# Latihan Soal IPA Kelas 8 Semester 2

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| By Chanda.balo2121
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Chanda.balo2121
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• 1.

### Rumus hukum newton I adalah

• A.

ΣF = 5

• B.

ΣF = 0

• C.

ΣN = 0

• D.

ΣF = m.g

B. ΣF = 0
Explanation
The correct answer is ΣF = 0. This equation represents Newton's first law of motion, which states that an object at rest will stay at rest, and an object in motion will stay in motion with the same velocity, unless acted upon by an external force. When the sum of the forces acting on an object is zero (ΣF = 0), it means that the object is in equilibrium and its motion will not change.

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• 2.

### "percepatan yang dihasilkan gaya pada suatu benda sebanding dengan resultan gaya dan berbanding terbalik dengan massa benda." Merupakan bunyi dari hukum Newton ke ?

• A.

Hukum newton I

• B.

Hukum newton II

• C.

Hukum newton III

• D.

Hukum newton IV

B. Hukum newton II
Explanation
The given statement states that the acceleration produced by a force on an object is directly proportional to the resultant force and inversely proportional to the mass of the object. This is a description of Newton's second law of motion, which states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. Therefore, the correct answer is "Hukum newton II" or "Newton's second law of motion."

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• 3.

• A.

Energi tubuh

• B.

Energi listrik

• C.

Energi kimia

• D.

Energi panas

A. Energi tubuh
Explanation
The given question asks for an exception to the concept of energy. Energy tubuh (body energy) is not a recognized form of energy, unlike energy listrik (electric energy), energy kimia (chemical energy), and energy panas (heat energy), which are all well-established forms of energy.

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• 4.

### Rumus energi Potensial adalah ?

• A.

Ep = m × h

• B.

Ep = m × g × h

• C.

Ep = f × g × h

• D.

Ek = ½ × m × v

B. Ep = m × g × h
Explanation
The given formula for potential energy, Ep = m × g × h, is the correct answer. This formula represents the potential energy (Ep) of an object, which is equal to the mass (m) of the object multiplied by the acceleration due to gravity (g) and the height (h) of the object. This formula is derived from the basic principles of potential energy and is widely used in physics to calculate the potential energy of objects in various situations.

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• 5.

### Energi yang dimiliki benda karena kelajuannya disebut energi ?

• A.

Energi Potensial

• B.

Energi panas

• C.

Energi kelajuan

• D.

Energi Kinetik

A. Energi Potensial
Explanation
The correct answer is "Energi Potensial". Energi potensial adalah energi yang dimiliki oleh benda karena posisi atau keadaannya. Ketika benda berada pada posisi tertentu, energi potensialnya akan meningkat.

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• 6.

### Rumus dari daya adalah ?

• A.

P = W x t x f

• B.

P = W x t

• C.

P = W / t

• D.

P = W x s

C. P = W / t
Explanation
The formula for power (P) is obtained by dividing work (W) by time (t). This equation represents the rate at which work is done or the amount of work done per unit of time. The division of work by time gives the power output, which indicates how quickly work is being done. Therefore, P = W / t is the correct formula for power.

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• 7.

### Simpangan terjauh disebut ?

• A.

Amplitudo

• B.

Periode

• C.

Frekuensi

• D.

Getaran

A. Amplitudo
Explanation
The correct answer is Amplitudo. Amplitudo refers to the maximum displacement of an oscillating object from its equilibrium position. It measures the extent or magnitude of the oscillation. In other words, it represents the distance between the highest and lowest points of the wave or vibration.

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• 8.

### Frekuensi Bunyi audio sonik adalah ?

• A.

>200.000.000 Hz

• B.

> 20.000 Hz

• C.

• D.

20 – 20.000 Hz.

D. 20 – 20.000 Hz.
Explanation
The correct answer is 20 - 20,000 Hz. This is because the frequency range of audio sonics, or sound waves, is typically measured in hertz (Hz). The human ear is capable of hearing sounds within this frequency range, which spans from the lower limit of 20 Hz to the upper limit of 20,000 Hz.

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• 9.

### Bunyi yang frekuensinya tak teratur disebut ?

• A.

• B.

Dentum

• C.

Desah

• D.

Gaung

C. Desah
Explanation
Desah refers to a sound that has irregular frequency. It is often associated with a sighing or exhaling sound. The other options, Nada, Dentum, and Gaung, do not specifically refer to sounds with irregular frequencies.

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• 10.

### Bunyi pantul dibedakan menjadi ?

• A.

Gaung dan Gema

• B.

• C.

• D.

Desah dan Gema

A. Gaung dan Gema
Explanation
The correct answer is "Gaung dan Gema" because both terms refer to the phenomenon of sound reflection. "Gaung" specifically refers to the reflection of sound waves from a large surface or in a large space, resulting in a prolonged and distinct echo. "Gema" refers to the reflection of sound waves from multiple surfaces, causing a repetition or reverberation of the original sound. Both terms describe the reflection of sound, distinguishing them from the other options that do not involve sound reflection.

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• Current Version
• Aug 22, 2023
Quiz Edited by
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• Mar 07, 2015
Quiz Created by
Chanda.balo2121