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Tcecarenko [31]
3 years ago
6

Need help true or false ? ECON

Physics
1 answer:
uranmaximum [27]3 years ago
3 0

Answer:

2:TRUE

3:FALSE

4:TRUE

5:FALSE

6:TRUE

7:FALSE

8:FALSE

9:FALSE

10:FALSE

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Many scientists accept a theory about the origin of the universe, called the big bang theory. describe at least one piece of sci
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2 years ago
Jeff is a landscaping contractor and lifts a rock weighing 600 pounds by wedging a board under the rock. Jeff weighs 150 pounds
jonny [76]

Answer: 4

The mechanical advantage is the ratio of the force exerted  by the object to the force applied to do work on it.

Here, Jeff tried to lift a rock weighing 600 pounds by wedging board under the rock. Jeff who weighs 150 pounds uses all his weight to exert force on lever and lift rock.

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Therefore, the mechanical advantage that lever provided to Jeff in lifting rock is 4.

6 0
3 years ago
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What is the difference between the number of electrons in an atom of selenium, Se, and the number of electrons in an atom of alu
Oxana [17]
Well, electrons can be converted into a atomic number so if SE atomic number is 34 that means it has 34 electrons. AI has a atomic number of 13 meaning it has 13 electrons.

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Hope this helped. :D
4 0
3 years ago
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A type of friction that occurs when air pushes against a moving object causing it to negatively accelerate
Romashka [77]

Answer:

Air resistance

Answer B is correct

Explanation:

The friction that occurs when air pushes against a moving object causing it to negatively accelerate is called as air resistance.

hope this helps

brainliest appreciated

good luck! have a nice day!

6 0
3 years ago
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