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Edexcel | Physics 4PH0 | W 17 1 | Q8

W 17 1
8
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This question is about planets in the solar system.

 

W 17 1
8
(a)
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Planets in the solar system have different sizes and masses.

  The bar chart shows the gravitational field strength of each planet compared to Earth.

 

W 17 1
8
(a) (I)
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1 Mark

Which of these statements is correct?

   A A 1 kg mass would weigh more on Venus than on Neptune

   B A 1 kg mass would weigh more on Earth than on Uranus

   C A 1 kg mass would weigh more on Mercury than on Saturn

   D A 1 kg mass would weigh more on Mars than on Jupiter

B       a 1 kg mass would weigh more on

Earth than on Uranus;

 

W 17 1
8
(a) (II)
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1 Mark

On Earth, the gravitational field strength is 10 N/kg.

   Which of these is the value for the gravitational field strength on Mars?

   A  0.04 N/kg

   B  0.4 N/kg

   C  4 N/kg

   D 25 N/kg

C      4 N/kg; 

W 17 1
8
(b)
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Deimos is a natural satellite of Mars.

  Deimos has an orbital time period of 1820 minutes and an orbital speed of 1350 m/s.

 

W 17 1
8
(b) (I)
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4 Mark s

Calculate the orbital radius of Deimos.

 

orbital radius = ............................................. m

   

 

conversion into s; 

substitution into correct equation (no

mark for equation);

rearrangement;

evaluation;

e.g.

 

factor of 60 seen

23 462 621(m)

POT error loses one

mark

391 000 gains 3 marks 

 

 

W 17 1
8
(b) (II)
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1 Mark

The diagram shows Deimos in orbit around Mars.

   Which arrow shows the direction of the force of gravity that Mars exerts on Deimos?

 

   A

   B

   C

   D

 

 A  

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