

Explanation:

What is the speed of a high-speed electron traveling at right angles to a 0.80-tesla magnetic field with a force of -7.5 x 10^-12 newtons? The charge of an electron is 1.60 x 10^-19

Answers

Explanation:

Answer:

Magnetic field, B = 0.016 Tesla

Explanation:

It is given that,

Velocity of electron, v=9.6\times 10^5\ m/sv=9.6×10

5

m/s

Magnetic force, F=2.6\times 10^{-15}\ NF=2.6×10

−15

N

Charge, q=1.6\times 10^{-19}\ Nq=1.6×10

−19

N

The magnetic force is given by :

F=qvBF=qvB

B=\dfrac{F}{qv}B=

qv

F

B=\dfrac{2.6\times 10^{-15}}{1.6\times 10^{-19}\times 9.6\times 10^5}B=

1.6×10

−19

×9.6×10

5

2.6×10

−15

B=0.016\ TB=0.016 T

So, the magnitude of magnetic field is 0.016 Tesla. Hence, this is the required solution.

Answer:

F = q  v B so v = F/q B

v = -7.5 × 10-12/(-1.60 × 10-19) (0.80) = 5.9 × 107 m/s

Explanation:

What is the volume of this rectangular prism?
1/4cm 1/3cm 1/2cm​

Answers

Answer:

1/24

Explanation:

1/4 * 1/3 * 1/2 = 1/24

Answer:

1/24

Explanation:

Which is NOT a subjective feeling experience? A) Happy B) Sore C) Angry D) Sad

Answers

sore because you can’t be influenced by someone to be sore

Answer:

b sore

Explanation:

because it's a physical feeling I think

F.
Using this formula m = =, If a car is pushed with a net force
of 5000N, resulting in an acceleration of 3.5m/s2, what is the
mass of the car?
a 1438.5kg
b 1428.6kg
c 1328.6kg
d 1421.6kg

Answers

Answer:

C

What is the answer please help her

how does the electric force between two charged particles change if the distance between them is increased by a factor of 3? a. it is reduced by a factor of 3 b. it is increased by a factor of 3 c. it is increased by a factor of 9 d. it is decreased by a factor of 9

Answers

Answer:

It is reduced by a factor of 9

David drinks a glass of water in his kitchen. The water is at room temperature, and David
decides to make it colder by adding ice. Which of the following describes why the ice cubes
will melt?

A. Liquid water is reacting with solid water to absorb energy.
B. Water is evaporating from the surface of the water.
C. Slow-moving molecules move out of the ice.
D. Heat from the water moves into the ice.

Answers

Answer:

I think it's C

Explanation:

helpppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp

Answers

There’s force of friction/ drag that slows down a moving object, there’s also gravity pulling the wagon down which would help slow it down. Hope this helps good luck.

An airplane moves in straight level flight at constant velocity. What is the
net force acting on it if the mass of the plane is 1000 kg and the frictional
drag of the air is 1800 N? *

Answers

Answer:

Net force = 0

Explanation:

We have, an airplane moves in straight level flight at constant velocity.

Mass of the plane is 1000 kg

The frictional force acting of the air is 1800 N.  

It is required to find the net force acting on it. We know that net force is given by the product of mass and acceleration. But here the airplane moves with constant speed, it means its acceleration is equal to 0 such that net force is equal to 0.

   

A uniform electric field contains a number of particles. All are experiencing forces in the same direction as the electric field. What can be concluded from this?

All the particles have negative charges.
All the particles have positive charges.
All the particles are charged, but they may be positive or negative.
All the particles must be uncharged.

Answers

Answer: D

All the particles must be uncharged

Explanation:

If all the particles are positively charged, then there will be force of repulsion between them which will give different directions away from each other. The same is applicable if they are all negatively charged.

If the particles are positively and negatively charged, their will be force of attraction between them which will give different directions towards each other.

For all to be experiencing forces in the same direction, We can conclude that

All the particles must be uncharged.

Answer:

This picture represents the electric field diagram between two particles with static charges.

Do the two particles have the same charge?

✔ no

If the particles are free to move, what affect will the two particles have on each other?

✔ They will attract each other.

If a third particle was added to this field with a positive charge, what would it be attracted to?

✔ B

If an uncharged particle was placed between A and B, which way would it move?

✔ neither direction

Explanation:

Which of the following gives the best description of the motion of electrons in a conductor?
A.
The electrons in conductors usually move in straight lines.
B.
The electrons in conductors are able to move about freely.
C.
The electrons in insulators are unable to move about freely.
D.
The electrons in conductors usually move in regular patterns.

Answers

Answer:

The correct answer is B.  The electrons in conductors are able to move about freely.

Explanation:

The conductive materials are those that have an atomic structure that favors that the electrical charges can be easily moved inside. That is,  a conductive material is one that allows the transport of electric charge, presenting little resistance to the movement of electric charge or electrons when an electric field is applied.

The arrangement and freedom of movement of the electrons along the atomic structure is what favors the circulation of electricity through the conductor.

So, the correct answer is B.  The electrons in conductors are able to move about freely.

2. What other physical quantity might be more important to weightlifters than
how much actual work they do?

Answers

Answer:

The pressure on their bone  

Center of mass & balance.

Which statement correctly describes the differences between positive and negative acceleration?
Positive acceleration describes a change in speed: negative acceleration describes no change in speed.
Positive acceleration describes no change in speed; negative acceleration describes a change in speed.
Positive acceleration describes an increase in speed; negative acceleration describes a decrease in speed.
Positive acceleration describes a decrease in speed negative acceleration describes an increase in speed.

Answers

positive accel.=increase in speed

negative accel.= decrease in speed

Answer: positive accel.=increase in speed

negative accel.= decrease in speed

Explanation:

does space have plenty of oxygen ​

Answers

Answer:

I don't think so because we can't breathe in space

Explanation:

Answer:

No

Explanation:

There is no oxygen in space, so astronauts must bring tanks of oxygen

Balance chemical reactions: please help question attached

Answers

2 AsI —> 2 As + 3 I

hope this helps!

Which of the following describes how the current in a circuit can be increased? Select all that apply.
A.
increase the voltage and the resistance
B.
increase the voltage while keeping the resistance constant
C.
decrease the voltage and the resistance
D.
decrease the resistance while keeping the voltage constant

Answers

Answer:

B. and D. would be my best guess.

Explanation:

The reason why is because if you lower the resistance, the voltage will be higher, and if you higher the voltage, the resistance would be lower and the voltage would higher.

The two major problems with most motor vehicles are that they burn fossil fuels and _____________.
A. Create radioactive waste
B. Create thermal pollution
C. Release chlorofluorocarbons
D. Release greenhouse gases

Answers

Answer:

The two major problems with most motor vehicles are that they burn fossil fuels and. Release greenhouse gases ( D)

The two major problems with most motor vehicles are that they burn fossil fuels and release greenhouse gases. Option (D) is correct answer.

What are the greenhouse gases?

The Earth's atmosphere naturally contains these gases or compounds. But humans are also responsible for their release. These gases are essential for capturing the heat from the Sun and gradually raising Earth's temperature. Because of the balance between the energy it absorbs and the energy it reflects back into space, the Earth is habitable for people.

The greenhouse effect is the term used to describe how the greenhouse gases in the atmosphere capture and emit radiation. Without this mechanism, Earth would either be extremely cool or extremely hot, which would make life on the planet impossible.

The greenhouse effect occurs naturally. The release of industrial gases into the atmosphere, the burning of fossil fuels, and other improper human activity are all contributing to an increase in greenhouse gas emissions.

As a result, this has contributed to global warming.

Learn more about greenhouse gas here:

https://brainly.com/question/4509458

#SPJ2

HELP ASAP
this is for science, and if i get the questions right, I pass, but the teacher never taught us the lesson, idrk y. so i really need help:( Im giving away 20 points so please give me your best answers ;)


1. As an astronaut travels from the surface of Earth to a position that is four times as far away from the center of Earth, based on the Law of Gravity which of the following statement is true?


a. mass remains the same and the gravitational pull from Earth decreases

b. weight remains the same and the gravitational pull from Earth changes

c. weight increases and the gravitational pull from Earth stays the same

d. mass decreases and the gravitational pull from Earth increases

2. A satellite is sent into orbit around the Earth, In which of the following situation would the gravitational force be the greatest?


A. 1200 lb satellite orbiting 150 miles above Earth’s surface

b. 850 lb satellite orbiting 150 miles above Earth’s surface

c. 850 lb satellite orbiting 1500 miles above Earth’s surface

d. 1200 lb satellite orbiting 1500 miles above Earth’s surface


3. High and low tides are the regular pattern of rising and sinking ocean-water levels. They are caused when the sun’s gravity and the moon’s gravity pull on ocean water. The moon’s gravity has a greater effect on Earth’s oceans than the sun’s gravity. Why would the moon have a greater effect than the sun?


a. The moon has less mass than the sun.

b. The moon is closer to Earth than the sun.

c. The moon is not as hot as the sun.

d. The moon has less mass than Earth.



4. Which statement about the universality of gravity is false?


a. The gravitational force between two objects depends only on their masses.

b. Any two objects that have mass also have a force of gravity acting between them, no matter how far apart they are.

c. The gravitational force between two objects increases if the objects move closer together.

d. The gravitational force between two objects increases if mass is added to one object.

Answers

Answer:

1)a- mass never changes as you move from the earth

2)actually am not sure I haven't been taught that too

3)b

4)a-it doesn't depend only on mass but also weight

ASAP if you Answer right I will mark the brainiest

Answers

Answer:

1. internal heat

2.none of above

3.haumea

4. its orbit is not elliptical

5.eris

6.ceres

7.is closer to sun than pluto

Determining Charge
An element becomes a positively charged ion when it
oloses protons.
loses electrons.
gains electrons
gains neutrons.

Answers

Answer:

hey friend,

an element becomes a positively charged ion when it loses electrons

An element becomes positively charged when it loses electrons.

What is the advantage of the SI unit over CGS units?
Help me ...
answer it as fast as you can...​

Answers

Answer:

The advantage of the SI unit over CGS unit are:

S.I has broader base. It has seven base units and two supplementary units.S.I is metric.S.I is coherent.S.I is rational, i.e. it gives one unit for one physical quantity .e g. for energy of any type i.e, mechanical or heat or electrical.There is only one unit Joule(J) but in M.K.S system unit for mechanical energy is joule.

HOPE IT WILL HELP YOU

Units of measurements

The advantage that SI unit has over CGI is that it has only one unit for each measurement

Explanation:

CGS: Also known as Gaussian units

Length is measure in cm (centimeter)

Mass is measured in g (gram)

Time is measured in s (second).

SI unit: The International System of Units

Length is measure in meter (m)

Mass is measured in kilogram (kg)

Time is measured in seconds (s)

In summary with the SI unit student do not need to store any conversion factors in memory

Each antibody can recognize how many types of invaders of the body? A. 1 B. 10 C. 100 D. 1,000

Answers

Answer: D. 1,000

Explanation:

The antibodies are special proteins which can detect the foreign antigens in the body of the host and fight against these antigens. This way the antibodies prevent the infection in the body.

There are five different classes of antibodies in the human body these are IgA, IgG, IgM, IgE and IgD. Each antibody can recognize more than 1,000 antigens of foreign pathogens.

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