Magnetic fields go from the north poles of magnets to the south poles of magnets.
true or false

Answers

Answer 1

The Answer is true, the saying opposites attract are true for magnets when poles match though they repel.

Answer 2

Answer:

true

Explanation:


Related Questions

3. If you increase the distance between
two objects, the gravitational force
between the two objects
A)increases
B)decreases

Answers

Answer:

B

Explanation:

How long will it take for 64 g of a radioactive material to be reduced to 2.0 g if the half-life is 0.5 hours?

Answers

Answer:

2.5 hours is the answer according to me

Which two gases in the atmosphere are essential to life on Earth? *

Nitrogen and Helium
Oxygen and Carbon Dioxide
Neon and Argon
Hydrogen and Helium

Answers

Answer:

Explanation:

Oxygen and carbon dioxide

A steady increase in global temperature has been recorded between 1900 and today. Before concluding that this rise in temperature is the result of the increased burning of fossil fuels since that sametime, which of the following questions would have to be answered? *
A. What is the CO2 content in one metric ton of fossil fuels?

B. Which gases are released when burning fossil fuels?

C. What, if any, temperature rise was occurring prior to 1900?

D. None of these

Answers

Hey there!

The answer would be D. None of these

None of these questions can help support the reason that the temperature increase is based off of the burning fossil fuels.

Hope this helps!

Answer:

C is correct

Explanation:

In unsaturated fats, the fatty acid chain is missing some atoms of _____.

Answers

hydrogen atoms.

Explanation:

This is because unsaturated fatty acids have at least two double-bonded carbon atoms, so they cannot bond with the maximum number of hydrogen atoms.

Answer:

hydrogen atom

Explanation:

they have at least two double bonded carbon atoms,so they they can't bond with the maximum number of hydrogen atom

how does force do positive work on an object?​

Answers

Answer:

It can do work on an object by moving it or changing it.

Explanation:

Brainliest?

Answer:

If you push on an object, thats positive work but if you pull on the object, thats negative work

Explanation:

Any two differences between SI units and derived units
help me...​

Answers

Answer:

SI unit

1) SI unit does not depend on other.

2) they have their own identity.

Derived unit

1) They depend upon other or fundamental unit.

2) they don't have their own identity.

If several forces are exerted on a system, calculate the work done by each force, then multiply the results.
Question 4 options:
True
False

Answers

Answer:

false, each force might have a different about and a different direction

False because each force might have a different about and a different direction.

What is force?

A force in physics is an effect that has the power to alter an object's motion. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

The vector sum of all the forces equals the net force. In other words, the net force is the sum of all forces, it is obtained by combining all forces as vectors. The net force is the sum of the force vectors A + B + C for the situation of the three forces on the force board.

Work done due to force is given as,

Work done, W = F.S cosФ

Where F is force a vector quantity, S is displacement and Ф is angle between them.

When forces are exerted in different direction than net force is calculated using vector sum.

To learn more about force refer to the link:

brainly.com/question/13191643

#SPJ6

What is the current when a 200Ω appliance is plugged in to the wall?

Answers

Answer:1.1 A

Explanation:

Given

Resistance of appliance [tex]R=200\ \Omega[/tex]

We know common house hold voltage in India is [tex]220\ V[/tex]

and according to ohm's law

[tex]V=IR[/tex]

So, current

[tex]I=\frac{220}{200}[/tex]

[tex]I=1.1\ A[/tex]

is friction and pushing similar ????

Answers

Answer:

Yes, they are.

Explanation:

Answer:

No.

Explanation:

Pushing is the act of moving an object "forward" or towards the desired location.

Friction generally occurs when two surfaces (in this case, the ground and the object you are pushing) rub against each other. Gravity & the heaviness of the object will act as the counter to the force applied to push the object. Friction is the object trying to stay still, while pushing is trying to move the object.

~

When a current flows through a light bulb, it emits 30 J light energy in 2 seconds, What is the power of the bulb?

Answers

I believe the answer is P= 15w

The power of the light bulb is 15 watts.

What is power ?

Power in physics is defined as the rate of energy per unit time or in other words the work done by any electrical appliance per unit time. Power is expressed as -

P = E/T where E is Energy and T is the time period.

How to calculate the value of power in the question ?

Given that the light bulb emits 30 J light energy in 2 seconds.

We have E = 30J and T = 2 seconds.

Therefore power(P) = Energy(E) / Time(T)

∴  P = 30 / 2 = 15 watts

Thus the power of the light bulb is 15 watts.

To learn more about power in physics, refer -

https://brainly.com/question/11569624

#SPJ2

ASAP PLEASE!!










When tectonic plates are strained to the point that they can no longer bend, which of the following is most likely to occur?

A. Earthquake

B. Volcanic Eruption

C. Convection Current

D. Ocean Basin Formation

Answers

The answer to you’re is A

A lever used to lift a 200 N object 3 meters off the ground, is doing how many Joules of work?

Answers

Answer:

6000J

Explanation:

T=m.g.h

T=200.(10).(3)

T=2000.(3)=6000J

A flowerpot that has a mass of 1.5 kg is sitting on a windowsill 30 meters from the ground. Is the energy of the flowerpot potential of kinetic?

How much energy does the flowerpot have?

Answers

Answer:

Potential energy

441 joules

Explanation:

The flower pot is not moving so it does not have kinetic energy. Anything that is still and a distance from the ground does have potential energy.

Amount of energy: p=mggh

p=1.5(9.8)(30)=441 joules

The flower pot's energy is measured in potential energy since it is remaining stationary and the energy is stored,  the flowerpot is not moving about so it is not kinetic energy.

The formula for potential energy is:

GPE = mgh

The m stands more mass, the g stands for gravitational energy (9.8m/s^2) and the h stands for height.

Our values for the following terms are:

M = 1.5kg

G = 9.8m/s^2

H = 30 meters

Now, we can plug it into our formula to solve for the amount of potential energy.

GPE = 1.5(9.8)(30)

First, let's multiply the gravitational energy and the height.

30 x 9.8 = 294

Then, multiply the mass by the result.

1.5 x 294 = 441

Therefore, the potential energy of the flowerpot is 441J.

discharge occurs when oppositely charged objects get close enough for the air between them to become electrically charged.

Answers

Answer:

It does both. Once they get close enough the air does start to get charged, but then they eventually discharge when they touch.

Explanation:

Which electromagnetic radiation can be seen with the human eye?

ultraviolet rays and visible light

infrared rays, visible light, and ultraviolet rays

visible light

visible light and X-rays

Answers

Answer:

Visible light

Explanation:

Answer:

C visible light

Explanation:

A 100 kg bag of sand has a weight on 100 N. When dropped its acceleration is what?

Answers

Answer:

The acceleration of the bag of sand is [tex]1\ m/s^2[/tex].

Explanation:

We have,

Mass of a bag of sand is 100 kg

Weight of the bag of sand is 100 N

It is required to find the acceleration of the bag when it is dropped. The weight of an object is given by :

[tex]F =ma[/tex]

When it is dropped, a = g

[tex]g=\dfrac{F}{m}\\\\g=\dfrac{100}{100}\\\\g=1\ m/s^2[/tex]

So, the acceleration of the bag of sand is [tex]1\ m/s^2[/tex].

A flowerpot that has a mass of 1.5 kg is sitting on a windowsill 30 meters from the ground. Is the energy of the flowerpot potential of kinetic?

How much energy does the flowerpot have?

Answers

Answer:

It is Potential and corresponding to

90

J

.

Explanation:

Potential Energy is energy stored in the system and ready (potentially) to be changed into, say, Kinetic Energy through movement.

The general expression for Gravitational Potential Energy is:

U=mgh

where:

mg is the weight; h is the height relative to a certain reference level (the ground in this case) choosen to have zero Potential Energy.

With your data we get:

U=3⋅30=90J

Based on the law of conservation of energy hiw can we reasonably improve a machines ability to do work

Answers

We can reasonably improve a machines ability to do work by reducing the friction between the moving parts of machine.

How much net force is needed to accelerate a 3 kilogram skateboard at 5 m/s2 this last on is a exponent use this formula net force = mass x acceleration Will MARK BRAINLLIEST

Answers

Answer:

15 N

Explanation:

Which of these forces pull or push upward, and which pull or push downward? Explain.

Answers

Answer:

A force is a push or pull that acts upon an object as a result of that objects interactions

Explanation:

When a ball is tossed upward, along the way
A. the amount of kinetic energy and the amount of potential energy change
B. all of its energy is lost to friction with the air, and both kinetic and potential energy are zero at the highest point of travel.
C. its potential energy decreases and reaches zero at the highest point of travel D. its total energy increases and is at a maximum at the highest point of travel

Answers

Answer:

A

Explanation:

going upward, kinetic energy decrease and potential energy increase

Answer:

A

Explanation:

As a ball is thrown into the sky, potential energy increases and kinetic energy decreases. But, the mechanical energy ( that is the sum of the potential and kinetic energy) remains the same....

height of the image formed by a lens is-2cm.0what is the nature of the image?

Answers

Answer:

As the height is negative , image is inverted. This means it is inverted and real

What kind of friction is occurring between a pencil and desktop when you flick the pencil?
Rolling friction
Fluid friction
Static friction
Sliding friction

Answers

The third one sliding friction
Explanation:

A TV draws 0.867 A of current when connected to a 122 V outlet. It’s resistance is 140.71.
A.)How many electrons pass through the TV per minute?
B.)How much electrical energy does the TV convert to other forms of energy
per minute?

Answers

Answer:

Explanation:

current measures charge flowing per second .

A current of .867 A means charge of .867 coulomb is flowing per second

charge flowing per minute = .867 x 60

= 52.02 coulomb

one electrons carries a charge of 1.6 x 10⁻¹⁹ Coulomb

So no of charge flowing per minute

= 52.02 / 1.6 x 10⁻¹⁹

= 32.5 x 10¹⁹ .

B )

electrical energy consumed per minute

= V X I X t , V is volt , I is current and t is time .

= 122 x .867 x 60

= 6346.44 J .

The early experiments with static charges were done by:

Newton
Gilbert
Michelson
Galileo

Answers

Answer:

the answer is b .Gilbert

Explanation:

hope it helps !

What is the velocity of a wave that has a frequency of 400 Hz and a wavelength of 0.5 meters?

Answers

Answer:

4.2

Explanation:

Dinesh wants to launch a package over the garden wall to his friend on the other side. His plan is to set up a see-saw, put the package on one end and jump on the other end. Dinesh determines that he will land on the board with a force of 1,127 newtons, and the package weighs 322 newtons. The board he is going to use for the see-saw is 9 meters long. How close to the end of the board should Dinesh put the fulcrum?

Answers

Answer:

Dinesh should put the fulcrum 2 m from himself and 7 m from the package.

Explanation:

Let the fulcrum be x meters from Dinesh's end.

The sum of clockwise moment must balance the sum of anti-clockwise moment.

Taking a moment about the fulcrum

(Force exerted by Dinesh) × (Distance of Dinesh from the fulcrum) = (Weight of the package) × (Distance of the package from the fulcrum)

Force exerted by Dinesh = 1127 N

Distance of Dinesh from the fulcrum = x m

Weight of the package = 322 N

Distance of the package from the fulcrum = (9 - x) m

1127 × x = 322 (9 - x)

1127x = 2,898 - 322x

1127x + 322x = 2,898

1449x = 2898

x = (2898/1449) = 2 m

Hence, Dinesh should put the fulcrum 2 m from himself and 7 m from the package.

Hope this Helps!!!

When an atom in a reactant loses electrons, what happens to its oxidation number?
A. Its oxidation number decreases
B. Its oxidation number doubles.
C.Its oxidation number increases.
D.Its oxidation number increases by one.
E. Its oxidation number stays the same.

Answers

It would be e because Reduction happens when an element gains electrons; in this case, its oxidation number is lowered. For example, when iron rusts, oxygen can behave as an oxidizing agent. As the oxygen gains electrons, it changes from an oxidation number of zero to an oxidation number of negative two.

Somebody can tell me what answers it is?

Answers

Answer:

D

Explanation:

The color you see is the color the object reflectes. The rest of the color are absorbed by that object.

Isn’t it all colors are absorbed except red? OK I’M NOT THE BRIGHTEST SO
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