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2 years ago

6

Please Help! The thing is in the photo.

1 answer:

ivolga24 [154]2 years ago

5 0

The reaction 4Al + 3O₂ → 2Al₂O₃ is a synthesis or also called combination reaction because reactants combine to produce a new compound (Option 2).

<h3>What is a synthesis combination reaction?</h3>

In chemistry, a synthesis or combination reaction is any type of chemical reaction in which two or more molecules called reactants combine to produce one or more molecules called products of such reaction.

Therefore, with this data, we can see that a synthesis or combination reaction is a chemical process where two or more molecules combine to produce a new molecule known as a product.

Learn more about synthesis combination reactions here:

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Which type of land usage would increase as the population increases?

raketka [301]

Answer:

If the population were to INCREASE land use would also INCREASE, if the human population DECREASED so would land use because there wouldn’t be as many people to using it. hope i helped

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3 years ago

The magnetic field at the earth's surface can vary in response to solar activity. During one intense solar storm, the vertical c

Natalka [10]

Answer:

$EMF = 1684.67 Volts$

Explanation:

As we know that EMF is induced in a closed conducting loop if the flux linked with the loop is changing with time

So we can say

$EMF = \frac{d\phi}{dt}$

now we have

$\phi = BA$

here since magnetic field is constant so we have

$EMF = A\frac{dB}{dt}$

now we have

$A = (190 \times 10^3)(190 \times 10^3)$

$A = 3.61 \times 10^{10} m^2$

now we have

$EMF = 3.61\times 10^{10} (\frac{2.8 \times 10^{-6}T}{60 s})$

$EMF = 1684.67 Volts$

6 0

3 years ago

A chair of weight 80.0 N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F =

Kaylis [27]

The chair does not move along the vertical direction: this means that the net force on the vertical direction is zero.

There are three forces acting along the vertical direction:

- The weight, acting downward: $W=mg=80.0 N$

- The component of the force F perpendicular to the floor, acting downward: $F_y = F sin 43.0^{\circ}=(44.0 N)(sin 43.0^{\circ})=30.0 N$

- The normal force N, acting upwards.

Since the net force must be zero, we have:

$W+F_y-N=0$

From which we can find the value of N:

$N=W+F_y=80.0 N+30.0 N=110.0 N$

3 0

4 years ago

Read 2 more answers

Im building a car in a vidio game and i need a scetch of trophy truck suspention if you dont know dont answer

Leviafan [203]

Answer:

if i could, i would draw one....What is your email??

Explanation:

3 0

3 years ago

A boat having a length 3m and breadth 2m is floating on a

brilliants [131]

Answer:

60 kg

Explanation:

The man's weight is equal to the weight of the water he displaces.

mg = ρVg

m = ρV

m = (1000 kg/m³) (3 m × 2 m × 0.01 m)

m = 60 kg

The man's mass is 60 kg.

3 0

3 years ago