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76-physics-Question-physics-homework-help

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QUESTION 1

  1. Which of the following describes electromagnetic induction?

3 points

QUESTION 2

  1. Faraday’s Law states how voltage can be increased or decreased in a system.

2 points

QUESTION 3

  1. According to Faraday’s law, voltage cannot be changed by changing the magnetic field strength.

2 points

QUESTION 4

  1. According to Faraday’s law, voltage can be changed by changing the magnetic field strength.

2 points

QUESTION 5

  1. A step-down transformer has more loops on which coil?

3 points

QUESTION 6

  1. Which of the following is a type of generator in a car?
    alternator

3 points

QUESTION 7

  1. A generator produces _____________________.

3 points

QUESTION 8

  1. An electric motor converts electric energy into what type of energy?

3 points

QUESTION 9

  1. What is the concept called when the poles of an electromagnet flip?

3 points

QUESTION 10

  1. Increasing which of the following would increase the magnetic force between a permanent magnet and a coil?

3 points

QUESTION 11

  1. During electromagnetic induction, the faster the magnet moves, the more electrical energy (voltage) is created.

2 points

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QUESTION 1

  1. Which of the following statements is true about the nature of light?

3 points

QUESTION 2

  1. What type of particle is light made out of?

3 points

QUESTION 3

  1. Light is considered which of the following?

3 points

QUESTION 4

  1. Light can undergo refraction as seen in a pencil in a glass, diffraction as seen in a shadow, or polarization as seen in a 3D movie.

2 points

QUESTION 5

  1. The frequencies of visible light are the highest frequencies on the electromagnetic spectrum.

2 points

QUESTION 6

  1. On the electromagnetic spectrum, infrared light has a lower frequency than visible light, which has a lower frequency than ultraviolet light. This means that ultraviolet light is more energetic than both visible and infrared light.

2 points

QUESTION 7

  1. The longer the wavelength, the ____________ the energy of the light.

3 points

QUESTION 8

  1. Each color of visible light corresponds to a different

3 points

QUESTION 9

  1. White light is made up of which of the following?

3 points

QUESTION 10

  1. White light is

3 points

Click Save and Submit to save and submit. Click Save All Answers to save all answers.

QUESTION 1

  1. Which of the following statements is true about the nature of light?

3 points

QUESTION 2

  1. What type of particle is light made out of?

3 points

QUESTION 3

  1. Light is considered which of the following?

3 points

QUESTION 4

  1. Light can undergo refraction as seen in a pencil in a glass, diffraction as seen in a shadow, or polarization as seen in a 3D movie.

2 points

QUESTION 5

  1. The frequencies of visible light are the highest frequencies on the electromagnetic spectrum.

2 points

QUESTION 6

  1. On the electromagnetic spectrum, infrared light has a lower frequency than visible light, which has a lower frequency than ultraviolet light. This means that ultraviolet light is more energetic than both visible and infrared light.

2 points

QUESTION 7

  1. The longer the wavelength, the ____________ the energy of the light.

3 points

QUESTION 8

  1. Each color of visible light corresponds to a different

3 points

QUESTION 9

  1. White light is made up of which of the following?

3 points

QUESTION 10

  1. White light is

3 points

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QUESTION 1

  1. Which of the following represents a physical change to matter?

3 points

QUESTION 2

  1. In a chemical change, the substance that you end up with is the

3 points

QUESTION 3

  1. Consider the equation S + O2 → SO2. What is the product?

3 points

QUESTION 4

  1. In an exothermic reaction, energy in the form of ___________ may be released to the surroundings.

3 points

QUESTION 5

  1. Which of the following indicates that an exothermic reaction has taken place?

3 points

QUESTION 6

  1. During an endothermic reaction, energy is ________ the surroundings.

3 points

QUESTION 7

  1. Which of the following takes place during a synthesis reaction?

3 points

QUESTION 8

  1. The generalized equation AB → A + B represents a _________ reaction.

3 points

QUESTION 9

  1. Which of the following takes place during a double displacement reaction?

3 points

QUESTION 10

  1. Consider the equation 2KBr + Cl2 → KCl + Br2. What type of reaction is this?

3 points

QUESTION 11

  1. Which of the following is a synthesis reaction?

3 points

QUESTION 12

  1. When you balance a chemical reaction, you are making sure that the law of conservation of matter is obeyed.

2 points

QUESTION 13

  1. In an endothermic reaction, the amount of energy absorbed by the reaction must be equal to the amount of energy taken from the surroundings.

2 points

QUESTION 14

  1. All chemical reactions involve a transfer of energy.

2 points

QUESTION 15

  1. When chemical bonds are broken, energy is

3 points

QUESTION 16

  1. Suppose two chemicals are reacted together. It takes 1000 kJ of energy to break the bonds of the reactants and 85

     
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