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

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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

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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 850 kJ of energy are released by the formation of the products. What is the change in energy for the reaction?

3 points

QUESTION 17

  1. A carbon to carbon bond has a bond enthalpy value of 348 kJ. Which of the following must happen to form a carbon to carbon bond?

3 points

QUESTION 18

  1. How many total oxygen (O) atoms are present in the reactants side of the equation C2H5OH + 3O2 → 2CO2 + 3H2O?

3 points

QUESTION 19

  1. How many total oxygen (O) atoms are present in the products side of the equation C2H5OH + 3O2 → 2CO2 + 3H2O?

3 points

QUESTION 20

  1. How many total carbon (C) atoms are present in the reactants side of the equation C2H5OH + 3O2 → 2CO2 + 3H2O?

3 points

QUESTION 21

  1. Which number should be placed in the blank to balance the equation? Xe + ___F2 → XeF2.

3 points

QUESTION 22

  1. In the chemical formula 2NO2, how many atoms of oxygen (O) are there?

3 points

QUESTION 23

  1. In the chemical formula CH4, how many atoms of carbon (C) are there?

3 points

QUESTION 24

  1. In nuclear fission, atomic nuclei are

3 points

QUESTION 25

  1. Nuclear fusion can be found__________, and it _________ technologically feasible for commercial power production.

3 points

QUESTION 26

  1. In a nuclear power plant, the chain reaction takes place within the

3 points

QUESTION 27

  1. Which type of nuclear reaction is used in commercial power plants?

3 points

QUESTION 28

  1. In a nuclear power plant, uranium is burned to make energy for creating electricity.

2 points

QUESTION 29

  1. The half-life of an isotope is the time it takes for ________ of the original material to decay.

3 points

QUESTION 30

  1. Which of the following are emitted during radioactive decay?

3 points

QUESTION 31

  1. Suppose a half-life of an isotope is 30 seconds and you have 10 grams to start with; after one minute you should have 2.5 grams of the original material left.

2 points

QUESTION 32

  1. Transuranic waste comes mostly from

3 points

QUESTION 33

  1. Which type of nuclear waste can be disposed of in a landfill?

3 points

QUESTION 34

  1. We have plentiful supplies of nuclear fuel and nuclear power could extend our fossil fuel supply.

2 points

QUESTION 35

  1. Uranium mining is not very disruptive of the land, and therefore nuclear power is much more desirable than coal mining.

2 points

QUESTION 36

  1. A major advantage of nuclear power is that it has no harmful waste products.

2 points

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QUESTION 1

  1. Which country had the first human in space?

3 points

QUESTION 2

  1. Which country put the first dog in space?

3 points

QUESTION 3

  1. Space exploration began around 1940 and continues today.

2 points

QUESTION 4

  1. Why did the US put a person on the moon?

3 points

QUESTION 5

  1. The greatest disadvantage to exploring space is the possibility of losing human life.

2 points

QUESTION 6

  1. Although space exploration is dangerous, some people argue that it satisfies our natural curiosity about where we live.

2 points

QUESTION 7

  1. Which of the following is a key component of the U.S. Space Shuttle program?

3 points

QUESTION 8

  1. The scientists on the International Space Station study biology, physics, astronomy, meteorology, and the long-term exposure effects of space on the human body.

2 points

QUESTION 9

  1. How long would it probably take to make a manned trip to Mars?

3 points

QUESTION 10

  1. When an astronaut returns to Earth after going to Mars, she may not be healthy enough to do anything.

2 points

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Explanation & Answer

Hello!Attached is the complete work on your assignment.If you need any editing ,please feel free to contact me.Thank you.

Hello. The bolded alternatives are the answers. There was a repeated section of the same section
that I have bolded and italic for you so that you can confirm.
QUESTION 1
Which of the following describes electromagnetic induction?
using a magnet to create an electric current
moving a loop of wire through a magnetic field to create an electric current
using a magnetic pole to create an electric current
using magnetic properties to create an electric current
QUESTION 2
Faraday's Law states how voltage can be increased or decreased in a system.
True
False
QUESTION 3
According to Faraday's law, voltage cannot be changed by changing the magnetic field
strength.
True
False
QUESTION 4
According to Faraday's law, voltage can be changed by changing the magnetic field strength.
True
False
QUESTION 5
A step-down transformer has more loops on which coil?
primary coil
secondary coil
neither
both
QUESTION 6
Which of the following is a type of generator in a car?
alternator
engine
transmission
battery
QUESTION 7
A generator produces _____________________.
alternating current
resistance
a change in domains
steam
QUESTION 8
An electric motor converts electric energy into what type of energy?
potential
thermal
magnetic
mechanical

QUESTION 9
What is the concept called when the poles of an electromagnet flip?
switching poles
changing direction
current
transformer
QUESTION 10
Increasing which of the following would increase the magnetic force between a permanent
magnet and a coil?
transformer
circuit
current
generator
QUESTION 11
During electromagnetic induction, the faster the magnet moves, the more electrical energy
(voltage) is created.
True
False
Click Save and Submit to save and submit. Click Save All Answers to save all answers.
QUESTION 1
Which of the following statements is true about the nature of light?
Light behaves entirely as a particle
Light has properties of both particles and waves
Light behaves entirely as a wave
Light travels as a wave but does not carry energy
QUESTION 2
What type of particle is light made out of?
polarizing particle
photon particle
alpha particle
ultraviolet particle
QUESTION 3
Light is considered which of the following?
a transverse wave
an electromagnetic wave
both a wave and a particle
all of the above
QUESTION 4
Light can undergo refraction as seen in a pencil in a glass, diff...


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