What is the polarity of each of the earths magnetic poles ? Explain you answer

Answers

Answer 1

Answer:

Answer:

When you put un-like poles together (South facing North) you can feel magnetic attraction. In the Northern Hemisphere, your compass needle points North, but if you think about it for a moment, you will discover that the magnetic pole in the Earth's Northern Hemisphere has to be a South polarity.

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When using a moveable pulley to lift an object, _______ of the object's weight is supported by the section of rope attached to the ceiling. This is why a moveable pulley requires _______ effort force than a fixed pulley to lift an object. A. half, less B. all, less C. half, more D. all, more

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Answer:

UGHH IT WAS HALF AND LESS OMG :(

Explanation:

How are kyanite crystals formed

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It occurs as detrital grains in sedimentary rocks. It forms under extreme pressure.

When a speeding truck hits a stationary car, the car is deformed and heat is generated. What can you say about the kinetic energy of the system after the collision?

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I can say that the kinetic energy after the collision is less than it was before the collision. I can say this with confidence because you've said that some energy was used to deform the car, plus there was energy lost from the system in the form of heat.

Answer:

B. The kinetic energy of the system is partially used for deforming the car.

Explanation:

For Plato users!

A train travels 225 kilometers in 2.5 hours. What is the train’s average speed?

Answers

the train travells at he speed of 225 km/2.5h
now
225km=225000m
2.5 hr=150min=9000s
=>avg sp of train is=225000/9000s=25m/s

Answer:

562.5

Explanation:

a child riding a bicycle at 15 m/s decelerate at the rate of 3.0 meters per second squared for 4.0 seconds. what is the child's speed at the end of the 4.0 seconds?

Answers

3m/ $s^(2)$ of deceleration for 4 seconds.
3 x 4 = 12
15 - 12 = 3
The child will be riding a bicycle at 3m/s after 4 seconds.

If you want a full equation (which you might not):
let a be acceleration rate, Vf be final velocity, Vi as initial velocity, and t as time.
a = (Vf - Vi)/t
let's fill in everything we know now:

-3 = (Vf - 15)/4
now let's solve for Vf

-3 = Vf/4 - 15/4
-Vf/4 = 3 - 15/4
Vf/4 = -3 + 15/4
Vf = -12 + 15
Vf = 3

Therefore, final velocity is 3m/ $s^(2)$

What does Dependent viable meaning in science

Answers

Its the variable which you measure in an experiment. For example, you're conducting an experiment in order to find out how proportions of water affect plant growth, then, your dependent variable should be the height of the plants in the experiment.

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