CHEMISTRY MIDDLE SCHOOL

when acceleration is held constant and objects of different mass are observed,are mass and force directly proportional or inversely proportional?Explain.

Answers

Answer 1
Answer: Yes. When two things are directly prortional, that means that as one increases, the other increases at the same rate. So, say you have a 2kg object at an acceleration of 2m/s^2. The force would be 4N. If you have a 3kg object at an acceleration of 2m/s^2, the force would be 6N. If two things are inversely proportional, that means that as one thing increases the other decreases at the same rate. A good example of this is in a chemical reaction. If you increase the surface area of the reactants, the reaction time decreases. They are inversely proportional.

Related Questions

after a fire, the ashes have less mass and take up less space than the trees and vegataion before the fire. how can this be explained in terms of the Law of Conservation of mass?
How can understanding change of state help you to seprate a salt water solution
A white powder is added to a solution. The images show observations made before the powder is added, just after the powder has been added, and a little while later. (The liquid in the small beaker is phenol red solution.) What evidence shows that a chemical change has taken place?
Describe the movement of air when you inhale
Which is the best example of immiscible liquids?

How does heavy water behave compared to normal water

Answers

You see, heavy water has much more mass. So it is heavier than the normal water
Virtual Smiles...

~Mqddie S.

Answer:

the phosphate head mixes with water ;the fatty acid tails do not

Explanation:

A group of students performed an experiment to prove the law of conservation of energy. In the experiment, a flask containing water at room temperature was shaken vigorously for a few minutes. The table shows a partial record of the temperature of the water before and after shaking.Experimental Record
Temperature
Before Shaking 20 °C
After Shaking Unknown
What best predicts the unknown temperature? (3 points)

a. Less than 20 °C because the total energy of the system after shaking is lower

b. Greater than 20 °C because the total energy of the system after shaking is higher

c. Less than 20 °C, because the mechanical energy from shaking transforms to thermal energy

d. Greater than 20 °C, because the mechanical energy from shaking transforms to thermal energy

Answers

Answer: The most accurate answer is Option D.

Explanation: It's actually 22 degrees. Energy cannot be created of destroyed, but transferred and transformed to one form or another. The movement of the container, mechanical energy was transferred to the water, as heat energy. Therefore is raised the water temperatures slightly.
In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. Energy can neither be created nor destroyed; rather, it can only be transformed or transferred from one form to another.

Jane is on a merry-go-round that is moving at a constant speed. Her velocity is also constant.True
False

Answers

the correct answer is False.

What effect does an atibiotic have on an infection like strep throat ?

Answers

Keeps infection from spreading
I think that it kills the virus

Look at the diagram below.The diagram on the left represents ______. The diagram on the right represents ______.
A.
the specific heat of a system; the heat of vaporization of a liquid
B.
the release of heat by a system; the absorption of heat by a system
C.
the absorption of heat by a system; the release of heat by a system
D.
the heat of vaporization of a liquid; the specific heat of a system

Answers

Answer:

So the one with the arrow going IN to the cylinder will be an absorption of heat. The arrow going outwards will be a release of heat

Explanation:

Answer:

There is no diagram! :(

Explanation:

A 2-kg bowling ball is 2.5 meters off the ground on a post when it falls. Just before it reaches the ground, it is traveling 7 m/s. Assuming that there is no air resistance, which statement is true?The initial potential energy is less than the final kinetic energy.

The intial potential energy is greater than the final kinetic energy.

The mechanical energy is conserved.

The mechanical energy is not conserved.

Answers

Answer: The correct answer is option "The mechanical energy is conserved".

Explanation:

Mechanical energy = Kinetic energy + Potential Energy

Mechanical energy of the body is defined a sum of potential energy and kinetic energy possessed by the body in motion. It is the energy associated with position and motion of the body.

The principle of Conservation of Mechanical Energy states that the mechanical energy of the body remains constant as long as the forces acting on the body are conservative forces.

From, this we can say that mechanical energy of the bowling ball with mass of 2 kg falling at speed of 4.4 m/s will remain conserved.

Hence,the correct answer is "The mechanical energy is conserved".

The answer to your question would be The mechanical energy is conserved. I just took the test and it was right.
Other Questions
When Kay added 30 g of hydrochloric acid (HCl) to 65 g of Zn, bubbles appeared and a white precipitate, zinc chloride (ZnCl2) was produced. She found that the mass of the zinc chloride was 93 g. Since the Law of Conservation of Matter stated that matter can't be created or destroyed, she was puzzled about the difference in mass. What is the best explanation for the missing 2 g?A) 2 g of zinc disappeared. B) 2 g of hydrogen gas were produced. C) Kay didn't correctly mass the precipitate. D) Kay didn't collect all of the precipitate.
A positive ion has moreA. protons than electrons B. electrons than protons C. neutrons than protons
A glass laboratory flask is filled with gas at 24 ∘C and 0.95 atm pressure, sealed, and then heated to 104 ∘C. What is the pressure inside the flask?
Give the systematic name for this coordination compound [Cr(H2O)4Cl2]ClO3