Which statement is true because of newtons second law ?a)when the net force on an object increases, the objects acceleration decreases
b)when the net force on an object decreases ,the objects acceleration increases
c)when the net force on an object decreases, the acceleration doesnt change
d)when the net force on an object decreases, the objects acceleration decreases

Answers

Answer 1

Answer: Newton's second law, by definition, states that, The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object. Therefore, based on the given options above, the correct answer would be option D: when the net force on an object decreases, the objects acceleration decreases.

Answer 2

Answer:

d. when the net force on an object decreases, the objects acceleration decreases

i took the test and got it right

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Primary alcohols can be dehydrated to produce A) ethers B) organic acids C) esters D) aldehydes

Answers

Primary alcohols can be dehydrated to produce ethers. The correct option is A, ethers.

What is dehydration?

Dehydration reaction are those reactions in which there is loss of water. When aldehyde reacts with sulfuric acid, it forms alkenes with loss of water, in excess of acids.

When aldehyde reacts with acids, with excess of aldehyde, forms ether.

Thus, the correct option is A) ethers.

Learn more about alcohol

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They form alkenes, not sure what group that falls under but B,C, and D definitely cant be the answer

1. The following reaction does not proceed to form a product: H2O + Au---> no reaction. Why is that?A) Gold has a higher activity than hydrogen and cannot replace it.
B) Gold has a lower activity than hydrogen and cannot replace it.
C) The reaction cannot occur because water is a reactant.
D) The reaction proceeds too slowly to create products.

2. Which of the following is the balanced form of the equation C2H6 + O2 --> CO2 + H2O?

answer choices are attached A,B,C,D top to bottom

3. The equation 2NaNO3 + CaCl2 ---> 2NaCl + Ca(NO3)2 is balanced. How many atoms of sodium (Na) are there on either side of the equation?

A) one
B) two
C) four
D) six

4. All single-displacement reactions can be classified as another type of reaction as well. What type of reaction is that?

A) combustion
B) redox
C) synthesis
D) decomposition

5. If ions change places and a gas is formed, then what type of reaction is indicated?

A) double-displacement
B) synthesis
C) decomposition
D) single-displacement

Answers

1. B
The positive charge in water is provided by hydrogen, and gold provides the same charge. However, gold is not more reactive than hydrogen so it can not replace it in the compound.

2. In order to balance the equation, you must sure there are equal moles of each element on the left and right side of the equation:
2C₂H₆ + 7O₂ → 4CO₂ + ₆H₂O

3. The number of moles of sodium atoms on the left of the equation must be equal to the number of moles of sodium atoms on the right, as per the law of conservation of mass. The answer is B.

4. C.
A synthesis reaction usually results from single displacement because some element or compound is produced in its pure form

5. B.
The gas being produced is being synthesized.

Knowledge of atomic structure has evolved over time. Thomson discovered that atoms contain electrons, Rutherford discovered that most of the mass of an atom is concentrated in its center, and Bohr discovered that electrons orbit the nucleus. Taken together, what do these discoveries demonstrate

Answers

J.J. Thompson's plum pudding model was devised after thediscovery of electron but before the discovery of the nucleus of the atom.Rutherford, who overturned Thompson's plum pudding model proposed that onhis experiment (Rutherford model) he discovered that the atom has a tiny, heavynucleus, which is named as nucleus of the atom. While the most important properties of atomic and molecular structure was explained using the simple [picture ofan atom called the Bohr Model. This model was proposed by Niels Bohr. He alsoconcluded that an atom is a small, positively charged nucleussurrounded by orbiting electrons. Thedifferent theories and discoveries by the great scientists mentioned abovedemonstrate the atomic model and composition of atoms.

Answer:

A. The cumulative nature of science.

Explanation:

In an exothermic reaction the bonding energy of the product is ?

Answers

In an exothermic reaction, heat is released. Heat released is determined by finding the difference of the total bonding energy of the product and the reactants. Since the heat released is negative, the bonding energy of the products should be greater than that of the reactants.

Why are protons in an atom so important? Question 5 options: A. Protons determine the atoms' identity (type of element) and where it is located on the periodic table. B. Protons are bigger than all the other particles in an atom. C. Protons determine an atom's chemical properties and how it will react with other elements. D. There are more protons than electrons or neutrons in a neutral atom.

Answers

Your answer is A my friend as the atomic number of an atom is determined by the number of protons

I would say option A

If you can’t get a reading on one object like the fish fossil , what else can you try? Determine the approximate age of the fish fossil and explain what you did to estimate the fossil age.

Answers

Answer:

Explanation:If you can't get a reading on a fish fossil, there are other methods you can try to determine its approximate age. Here's a step-by-step process to estimate the fossil age:

1. Relative Dating: Start by using the principles of relative dating. This method involves comparing the age of the fossil to the ages of other nearby fossils or rock layers. By studying the position of the fossil in the rock layers and the types of fossils found around it, you can make an estimate of its relative age.

2. Index Fossils: Look for index fossils, which are species that existed for a relatively short period of time but were widespread. By identifying an index fossil within the rock layers that contain the fish fossil, you can narrow down the possible time range during which the fish lived.

3. Radiometric Dating: If relative dating and index fossils don't provide a precise age estimate, you can turn to radiometric dating. This method involves measuring the decay of radioactive isotopes in the rock or fossil to determine its age. For example, you could analyze the ratio of parent isotopes to daughter isotopes in the fossil. By knowing the half-life of the radioactive isotope and the current ratio, you can calculate the approximate age.

4. Carbon-14 Dating: If the fish fossil is relatively recent (less than 50,000 years old), carbon-14 dating can be used. This method relies on the decay of carbon-14, a radioactive isotope found in living organisms. By measuring the amount of carbon-14 remaining in the fossil, you can estimate its age.

5. Other Methods: If all else fails, there are other techniques that paleontologists may use to estimate fossil age, such as studying the fossil's morphology, comparing it to known fossil records, or analyzing the chemical composition of the surrounding rocks.

Remember that estimating the age of a fossil is not always a straightforward process, and different methods can provide different ranges of accuracy. It's important to consider multiple lines of evidence and consult with experts in the field to obtain the most accurate estimate possible.

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