What appears to emit regular bursts of radio waves
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Answer 1
Answer:
Many things can be made to produce regular bursts of radio waves, however I believe you are referring to pulsars. A pulsar is a rotating star that gives off regular radio frequency bursts.
You push a friend sitting on a swing she has a mass of 50 kg and accelerates a rate of 4 m/s2 find the force you exerted
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Force exerted: 100
To find force you multiply the mass by acceleration. The formula is F = Ma, and the SI unit for force is newtons.
What could you do to change the volume of a gas?
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The ONLY way to change the volume of a sample of gas is to transfer it to a container with different volume. Simply changing its temperature or pressure in the same jar won't do it. Any amount of gas always fills whatever container you keep it in.
A light shines up from the bottom of a fish pond.Which diagram shows the correct path of light as it leaves the water of the pond and hits the air?
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For the question "A light shines up from the bottom of a fish pond. Which diagram shows the correct path of light as it leaves the water of the pond and hits the air?" The second diagram is the correct answer. Water has a higher refractive index than air so the ray of light passing from water to air will be refracted away from the normal (the vertical) towards the surface of the water.
How can a magnetic feild be used to generate an electric current
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The correct answer is A) When a magnet moves near a wire, it's charging field causes the electrons in the wire to flow as electric current
Are metals conductors or insulators?
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All metals are good conductors. Hope that helped you.
Conductors all metals are btw
What will happen to the brightness of the lamp when the the slider is moved towards x
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The rheostat is used to kind of 'spread out' the battery voltage, you might say. It's like the whole battery voltage is spread out along the length of the rheostat, and you can connect to any point you want, from the negative side of the battery (Y) to the positive side (X), and every point in between, and you get whatever the voltage is at that particular point.
One side of the light bulb (and the voltmeter) is connected to the negative side of the battery, and you can't change that.
But the other side of the bulb (and the voltmeter) is connected to the slider, which can be slid anywhere between 'x' and 'y'.
When the slider is down at 'y', that's the negative side of the battery. So both sides of the lamp are connected to the same place, there's no voltage across the lamp, and it just sits there, cool and dark.
When the slider is all the way up at the 'x' end, that's the positive side of the battery. So the full battery voltage is connected across the lamp, and the lamp sparkles bright and hot.
When the slider is someplace in between, then only a part of the full battery voltage is across the lamp (and the voltmeter). The higher the slider is ... the closer it is to 'x' ... the more voltage there is across the lamp. The brighter the lamp shines, and the higher the voltmeter reads.