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3 years ago

HELP ASAPP!!!

Physics

1 answer:

likoan [24]3 years ago

3 0

For a balanced reaction equation, the number of atoms on each side of the reaction equation must be the same.

From the equation shown in question 4 , there will be an extra molecule of O2 left over because the number of atoms of each element on the right hand side of the reaction equation must be the same as the number of atoms of the same element on the left hand side of the reaction equation. This is what makes a balanced reaction equation.

The procedure that could be used to demonstrate that matter is conversed during a physical change is to find the mass of a piece of ice, let the ice melt then find the mass of the liquid water.

In the reaction; 2KCl + Br2 ------> 2KBr + Cl2, there are six atoms present in the product according to the balanced reaction equation shown.

Learn more: brainly.com/question/9743981

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In a two-source circuit, one source acting alone produces 10 ma through a given branch. the other source acting alone produces 8

pashok25 [27]

Refer to the figure below.
R = resistance.

Case 1:
The voltage source is V₁ and the current is 10 mA. Therefore
V₁ = (10 mA)R

Case 2:
The voltage source is V₂ and the current is 8 mA. Therefore
V₂ = (8 mA)R

Case 3:
The voltage across the resistance is V₁ - V₂. Therefore the current I is given by
V₁ - V₂ = IR
10R - 8R = (I mA)R
2 = I
The current is 2 mA.

Answer: 2 mA

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3 years ago

How would you find kinetic energy?

Flura [38]

Answer:

Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v2. If the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

Explanation:

6 0

2 years ago

Read 2 more answers

Prove law of conservation of momentum ,??

ziro4ka [17]

Explanation:

$\law \: of \: conservation \: of \: momentum)$

$\frac{initial}{m1u1 + m2u2} = \frac{fi}{m 2u2}$

<h3>BEFORE COLLISION)  INITIAL MOM. OF BODY A </h3>

PiA = m1u1

After collision) .................. B I. e piB = m2u2

<h2>FINÅL MOMENTUM OF BØDY A I. e PfA= m1v1</h2>

FINAL .......... B I. e PfB = m2v2

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7 0

3 years ago

What subatomic particle determines the identity of an element

FinnZ [79.3K]

Answer:

Proton

Explanation:

Proton is a subatomic particle and determines the identity of an element. each element is identified by its atomic number. In an element, the number of protons in the nuclei of the atoms of the element is same as the atomic number of that element and this number is different for each element. for example, Boron has 5 protons in its nuclei, hence the atomic number of the element is 5.

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3 years ago

The magnitude of the electric current is directly proportional to the _____________ of the electric field.

Harlamova29_29 [7]

The magnitude of the electric current is directly proportional to the "Electric Charge" of the electric field.

Hope this helps!

7 0

3 years ago