Timmy placed a horseshoe magnet on his desk. He then sprinkled some iron filings around the magnet. In the images below, the poles of the horseshoe magnet are shown in white. Which of the following images best shows how the iron filings arranged themselves?
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Answer:
The 3rd image
Explanation:
A magnet has 2 poles, north and south. Magnetic fields originate from the north pole and the move to the south pole.
They are concentrated at the poles where they are strongest.
The best image that demonstrates the arrangement of the magnetic fields is the 3rd image.
Answer:
The 3rd image
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Describe briefly difference between conduction, convection, and radiation.
In the muscle cells in your body, ______ energy is changed into __________ energy.
Why is the specific heat capacity of the human body close to, but somewhat less than, that of water?
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So if the temperature increases so does the heat. If the heat increases then so does the thermal energy. If the temperature goes up then so does the thermal energy. ETC...
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fulcrum to get the correct mechanical advantage?
Answers
Answer:
The distance of load from fulcrum is 5 m.
Explanation:
Given:
Mechanical advantage, MA = 0.4
Distance of force from fulcrum is,
Distance of load from fulcrum is,
We know that, Mechanical advantage of a machine is the ratio of the effort arm and load arm.
So, Mechanical advantage is given as:
Therefore, the distance of load from fulcrum is 5 m.
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When you lift a box up off the floor, you must exert a force at least equal to the weight of the box. If you lift the box at constant speed, you "do work" on the box that would be equal to the force you exert (the weight of the box) times the height through which you lifted the box. If you exert a force of 50 Newtons on the box and lift it 1 meter high, then you did (50 N)x(1 m) or 50 N-m of work on the object. 1 Newton-meter is called a Joule (J), pronounced "jewel." In lifting the 50 N box upward 1 meter at constant speed, you would do 50 Joules of work on the box. That means your body used 50 J of energy to lift the box.
and here is the Equation for Work: Work = Force x distance, or W = F d.
When you lift a box up off the floor, you must exert a force at least equal to the weight of the box. If you lift the box at constant speed, you "do work" on the box that would be equal to the force you exert (the weight of the box) times the height through which you lifted the box. If you exert a force of 50 Newtons on the box and lift it 1 meter high, then you did (50 N)x(1 m) or 50 N-m of work on the object. 1 Newton-meter is called a Joule (J), pronounced "jewel." In lifting the 50 N box upward 1 meter at constant speed, you would do 50 Joules of work on the box. That means your body used 50 J of energy to lift the box.
and here is the Equation for Work: Work = Force x distance, or W = F d.
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The outside pressure forces the liquid up the straw and into your mouth. So, just by drinking through a straw, you can observe an important property of fluids. Fluids flow from areas of high pressure to areas of low pressure.
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