470799
Questão 1
Questão
What is the kinetic energy of an 8 kg bird flying at 9 meters per second?
Responda
-
324 J
-
72 J
-
36 J
-
291 J
Questão 2
Questão
The mechanical energy (ME)=2500. At point B, the PE= _____________ and KE=______________.
Image:
ENERGY.PNG (image/PNG)
Responda
-
2500 J, 2500 J
-
2000 J, 500 J
-
1000 J, 1500 J
-
1250 J, 1250 J
Questão 3
Questão
The mechanical energy (ME)=2500. At point A, the PE= _____________ and KE=______________. (*Point A is not on the ground, but near the ground.*)
Image:
ENERGY.PNG (image/PNG)
Responda
-
2500 J, 0 J
-
0 J, 2500 J
-
0 J, 0 J
-
1250 J, 1250 J
Questão 4
Questão
The mechanical energy (ME)=2500. At point C, the PE= _____________ and KE=______________.
Image:
ENERGY.PNG (image/PNG)
Responda
-
0 J, 2500 J
-
2500 J, 0 J
-
2490 J, 10 J
-
10 J, 2490 J
Questão 5
Questão
Paul pushes a box a distance 20 meters with 48 newtons. How much work is done?
Responda
-
1009 J
-
523 J
-
960 J
-
689 J
Questão 6
Questão
______________ is found in the mantle and moves plates.
Responda
-
Convection
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Radiation
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Conduction
Questão 7
Questão
_______________ is used when a metal spoon is in hot tea.
Responda
-
Conduction
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Radiation
-
Convection
Questão 8
Questão
_______________ is responsible for light coming from a bonfire.
Responda
-
Convection
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Radiation
-
Conduction
Questão 9
Questão
Visible light waves are shorter than microwaves.
Responda
- True
- False
Questão 10
Questão
Gamma rays are higher frequency than Infared but are less dangerous.
Responda
- True
- False
Questão 11
Questão
Which of these is the order for the electromagnetic spectrum? *Abbreviation (Ex: R=Radio waves)*
Responda
-
R-M-U-V-U-I-G
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R-I-M-V-U-X-G
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R-M-I-V-X-U-G
-
R-M-I-V-U-X-G
Questão 12
Questão
How does the Doppler Effect help explain the Big Bang Theory?
Responda
-
Big Bang Theory says the universe is expanding. All light seen from earth is blue shift and has longer wave lengths meaning that the object sending the light is moving away from us.
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Big Bang Theory says the universe is shrinking. All light seen from earth is blue shift and has longer wave lengths meaning that the object sending the light is moving away from us.
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Big Bang Theory says the universe is shrinking. All light seen from earth is red shift and has longer wave lengths meaning that the object sending the light is moving away from us.
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Big Bang Theory says the universe is expanding. All light seen from earth is red shift and has longer wave lengths meaning that the object sending the light is moving away from us.
Questão 13
Questão
An electromagnet is a magnet created when a circuit is closed, connecting a battery a wire and rapping it around an insulator.
Image:
electromagnetic (image/jpg)
Responda
- True
- False
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