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Lesechka [4]
3 years ago
15

The chemical equation below shows that hydrogen and oxygen chemically react to form water.

Physics
2 answers:
shutvik [7]3 years ago
7 0

Answer:

D

Explanation:

Hydrogen, oxygen, and water are pure substances that each have different properties.

Although the 3 of them are pure substances, but they nonetheless have different properties. These properties could either be their physical properties, or their chemical properties. This is particularly so because since Oxygen and Hydrogen the major components in water have different properties, it is only right if their product, water, has different properties also.

Elena-2011 [213]3 years ago
7 0

Answer:

D

Explanation:

got it right on study island

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Se llama ángulo de incidencia -i- el formado por el rayo incidente y la normal. La normal es una recta imaginaria perpendicular a la superficie de separación de los dos medios en el punto de contacto del rayo. El ángulo de reflexión -r- es el formado por el rayo reflejado y la normal.

6 0
4 years ago
A 60kg student is sitting in a chair and is not moving. what is the force of a student acting on the chair? what is the force of
vazorg [7]

The force with which the student is acting in the chair and the force of the chair acting on the student is 588 N

Explanation:

  • There are two kinds of forces acting on you when you are sitting on the chair, they are the gravitational force and the force exerted by the chair on you.
  • The forces acting on the chair when you are sitting are the gravitational force and the force exerted by you.
  • As per  Newton's third law of motion, for every action, there is an equal and opposite reaction.
  • Hence, F = ma

        that is, F = 60 * 9.8

                       =588 N

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7 0
3 years ago
Suppose you take two non-zero displacements represented by vectors A & B.The magnitude of A is 5 m and the magnitude of B is
olga55 [171]

Answer:

a. When the total displacement is -(A + B)

b. A + B = 1 m or -(A + B) = -11 m

c. 0 m

Explanation:

a. Under what circumstances can you end up back at your starting point?

If we have the displacement A and displacement B. The total displacement is A + B. We would end up at the starting point if we take a displacement -(A + B) from point B

b. What is the magnitude of the largest displacement you can end up from the starting point?

The maximum displacement we can obtain is when A and B are in the same direction. So A + B = 5 m + 6 m = 11 m or -A - B = -(A + B) = -11 m.

c. When A and B are perpendicular, what is the component of B in the direction of A?

Since A is perpendicular to B, the angle between A and B is 90°

So the component of B in A,s direction is Bcos90° = B × 0 = 0 m

8 0
3 years ago
QUESTION 3Plasticity refers to the:A.fact that many academic fields contribute data to the science of development.B.ability of h
Solnce55 [7]

Answer:

B.ability of human traits to be molded during development.

Explanation:

Plasticity:

 1.When pressure is applied then some deformation occurs and to retain this deformation is known as plasticity.

2. It is the capacity of molding

Plasticity refers to the ability of human traits to be molded during development.

So the option B is correct.

B.ability of human traits to be molded during development.

6 0
3 years ago
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