a ball is rolling across the floor.How could you apply an unbalanced force to change the speed or direction of the ball?

Answers

Answer 1

Answer:

Usually a ball would roll toward the side that's lower, so if you had a ramp and put it on the side that was lower, then the ball would change direction and go the opposite direction

Answer 2

Answer: Kick the ball! The force of the kick likely isn't the same amount of force acting on the ball as it's rolling, so as long as the kick makes the ball go faster (or slower) than it had been, that force is unbalanced

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Why are some examples of a chemical reaction not actually foolproof evidence that of a chemical reaction?13, 8th grade, and I'm doing my science lab report: The lab was a chemistry lab. We got a bunch of toxic chemicals and put pairs of them together, recorded the reactions, and wrote balanced equations for each of them and identified what kind of reaction they were. The whole name of the lab is "Evidence of Chemical Reactions", and one of the first analysis questions is "write a paragraph about the kinds of changes you would expect to see if a chemical reaction occurs." I answered this with things like bubble formation, change of color, change of state of matter, etc. Then the next question said "any one of these signs is not always a fool proof indication that a chemical reaction is occurring. give two examples to support this statement." what are two examples to support the statement that the commonly known examples of chemical reactions occurring are not always foolproof evidence that chemical reactions are occurring?
What would be an example of a land form from magma?A.Hot springsB.Lava PlateauC.Dome MountainsD.Shield Mountains

Name three types of bodies in the solar system

Answers

Sun, the plants, dwarf plants. you could also say gas giants.

Planets,stars, moons and a lot of more bodies in the solar system

A 3.90L sample of gas at STP is cooled to -55oC at 808mmHg. What is the new volume?

Answers

Answer:

3.72L

Explanation:

Given parameters:

Initial volume V₁ = 3.9L

Condition = STP

Final temperature T₂ = -550°C

Final pressure P₂ = 880mmHg

Unknown:

Final volume V₂ = ?

Solution.

At standard temperature and pressure(STP), the:

Pressure = 1atm = 760mmHg

Temperature = 273K

Therefore, P₁ = 760mmHg

T₁ = 273K

The general gas law, is best to solve this problem. It is mathematically given as:

$(P_(1) V_(1) )/(T_(1) ) = (P_(2) V_(2) )/(T_(2) )$

Let us take the units to the appropriate one;

-550°C = 273 + (-550) = -277K

Input the variables;

$(760 x 3.9)/(273) = (808 x V_(2) )/(-277)$

V₂ = 3.72L

Why are fungi more closely related to animals than they are to plants? A. animals and fungi are both autotrophs, while plants are heterotrophs
B. animals and fungi are both heterotrophs, while fungi are autotrophs
C. fungi and animals are both heterotrophs, while plants are autotrophs
D. fungi and plants are both autotrophs, while animals are heterotrophs

Answers

the answer maybe B or A

KyTe + Fe(HCO3)2 ------> KHCO, + Fete
how do you balance the equation?

Answers

Answer:

You make each side equal to the other by muktiplying it by a number and yiu keep that number on each side. Hope this helps. :]

Explanation:

The type of graph that’s most useful for showing how one variable changes in response to another variable is called a _____?

Answers

The type of graph that’s most useful for showing how one variable changes in response to another variable is called a line graph. A line graph is used when you have one independent and one dependent variable. Usually, the independent variable is assigned to the x-axis, while the dependent variable is assigned to the y-axis.

What causes matter to exist in three different states

Answers

NOT 100% SURE

Thermal Energy..?

When I think of three states of matter I think of water as an example:

• Adding extreme heat to the liquid form of water can turn it into gas.

• Adding heat to ice can turn it into the liquid form of water.

• Freezing the liquid form of water can turn it into ice.

I would say temperature (thermal energy) has an effect of the different states of matter.

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An element contains only one kind of A.) particle.B.) propertyC.) proteinD.) raw material

What is the ratio of atoms in carbon dioxide , or CO2

Which volume is the smallest?A. One milliliterB. One deciliterC. One literD. One microliter