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LenaWriter [7]
3 years ago
12

URGENT! Please define these, and give an example.

Physics
1 answer:
adelina 88 [10]3 years ago
6 0

Testable: Able to be tested or tried.

<em>ex. An example of a testable hypothesis is, Students who attend class more have higher grades, while those who skip have lower grades. </em>

Data: Data is the items of information that represent our analyze, or our findings in an experiment.

<em>ex. An example of Data, is the results of information collected for a research paper.</em>

Evidence: Evidence is information that helps show whether a proposed idea is valid.

<em>ex. We can use evidence to help support our point and strengthen our findings with reasoning.</em>

Theory: Theory is an explanation of something in the natural world that can be tested and gives us the same results each time. A proven hypothesis.

<em>ex. Examples of scientific theories are gravitation, evolution, and plate tectonics. </em>

Hypothesis: A hypothesis is a theory or question that can be tested through study and experimentation. It has more reasoning to it than a simple guess, but not enough information to be a theory.

<em>ex. An example of a possible hypothesis is, If we play music while working on homework, the participant's perfomance will increase.</em>

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The correctly balanced equation for H2O2 → H2O + O2 is
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Answer:2H2O2 → 2H2O + O2

Explanation:

For a chemical equation to be balanced, the number of moles of each element at the reactant must be equal to that of the product.

According to the equation given

H2O2 → H2O + O2

There are two hydrogen atoms with two oxygen atoms at the reactant and 2hydrogen and 3oxygen at the product which shows the equation is not balanced. To balance this,

We will add 2 moles to H2O2 at the reactant and 2 moles to H2O at the product to give;

2H2O2 → 2H2O + O2 (Balanced equation)

As we can see that we now have 4 moles of Hydrogen and 4 moles of oxygen at both reactant and product making the equation balanced.

8 0
3 years ago
a stone is dropped from a bridge and hits the pavement below in 2 seconds. what is the velocity of the stone when it hits the pa
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Well gravity is 9.8m/s so i would assume 19.6m/2 is the velocity
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3 years ago
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For the graph above, what is the independent variable? What is the dependant variable?
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3 years ago
1. A plane flying a triangular patter flies 150 km[N], then 400 km(E). What is the total displacement of the
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Answer:

1. The displacement is 427.2 km.

Explanation:

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