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Dmitriy789 [7]
3 years ago
13

A toy helicopter is flying straight ahead. A fan is blowing air toward the helicopter's right.

Chemistry
2 answers:
e-lub [12.9K]3 years ago
7 0

Answer:

D.) The direction of the helicopter's motion will change

Alex_Xolod [135]3 years ago
4 0

D.  the direction of the helicopter's motion will change

Explanation:

When the fan pushes on the helicopter to the right, the direction of the helicopter motion must change as it flies past it.

Since the problem suggest that the fan must push the helicopter towards the right, it will deviate from its course.

  • According to newton's first law of motion "an object will continue in its state of rest or uniform motion unless acted upon by an external force".
  • The external force on the helicopter is given by the blowing fan.
  • This force will change to flight path of the toy helicopter.

learn more:

Newton's law brainly.com/question/11411375

#learnwithBrainly

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PLEASE ANSWER
vodka [1.7K]

Answer:

  • <u><em>B. Negative association</em></u>

<u><em></em></u>

Explanation:

<em>Negative association</em> is when the independent and dependent variables move in opposite directions: if the dependent variable increases, the independent variable decreases, and if the dependent variable decreases, the independent variable increases.

As you see in the diagram, as you move to the right on the horizontal axis, meaning that the independent variable is increasing, the points lie lower, meaning that the independent variable decreases.

Therefore, if you draw a line of best fit, it will have a negative slope. A negative slope indicates <em>negative association.</em>

The graph certainly shows association as there is a clear trend; else the points would be randomly dispersded.

7 0
3 years ago
Balance this equation<br> _Al +_HCI --&gt; _H2 +_AICIz
kumpel [21]

2Al+6HCl⇒3H₂+2AlCl₃

<h3>Further explanation </h3>

Equalization of chemical reaction equations can be done using variables. Steps in equalizing the reaction equation:  

• 1. gives a coefficient on substances involved in the equation of reaction such as a, b, or c etc.  

• 2. make an equation based on the similarity of the number of atoms where the number of atoms = coefficient × index between reactant and product  

• 3. Select the coefficient of the substance with the most complex chemical formula equal to 1  

Reaction

Al+HCl⇒H₂+AlCl₃

  • Give coefficient

aAl+bHCl⇒cH₂+AlCl₃

  • Make equation

Al, left=a, right=1⇒a=1

Cl, left=b, right=3⇒b=3

H, left=b, right=2c⇒b=2c⇒3=2c⇒c=3/2

the equation becomes :

Al+3HCl⇒3/2H₂+AlCl₃ x2

2Al+6HCl⇒3H₂+2AlCl₃

5 0
2 years ago
Which kind of covalent bond has unequal sharing of electrons
lutik1710 [3]

Polar.

Polar bonds have unequal sharing electrons while nonpolar, the opposite, has equal sharing electrons. This is a tactic typically used to determine whether or not a compound or element itself is polar or nonpolar.

Hope this helps!

7 0
3 years ago
Read 2 more answers
What is true about the number of water particles in the pot after the water has been warmed?
Elza [17]

Answer:ye

Explanation:

8 0
3 years ago
At chemical equilibrium the amount of blank because
Norma-Jean [14]

Answer:

In a chemical reaction, chemical equilibrium is the state in which the forward reaction rate and the reverse reaction rate are equal. The result of this equilibrium is that the concentrations of the reactants and the products do not change.

Explanation:

5 0
3 years ago
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