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Dafna1 [17]
3 years ago
5

How many stars are in the universe (approximately)? O 40 sixtillion 0 365 billion O 86.4 million O one​

Physics
1 answer:
Annette [7]3 years ago
6 0

Answer:

a i belive

Explanation:

the univerce is VERY large so a, if im wrong i apologise :(

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A body of mass 50kg is placed on a wall of height 1.5m what is the potential energy​
DiKsa [7]

Answer:

PE=mgh

=50×1.5×9.8

=735

Explanation:

need thanks and make me brainiest if it helps you

8 0
3 years ago
What is Marie's velocity in section c<br> 0.86mi/min<br> 5mi/min<br> 0mi/mi <br> -5mi/min
Sergio [31]

Answer:

0.5mi/min

Explanation:

Velocity = change in distance/time taken

Velocity= (5-0)/(20-10)=5/10=0.5mi/min

4 0
3 years ago
How do you balance this equation Mg+ O2= MgO
Anuta_ua [19.1K]

Answer:

2 Mg(s) + O2(g) → 2 MgO(s)

As magnesium (Mg) has a valency of +2, and oxygen (O) has a valency of -2, the ratio would be 1:1, and magnesium oxide would be represented as MgO. It is insoluble in water, hence it has the subscript as a solid, represented by (s). In order to use up the diatomic oxygen (O2), there needs to be two moles of magnesium (2Mg) on the reactant side. This would produce 2 moles of MgO on the product side.

Explanation:

8 0
4 years ago
person holds a 0.300 kg pomegranate at the top of a tower that is 96 m high Another person holds a 0.800 kg melon next to an ope
hoa [83]

Well, for one thing, it could depend on which fruit is dropped first. You haven't mentioned that.

If they're both dropped at exactly the same time, then the melon at 32m hits the ground first.

It has nothing to do with their masses or weights. It's only a matter of which one has farther to fall. Even if it were a school-bus at 96m instead of a pomegranate, anything dropped from less than 96m would reach the ground in less time than the school-bus.

7 0
3 years ago
Which one of the following is not a simple machine
PilotLPTM [1.2K]

Answer:

4 electric pole is the answer.

3 0
3 years ago
Read 2 more answers
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