Which of the following use or consist of permanent magnets:
A. lodestones
B. transformers
C. compasses
D. earphones
Give this one a try later!
A) lodestones, C) compasses, D) Earphones
,Better motors and earphones have recently been made possible by
A. stronger magnets
B. wires with less resistance
C. higher voltage batteries
D. using light rather than electricity
Give this one a try later!
A. stronger magnets
Which of these countries has released the most carbon dioxide into the atmosphere
since 1970 through man-made uses:
A) United States
B) Russia
C) India
D) China
E) Saudi Arabia
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A) United States
What discovery now allows for headphones to be small and light:
A) dynamos
B) rare-earth magnets, such as samarium cobalt
C) transformers
D) maraging steel
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, B) Rare-earth magnets, such as samarium cobalt
Edison wanted
A. a power plant on every city block
B. high-voltage DC
C. alternating current
D. to abolish the electric chair
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A. a power plant on every city block
The slowest earthquake wave is the
A. L wave
B. S wave
C. P wave
D. they all travel at the same speed
Give this one a try later!
A. L wave
Which of the following statements was true about Project Mogul
A. it was concerned with the atmosphere
B. it resulted in the first nuclear bomb
C. it led to the discovery of nuclear fission
D. it involved the invention of integrated circuits
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, A. it was concerned with the atmosphere
Sound tends to bend towards the side with
A. colder air
B. warmer air
C. denser air
D. less dense air
Give this one a try later!
A. colder air
Tesla wanted to use a transformer to distribute electricity because:
A) It allowed there to be a power plant in every neighborhood
B) It made high voltage less dangerous
C) It decreased the current going through long wires to reduce the loss of electricity
D) It was given strong support by Thomas Edison who popularized it
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C) It decreased the current going through long wires to reduce the loss of
electricity
During the past few years, which of these countries released the most carbon dioxide
per year into the atmosphere through man-made uses:
A) United States
B) Russia
C) India
A. lodestones
B. transformers
C. compasses
D. earphones
Give this one a try later!
A) lodestones, C) compasses, D) Earphones
,Better motors and earphones have recently been made possible by
A. stronger magnets
B. wires with less resistance
C. higher voltage batteries
D. using light rather than electricity
Give this one a try later!
A. stronger magnets
Which of these countries has released the most carbon dioxide into the atmosphere
since 1970 through man-made uses:
A) United States
B) Russia
C) India
D) China
E) Saudi Arabia
Give this one a try later!
A) United States
What discovery now allows for headphones to be small and light:
A) dynamos
B) rare-earth magnets, such as samarium cobalt
C) transformers
D) maraging steel
Give this one a try later!
, B) Rare-earth magnets, such as samarium cobalt
Edison wanted
A. a power plant on every city block
B. high-voltage DC
C. alternating current
D. to abolish the electric chair
Give this one a try later!
A. a power plant on every city block
The slowest earthquake wave is the
A. L wave
B. S wave
C. P wave
D. they all travel at the same speed
Give this one a try later!
A. L wave
Which of the following statements was true about Project Mogul
A. it was concerned with the atmosphere
B. it resulted in the first nuclear bomb
C. it led to the discovery of nuclear fission
D. it involved the invention of integrated circuits
Give this one a try later!
, A. it was concerned with the atmosphere
Sound tends to bend towards the side with
A. colder air
B. warmer air
C. denser air
D. less dense air
Give this one a try later!
A. colder air
Tesla wanted to use a transformer to distribute electricity because:
A) It allowed there to be a power plant in every neighborhood
B) It made high voltage less dangerous
C) It decreased the current going through long wires to reduce the loss of electricity
D) It was given strong support by Thomas Edison who popularized it
Give this one a try later!
C) It decreased the current going through long wires to reduce the loss of
electricity
During the past few years, which of these countries released the most carbon dioxide
per year into the atmosphere through man-made uses:
A) United States
B) Russia
C) India
