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777dan777 [17]
3 years ago
5

PLEASEE HELPP!! (look at picture)

Physics
2 answers:
Arisa [49]3 years ago
6 0
It makes like a little valcano so yeah
puteri [66]3 years ago
3 0

Answer:

volcano volcano volcano

volcano

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You lay a mirror flat on the floor with one edge against a wall and aim a laser at the mirror. The ray reflects from the mirror
joja [24]

Answer:

the angle of incidence θ is 45.56 º

Explanation:

Given data

strikes the mirror before wall x = 30.7 cm

reflected ray strikes the wall y =  30.1 cm

to find out

the angle of incidence θ

solution

let us consider ray is strike at angle  θ so after strike on surface ray strike to wall at angle 90 - θ

we will apply here right angle triangle rule that is

tan( 90 - θ) = y /x

tan( 90 - θ)  = 30.1 / 30.7

90 - θ = tan^-1 (30.1/30.7)

90 - θ = 44.4345

θ = 45.56 º

the angle of incidence θ is 45.56 º

4 0
3 years ago
hich one of the following statements could be an operational definition of electric current?View Available Hint(s)Which one of t
klemol [59]

Answer:

it is True as the operational definition of electric current.

Explanation:

The definition of electric current is

         I = dQ / dt

By convention the direction of the current is the direction in which a positive charge flows.

The initial expression is the derivative that is the change of the load in the unit of time and this occurs in a given cross-sectional cable.

The proposed definition is the same as this, so it is True as the operational definition of electric current.

8 0
3 years ago
What do scientists use to determine the temperature of a star? A. thermometer B. distance from Earth C. composition D. color
AysviL [449]

The answer is D. Color !

5 0
3 years ago
Read 2 more answers
To keep with the law of conservation of matter, determine the correct product for the following reaction:
user100 [1]

Answer:

B) PbI2 + 2 KCl

Explanation:

To keep the the law of conservation of matter, the equation given above must be balanced i.e the total element in the reactant must be equal to the total elements in the product.

Given the equation

PbCl2 (aq) + 2 KI (aq) →

At the reactant shown, there are one mole of lead Pb, 2 moles of chlorine Cl, 2moles of Potassium K and 2 moles of Iodine.

During reaction, the Chlorine atom will react with the potassium atom K and the lead atom Pb will react with the iodine atom.

The resulting product that will balance the chemical equation is

PbI2 + 2 KCl

The equation will then become

PbCl2 (aq) + 2 KI (aq) → PbI2 + 2 KCl

If we look at both sides of the equation, we will see that all the elements have the same number of atoms.

4 0
3 years ago
Read 2 more answers
Solving for acceleration,mass and net force
Dvinal [7]
The formulas are-

a=f/m
f=ma
m=f/a
5 0
2 years ago
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