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frutty [35]
3 years ago
5

If humans originated in Africa and migrated to other parts of the world some time would be required for this to occur.At the mod

est rate of one kilometer per year, how many centuries would it take for humans originated in Africa to travel to China, some 10,000 kilometers away? ​
Physics
1 answer:
Thepotemich [5.8K]3 years ago
7 0

Answer:

100 years

Explanation:

10,000 divided by 100 equals 100

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Student 1 lifts a box with a force of 500 N and sets it on a tabletop 1.2 m high. Student 2 pushes an identical box up a 5 m ram
Troyanec [42]

The student who did the most work is student 2 with 2500 Joules.

<u>Given the following data:</u>

  • Force 1 = 500 Newton
  • Distance 1 = 1.2 meter
  • Force 2 = 500 Newton
  • Distance 2 = 5 meter

To determine which of the students did the most work:

Mathematically, the work done by an object is given by the formula;

Work\;done = Force \times distance

<u>For </u><u>student 1</u><u>:</u>

Work\;done = 500 \times 1.2

Work done = 600 Joules

<u>For </u><u>student 2</u><u>:</u>

Work\;done = 500 \times 5

Work done = 2500 Joules.

Therefore, the student who did the most work is student 2 with 2500 Joules.

Read more: Read more: brainly.com/question/13818347

7 0
3 years ago
Read 2 more answers
An electrical device in which a long wire is wound into a succession of closely spaced loops around a n insulating core is calle
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Solenoid I think.

Explanation:

6 0
3 years ago
A 946.4 kg ( 2083 lb ) car is moving at 14.8 m / s ( 33.0 mph ) . Calculate the magnitude of its momentum.
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14009. 72 kgms^-1

Explanation:

Momentum is the product of an objects mass and velocity

7 0
4 years ago
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