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Ipatiy [6.2K]
3 years ago
10

Help please it's a test

Physics
2 answers:
UNO [17]3 years ago
7 0
Unbalanced. _______ and not equal.  in not sure about the 2nd choice from the info im looking at. the balanced version is 2NaOH<span> + </span><span>H2SO4</span><span> = </span><span>Na2SO4</span><span> + </span>2<span>H2O
(i hope this helps a little)</span>
kobusy [5.1K]3 years ago
6 0

The equation is unbalanced because the number of hydrogen atoms and oxygen atoms is not equal in the reactants and the products

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In what scientific study did scientists discover that when atoms split they _________.
Shtirlitz [24]

Answer:OOF

Explanation:

6 0
3 years ago
A friend claims that there are just two forms of energy: kinetic energy and gravitational potential energy. What is wrong with y
Oksanka [162]

Answer:

D

Explanation:

There is a variety of many types of energies. Some of which are mechanical, thermal, electromagnetic, nuclear, chemical, sonic, and more.

7 0
3 years ago
Bose-Einstein Condensate can be defined by Group of answer choices slowly vibrating molecules all possibilities listed are corre
deff fn [24]

Answer:

The correct option is;

Absolute zero

Explanation:

A Bose-Einstein condensate is known as the fifth state of matter which is made of a collection of ultra cooled atoms (at almost absolute zero degrees -273.15 °C) such that the there is very slight free energy within the atoms which results in almost no relative motion between the atoms. The atoms then combine forming clumps such that phenomena usually observed at the microscopic level such as wavefunction interference become observable at the microscopic level.

4 0
2 years ago
Extinction of a species is most likely to occur as a result of __________.
sergejj [24]
Extinction of a species is most likely to occur as a result of "<span>environmental changes"

In short, Your Answer would be Option D

Hope this helps!</span>
8 0
3 years ago
Read 2 more answers
An archer defending a castle is on an 15.5 m high wall. He shoots an arrow straight down at 22.8 m/s. How much time does it take
kodGreya [7K]

Answer:

  about 602 milliseconds

Explanation:

The motion can be approximated by the equation ...

  y = -4.9t^2 -22.8t +15.5

where t is the time since the arrow was released, and y is the distance above the ground.

When y=0, the arrow has hit the ground.

Using the quadratic formula, we find ...

  t = (-(-22.8) ± √((-22.8)^2 -4(-4.9)(15.5)))/(2(-4.9))

  = (22.8 ± √823.64)/(-9.8)

The positive solution is ...

  t ≈ 0.60195193

It takes about 602 milliseconds for the arrow to reach the ground.

8 0
3 years ago
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