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Murljashka [212]
4 years ago
13

Unlike a scientific theory, a scientific hypothesis describes an observed pattern in nature without attempting to explain it. Pl

ease select the best answer from the choices provided TRUE OR FALSE
Physics
2 answers:
antiseptic1488 [7]4 years ago
6 0
FALSE, a hypothesis REQUIRES an observed pattern in nautre, WITH attempting to explain.
nordsb [41]4 years ago
5 0

Answer:

The answer is False

Explanation:

Hypothesis is the step of the scientific method in which a researcher generates an opinion based on the observation of some nature event and after having asked a question about it. This hypothesis must always be experienced and demonstrated to be able to know its truth, otherwise the researcher must plan a new hypothesis, which must also be experienced and demonstrated before drawing final conclusions.

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I need question 5 please and correct any others if they’re wrong
Kryger [21]
The resistance would increase.
8 0
3 years ago
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Which of the following metals reacts with oxygen and acids but is not very reactive with water?
Lina20 [59]

Calcium is reactive with oxygen, acid, and water. Copper is not reactive with water as well as with acids, whereas magnesium is reactive with acid but reactive with water.

<h3>What is a Chemical Reaction?</h3>

One or more chemicals (the reactants) are changed into one or more other compounds during a chemical reaction (the products).Substances are made up of chemical components or chemical elements.

Each calcium atom donates a pair of electrons to an oxygen atom during the interaction between calcium and oxygen to create calcium oxide.

When calcium reacts with hydrochloric acid, it releases bubbles of hydrogen gas, and when large chunks of calcium react with hydrochloric acid, it releases hydrogen gas. Calcium in reaction with water produces calcium hydroxide and hydrogen gas

When magnesium and oxygen interact, they produce light that is so strong that it temporarily impairs your vision. Magnesium burns so brilliantly because it produces a lot of heat while doing so.

Magnesium reacts with hot water or water vapor to produce hydrogen gas and magnesium hydroxide.

Acid does not react with copper. Metals such as lead, copper, silver, and gold do not react with water at all.

To get more info about the chemical reaction:

brainly.com/question/3461108

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7 0
2 years ago
A cheerleader lifts his 59.6 kg partner straight up off the ground a distance of 0.749 m before
Airida [17]

m = mass of the partner which the cheerleader lifts = 59.6 kg

h = height to which the partner is lifted by the cheerleader = 0.749 m

g = acceleration due to gravity = 9.8 m/s²

work done by the cheerleader in lifting the partner is same as the potential energy gained by the partner.

W = work done by the cheerleader in lifting the partner

PE = potential energy gained

so  W = PE

potential energy is given as

PE = mgh

hence

W = mgh

inserting the values in the above formula

W = 59.6 x 9.8 x 0.749

W = 437.5 J

this is the work done in lifting the partner once.

the cheerleader does this 30 times , hence the total work done is given as

W' = 30 W

W' = 30 x 437.5

W' = 13125 J


5 0
4 years ago
What happens to a current when the electric field in the wire increase
Gnom [1K]

Answer:

If the voltage is increased then the electric field is higher, and electron velocity (average) is proportional to this field. Then you have an increase in speed. And current is total charge passing per time unit, so current is proportional to velocity value of charge (and to voltage in resistors and wire).

Explanation:

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4 years ago
Who's Madame Marie curie?​
frozen [14]

Explanation:

In 1911, Marie was awarded a second Nobel Prize in Chemistry for her discovery of the elements polonium and radium. In honor of the 100-year anniversary of her Nobel award, 2011 was declared the "International Year of Chemistry."

6 0
3 years ago
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