Answer:
The correct answer will be option-imaginative and original.
Explanation:
The study of any natural phenomenon is based on the methods developed by humans. These methods are known as scientific methods as they approach the explanation in a systematic way.
The quest to understand the astronomical perspective-universe, planets and the planetary motions began around 2500 years ago which persists even today.
To understand the solar system researcher has to be a keen observer, imaginative and truthful to the evidence and data recorded. The logical imagination is essential to study the solar system as one is not able to see the far objects. This practicality allowed the researcher to think and rethink over the laws governing the systems.
Thus, option-imaginative and original is the correct answer.
B. Electric potential in a rotating coil of wire creates a permanent magnet.
C. An electrical current causes a coil of wire to rotate in a magnetic field.
D. Forces from a permanent magnet allow a coil of wire to rotate.
Answer:
A. A magnet is rotated through a coil of wire to produce an electric current.
Explanation:
An electric generator works on the principle of Faraday's law of induction. As the magnetic flux linked with the coil changes, an emf is induced in the coil and current is produced.
An electric generator converts mechanical energy to electrical energy.
Thus, the correct statement that describes the an electric generator is: A. A magnet is rotated through a coil of wire to produce an electric current.
b. 440 V
c. 4,160 V
d. 69,000 V
Answer:
c. 4,160 V
Explanation:
Primary distribution voltage by electric utility company are often distributed around 3 Kv to 35 Kv, which would be a range between 3,000 V to 35,000 V because in order to be consumed by the public they use transformers to lower the voltage to less than 1Kv this can be used in domestic usage, so form the options the one that most likely would be used as a primary distribution voltage is 4,160 V.
The frequency of light for which the wavelength is is .
Further explanation:
The frequency is a measure of number of wave’s that passes through a fixed point or place in a given time interval. The S.I unit of frequency is Hertz .
Wavelength is defined as the distance between two successive crests or troughs of a travelling wave.
Examples of waves are sound wave, light wave, mechanical waves, surface waves etc.
Given:
The wavelength of the light used is .
The speed of the light is .
Concept:
Light is an electromagnetic wave which carries energy in the form of electric field and magnetic field. The speed of light in vacuum is .
The speed of light can be expressed in terms of wavelength of the light and the frequency of the light.
The speed of light is:
Rearrange the above expression.
…… (1)
Here, is the frequency of the light, is the speed of the light in vacuum and is the wavelength of the light.
Substitute for and for in equation (1).
Thus, the frequency of light for which the wavelength is is .
Learn More:
1. What is the threshold frequency ν0 of cesium? Note that 1 ev (electron volt)=1.60×10−19 j. brainly.com/question/6953278
2. Calculate the wavelength of an electron (m = 9.11 × 10-28 g) moving at 3.66 × 106 m/s brainly.com/question/1979815
3. What is the frequency of light for which the wavelength is 7.1 × 102 nm brainly.com/question/9559140
Answer Details:
Grade: High School
Subject: Physics
Chapter: Electromagnetic Waves
Keywords:
Frequency, light, wavelength, 420 nm, 4.20x10^-7 m, 7.14x10^14 Hz, vacuum, air, crests, troughs, sound wave, light wave, mechanical wave.
Ionic solids, such as sodium chloride and nickel oxide, are used as building materials due to their strong bond and high melting points. They are rigid and brittle but can conduct electricity when molten or dissolved.
Ionic solids, such as sodium chloride and nickel oxide, are used as building materials. These solids are composed of positive and negative ions held together by electrostatic attraction. They have high melting points, are rigid and brittle, and do not conduct electricity in their solid state.
However, they conduct electricity when molten or dissolved. Many simple compounds formed by the reaction of a metallic element with a nonmetallic element are ionic. These are crystalline compounds composed of positively charged ions and negatively charged ions held together by electrostatic forces. They have high melting points and are typically brittle.
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b. Circuit breaker
c. Fuse
d. Insulation