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expeople1 [14]
3 years ago
12

Describe 2 ways in which a giant boulder by the ocean may change over time.

Physics
1 answer:
Monica [59]3 years ago
8 0

Answer:

I'm not sure if they're right but...

1. It would erode because of the water

2. It would probably become a home for the ocean creatures

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Five reneweable energy resources are wind, sunlight, moving water and geothermal energy.
ad-work [718]

Answer:

True

Explanation:

Any energy that is made by the sun or any other energy maker, would be renewable energy because it can be reproduced in 100 years or less.

5 0
3 years ago
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Some magnets have just one pole <br> Truth or false ?
leva [86]
False

-A magnet can never have one pole, even a simple magnet was cut, each end would have an opposite south(-) or north(+) pull.
-This is the result of moving electrons
3 0
3 years ago
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How does your power output in climbing the stairs compare to the power output of a 100-watt light bulb? if your power could have
cricket20 [7]
1) Assuming an adult person has an average mass of m=80 kg, and assuming it takes about 30 seconds to climb 5 meters of stairs, the energy used by the person is
E=mgh=(80 kg)(9.81 m/s^2)(5 m)=3924 J
So the power output is 
P= \frac{E}{t}= \frac{3924 J}{30 s} \sim 130 W

And since the estimate we made is very rough, we can say that the power output of the person is comparable to the power output of the light bulb of 100 W.

2) Based on the results we found in the previous part of the exercise, since the power output of the person is comparable to the power output of 1 light bulb of 100 W, we can say that the person could have kept burning only one 100-W light bulb during the climb.
6 0
2 years ago
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The area of the united states that has the highest level of average daily solar radiation by month would be
Vlada [557]
The area of the United States that has the highest level of Average Daily Solar radiation by month would be:

A) the Gulf Coast.
B) the Great Lakes.
C) the Southwest.
<span>D) the Pacific Northwest.

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7 0
3 years ago
1. A uniform magnetic field is directed vertically upwards. In which direction in this field should an alpha particle be project
max2010maxim [7]

Answer:

1. Fleming's left hand rule

2. It must be projected towards the east

Explanation:

Fleming's left-hand rule states that; When a current-carrying conductor is placed in an external magnetic field, the conductor experiences a force perpendicular to both the field and to the direction of the current flow. This rule was first put forward by John Ambrose Fleming in the later part of the nineteenth century.

Hence if the thumb, fore finger and middle finger of the lefthand are held mutually at right angles to each other; the thumb shows the direction of motion, the fore finger shows the direction of the field while the middle finger shows the direction of the current.

Hence, if the alpha particle is projected eastwards(at right angles) to the uniform magnetic field, it will be deflected southwards in the magnetic field.

3 0
3 years ago
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