470799
Pregunta 1
Pregunta
What is the kinetic energy of an 8 kg bird flying at 9 meters per second?
Respuesta
-
324 J
-
72 J
-
36 J
-
291 J
Pregunta 2
Pregunta
The mechanical energy (ME)=2500. At point B, the PE= _____________ and KE=______________.
Image:
ENERGY.PNG (image/PNG)
Respuesta
-
2500 J, 2500 J
-
2000 J, 500 J
-
1000 J, 1500 J
-
1250 J, 1250 J
Pregunta 3
Pregunta
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)
Respuesta
-
2500 J, 0 J
-
0 J, 2500 J
-
0 J, 0 J
-
1250 J, 1250 J
Pregunta 4
Pregunta
The mechanical energy (ME)=2500. At point C, the PE= _____________ and KE=______________.
Image:
ENERGY.PNG (image/PNG)
Respuesta
-
0 J, 2500 J
-
2500 J, 0 J
-
2490 J, 10 J
-
10 J, 2490 J
Pregunta 5
Pregunta
Paul pushes a box a distance 20 meters with 48 newtons. How much work is done?
Respuesta
-
1009 J
-
523 J
-
960 J
-
689 J
Pregunta 6
Pregunta
______________ is found in the mantle and moves plates.
Respuesta
-
Convection
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Radiation
-
Conduction
Pregunta 7
Pregunta
_______________ is used when a metal spoon is in hot tea.
Respuesta
-
Conduction
-
Radiation
-
Convection
Pregunta 8
Pregunta
_______________ is responsible for light coming from a bonfire.
Respuesta
-
Convection
-
Radiation
-
Conduction
Pregunta 9
Pregunta
Visible light waves are shorter than microwaves.
Respuesta
- True
- False
Pregunta 10
Pregunta
Gamma rays are higher frequency than Infared but are less dangerous.
Respuesta
- True
- False
Pregunta 11
Pregunta
Which of these is the order for the electromagnetic spectrum? *Abbreviation (Ex: R=Radio waves)*
Respuesta
-
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
Pregunta 12
Pregunta
How does the Doppler Effect help explain the Big Bang Theory?
Respuesta
-
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.
-
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.
Pregunta 13
Pregunta
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)
Respuesta
- True
- False
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