What is the difference between a permanent magnet and a temporary magnet
Answers
Answer 1
Answer:
A permanent magnet does not loose its magnetism easily. It can only be lost by permanent destruction say by fire. Example of this is magnetism from a bar magnet. This magnetism is not induced by say electric current.
A temporary magnet looses its magnetism easily. The magnetism is gained or loosed for the action of carrying out a particular task. This magnetism can be achieved by the gain or loss by passing of electric current over say an iron core.
Answer 2
Answer:
Pernament magnet is one that retains its magnetic properties for a long period of time. Temporary megnet only maintains its magnetism while in a magnetic field produced by permanent magnet or electric current.
How fast will a cart be moving if a force of 200 N is applied to a 50 kg cart for 10 sec?
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Acceleration = (force) / (mass)
If there is no friction . . .
Acceleration = (200N) / (50 kg) = 4m/s²
Change in speed = (acceleration) x (time) = (4 m/s²) x (10 sec) = 40 m/s
Final speed = (speed of the cart before the force began) + (40 m/s more)
(That's about 89 mph faster than the cart was moving before the force started.)
I'm assuming that the cart starts from rest.
Initial velocity (vi): 0 m/s Final velocity (vf): ? Acceleration (a): ? Force (F): 200 N Mass (m): 50 kg Time (t): 10 s
F= ma 200 N= (50kg)(a) a= +4 m/s^2
a= (vf-vi)/t +4 m/s^2= (vf - 0m/s)/10s vf= 40 m/s
Answer: the cart will be moving 40 m/s.
1. Go onto the Newsround website or article2. Search "School girl banned for Muslim dress" Answer this question: Who is Sobia?
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I cant find a article with that name? Are you sure its right?
Answer:
I read the article - the story was really sad.
Explanation:
- sincerelynini
What is the correct term for the measurement of the geographic distribution of species?
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Biogeography is the correct term that can be used to measure the geographic distribution of the species. It is the study of the distribution of the species in a particular geographical location and in a particular geological time. The distribution of the organisms may vary due to geographical gradients such as elevation, latitudes, and habitat area. Phytogeography is a sub -branch of biogeography which deals with the distribution of the plants in a particular location. Zoogeography is the sub-branch of the distribution of the animals in a particular location.
Ionic compounds molecules have strong forces of attraction between neighboring molecules. Which conclusion could be drawn about materials held together by ionic bonds? A) These materials would have low densities as solids. Eliminate B) These materials would have very high boiling points. C) These materials will likely be gases at room temperature. D) These materials will likely be liquids at room temperature.
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Answer:
these material would have very high boiling points
Answer: B
Explanation:
As volume increases mass will__
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If you're working with a solid or a liquid, the only way to increase volume is to add more solid or liquid, so the mass must also increase. (I don't want to get into temperature and confuse you.)
Not so with a gas. If you want to increase the volume of a jar of gas, all you have to do is pipe it into a bigger jar. Gas always expands to fill whatever you put it in. So if you're working with a gas, you can increase the volume with no change in the mass.