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Elodia [21]
4 years ago
12

HELP PLEASE

Physics
1 answer:
lisov135 [29]4 years ago
8 0

Answer: Hope this Helps...

Explanation:

Force may be defined as the cause of motion and deformation. When a force is applied to an object, the object either moves or changes shape or both. In most cases, it is not possible to detect the deformation by naked eyes at the molecular or atomic level. Deformation occurs no matter how small.

For example, a car moving along a straight and horizontal highway, experiences an engine force Fe, while being opposed by an overall frictional force, Ff ( road friction as well as air resistance). If the car is moving to the right and to the right is taken to be the positive direction, then Fe acts to the right and Ff acts to the left. The net force is ΣF = Fe - Ff .

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(1.) When aqueous solutions of Fe(NO3)3 and NaOH are mixed, Fe(OH)3 and NaNO3 are formed. is there a precipitate formed? if yes,
andriy [413]

From the solubility rules, both reactions 1 and 2 lead to precipitates.

<h3>What is a precipitate?</h3>

The term precipitate refers to the solid that separates out of the reaction mixture . We know that the solubility of a substance in water is predicated on the solubility rules.

1) The reaction here is;

Fe(NO3)3(aq) +  3NaOH(aq) ------> Fe(OH)3(s) + 3NaNO3(aq) - The precipitate is  Fe(OH)3 because only the hydroxides of group 1 elements are soluble in water.

2) The reaction is;

Pb(NO3)2(aq) + 2KI(aq) ----->PbI2(s) + 2NaNO3(aq) - The precipitate is PbI2 because most iodides are soluble except the iodides of  Ag+, Hg+2, and Pb+2

Complete Ionic equation;

Pb^2+(aq) + 2NO3^-(aq) + 2K^+(aq) + 2I^-(aq) ------> PbI2(s) +  2NO3^-(aq) + 2K^+(aq)

Net ionic equation;

Pb^2+(aq) + 2I^-(aq) ------> PbI2(s)

Learn more about the solubility rules:brainly.com/question/12978582

##SPJ1

4 0
2 years ago
15 pointsss please help meeeeeeeeeee
AveGali [126]
A. Acceleration! ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ
5 0
3 years ago
Read 2 more answers
A rock is thrown from a bridge at an angle 30∘ below horizontal.immediately after the rock is released, is the magnitude of its
Wittaler [7]
<span>The magnitude of the rock is equal to g. After the rock is released, there are no more forces acting on it, yet gravity remains. The initial inputs, on a bridge, at an angle of 30 deg below horizontal do not matter after the release.</span>
4 0
4 years ago
A meat baster consists of a squeeze bulb attached to a plastic tube. When the bulb is squeezed and released, with the open end o
Misha Larkins [42]

Answer:P_{bulb}=99.11\ kPa

Explanation:

Given

When the bulb is squeezed then liquid level rises to height h i.e. pressure decreases inside the bulb which causes rises in the tube

for common elevation i.e. at liquid level pressure must be equal therefore

P_{bulb}+\rho gh=P_{atm}

P_{bulb}=1.013\times 10^5-1490\times 9.8\times h

for h=0.15\ m

P_{bulb}=1.013\times 10^5-1490\times 9.8\times 0.15

P_{bulb}=101.3\times 10^3-2.1903\times 10^3

P_{bulb}=99.11\ kPa

for h=0.1\ m

P_{bulb}=101.3\times 10^3-1.4602\times 10^3  

P_{bulb}=99.83\ kPa

8 0
3 years ago
Please help!!<br><br> please answer if you know any of them!
PSYCHO15rus [73]

Answer:

5. 343j

Explanation:

6 0
3 years ago
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