PHYSICS HIGH SCHOOL

The multiple reflection of a single sound wave is a/ana. echo.
b. reverberation.
c. refraction.
d. diffraction.

Answers

Answer 1
Answer: A single reflection, like shouting at the side of a mountain and hearing 
your voice come back to you, is an 'echo'.

Multiple reflection, like clapping your hands once inside a large room, 
is 'reverberation'.

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Two objects, Object A and Object B, need to be identified. Object A's index of refraction is determined to be 1.77, and Object B's index of refraction is determined to be 1.333. Knowing this information, which of the following must be true? A. Light can pass through Object A faster than it can pass through Object B.B. The optical density of Object A is lower than the optical density of Object B. C. Light can pass through Object B faster than it can pass through Object A. D. The optical density of Object B is higher than the optical density of Object A.
According to universal gravitation, both mass and air resistance affect the gravitational attraction between objects

Elaborate on the reason(s) that matter is said to move even as in a solid state.A) The particles are bound through intermolecular forces but are able to move past each other with relative freedom.
B) The particles have sufficient energy to become an ionized gas and are in the most common state of matter in the universe.
C) The particles are not able to move out of their positions relative to one another, but do have small vibrational movements.
D) The particles are not bound to one another, move quickly, have a low density, and are able to spread apart from one another if unconstrained.


Brad and Matt are working in the lab. They noticed that when they mixed two dilute solutions together, the reaction between them happened very slowly. Which of Matt's suggestions would BEST help to increase the rate of this reaction?

A) increase the concentration of both solutions
B) decrease the concentration of both solutions
C) increase the concentration of one of the solutions
D) decrease the concentration of one of the solutions


Identify the correct order of increasing intermolecular force of attraction for the three most common states of matter.
A) liquid → solid → gas
B) solid → liquid → gas
C) gas → liquid → solid
D) gas → solid → liquid

Answers

1) The correct answer is
C) The particles are not able to move out of their positions relative to one another, but do have small vibrational movements.
In solids, in fact, particles are bound together so they cannot move freely. However, they can move around their fixed position with small vibrational movements, whose intensity depends on the temperature of the substance (the higher the temperature, the more intense the vibrations). For this reason, we say that matter moves also in solid state.

2)  The correct answer is
A) increase the concentration of both solutions
In fact, when we increase the concentration of both solutions, we increase the number of particles that react in both solutions; as a result, the speed of the reaction will increase.

3)  The correct answer is
C) gas → liquid → solid
In gases, in fact, particles are basically free to move, so the intermolecular forces of attraction are almost negligible. In liquids, particles are still able to move, however the intermolecular forces of attraction are stronger than in gases. Finally, in solids, particles are bound together, so they are not free to move and the intermolecular forces of attraction are very strong. 

What is used to create sounds of different pitches and tones by musicians?

Answers

The answer to the question that is being presented above would be musical instruments. These instruments are used to create sounds of different pitches and tones by musicians. They operate through being striked or 'sawed' to create vibrations that produce sound.

The mass of a star can be determined by studyinga. the wavelength of light emitted by the star.
b. the color of the star.
c. Kepler's laws.
d. binary star systems.

Answers

The correct answer for the question that is being presented above is this one: "a. the wavelength of light emitted by the star." The mass of a star can be determined by studying the wavelength of light emitted by the star. It also has something to do with the gravitational force that it exerts.

Answer:

D. Binary Star Systems

Explanation:

A body mass 30 kg is traveling in space at a speed of 10 m/s. Given that the formula for kinetic energyis KE = 0.5 * m * v^2, and m is mass, v is speed

Answers

The kinetic energy of a body with a mass of 30 kg and a speed of 10 m/s is  1500 kg m²/s².

In physics, the kinetic energy of аn object is the form of energy thаt it possesses due to its motion. In the case above, we are given the formula for kinetic energy:

KE = 0.5 * m * v²

where m is mass and v is speed. And we are given m = 30 kg and v = 10 m/s.

To calculate the kinetic energy, we simply plug in the values of m and v into the formula:

KE = 0.5 * 30 kg * (10 m/s)²

Simplifying the equation gives:

KE = 0.5 * 30 kg * 100 m²/s²

KE = 15 kg * 100 m²/s²

KE = 1500 kg m²/s²



Therefore, the kinetic energy of the body is 1500 kg m²/s².

For more information about kinetic energy refers to the link: brainly.com/question/26472013

#SPJ11

Answer:

The kinetic energy of a body mass of 30 kg traveling in space at a speed of 10 m/s can be calculated with the formula KE = 0.5 * m * v^2, where m is the mass of the body and v is the speed. In this case, the kinetic energy would be equal to 0.5 * 30 * 10^2 = 1500 Joules.

consider the following scenario: you live near the shoreline and hear a report that an earthquake hit the ocean floor near your location. your town may experience

Answers

Tsunamis because earthquakes caused in or near water and the energy creates massive waves

How does the current values in and out of the battery compare to the sum of currents going through the light bulbs?Note: This is for Parallel circuits.
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Answers

The current values in and out of the battery is going to be equal to the sum of the currents going through the light bulbs. In a parallel circuit, the current is divided as it enters different branches and light bulbs. However, the amount of current leaving the battery is always going to be the same as the amount of current entering the battery. Therefore, while current divides in a parallel circuit, the total amount of current always remains the same.
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