Why does cupping your hand around your ear improve your hearing?

Answers

Answer 1

Answer: it allows your ears to receive more sound waves

Answer 2

Answer:

Answer:

Catch the wave.

The shape and curves are designed to capture sound waves from various directions and funnel them into the ear to start vibrating those ossicles. Cupping your hand behind the ear and pulling it forward makes sounds louder because your hand is snagging more sound waves.

Explanation:

It will receive more sounds

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A light bulb converts electrical energy into light energy and also some thermal energy. The amount of electrical energy is 50 Joules before the conversions.

Which of the following is an example of a compound C2, O2, He2, CO2?

Answers

Carbon dioxide is an example of a compound (CO2)

CO2 and He2 is an example of a compound. Anything that has only one type of atom is a molecule, and anything having more than one type of atom is a compound.

What is a Nuclei of uranium atoms split apart

Answers

This is probably referring to the process of nuclear fission.

Why is the specific heat capacity of the human body close to, but somewhat less than, that of water?

Answers

Answer:

Because most of the human body (about 70% of it) consists of water

Explanation:

The main reason why the specific heat capacity of the human body is very close to that of water is that water makes approximately 70% of the substances of which the human body consists. However, the human body has a slightly smaller specific heat capacity than water, because it contains also other elements/substances, and since water is one of the substances with the higher specific heat capacity at all, the specific heat capacity of the body is a bit smaller.

Any notable feature of an organism is called

Answers

Character trait, physical trait, or an appearance.

Question 2How do an ionic bond and a covalent bond differ?

A. An ionic bond is an attraction between oppositely charged ions. A covalent bond is a sharing of electrons between atoms.

B. A covalent bond is an attraction between oppositely charged ions. An ionic bond is a sharing of electrons between atoms.

C. There is no difference. Both an ionic bond and a covalent bond share electrons.

D. There is no difference. Both an ionic bond and a covalent bond are attractions between oppositely charged ions.

Question 3

What is a bond between a positive and a negative ion called?

A. covalent bond

B. ionic bond

C. metallic bond

D. polar bond

Question 4

Water (H2O) is composed of the same elements as hydrogen peroxide (H2O2). Why do these substances have different properties?

A.The atoms are arranged differently in each molecule.

B. The molecules are the same.

C. The atoms are the same.

D.Water has more atoms than hydrogen peroxide.

Question 5

What is the definition of a chemical bond?

A. a mutual attraction between the nuclei and electrons in two different atoms

B. a mutual attraction between the nuclei and electrons in a single atom

C. a mutual repulsion between the nuclei and electrons in two different atoms

D. a mutual repulsion between the nuclei and electrons in a single atom

Answers

2.(A)These two opposite ions attract each other and form the ionic bond.Covalent bonding is a form of chemical bonding between two non metallic atoms which is characterized by the sharing of pairs of electronsbetween atoms and other covalent bonds

A 1 kg ball is thrown into the air with an initial velocity of 30 m/s. How much kinetic energy does the ball have?

Answers

Kinetic Energy = (1/2)mv²

m = 1kg, v = 30m/s

Kinetic Energy = (1/2) * 1 * 30 * 30 = 450 J

Answer: 450 J

Explanation:

Kinetic Energy = 1/2 × mass × velocity²

Kinetic Energy = 1/2 × 1.0 Kg × 30 m/s²

Kinetic Energy = 1/2 × 1.0 Kg × 900

Kinetic Energy = 450 J

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