Flashcards
Learning Activity 4.2
Flashcards do conjunto (6)
- 12. The gravitational field constant on the surface of Pluto is 0.31 N / kg. What would the gravitational force be on a person of mass 50.0 kg on Pluto?Fg = m g = 50.0 x 0.31 = 15.5 = =16 N
- 23. A space traveler whose mass is 115 kg leaves earth. What are is weight and mass on a) earth and b) in interplanetary space where there are no nearby planetary objects?a) 1127 N and 115 kg
b) 0 N and 115 kg - 34. Describe two methods by which the gravitational field intensity can be measured here at the surface of the earth.1. Drop an object and measure it's acceleration. The acceleration due to gravity will be equal to the gravitational field intensity.
2. Take a known mass. Find the weight of this mass on a scale. Then g = Fg (weight) / m - 45. What are two factors that affect the gravitational field intensity at the surface of the earth? How does each factor affect the value of the gravitational field intensity?The two factors are latitude and altitude. If latitude is kept constant, then as altitude increases the gravitational field intensity decreases. If altitude is kept constant, then as latitude increases the gravitational field intensity increases.
- 56. Distinguish between the terms: field, gravitational field, and gravitational field intensity.A field is a property of a space. A mass influences the space around it setting up the field. In turn the field exerts a force on other masses located within it.
A gravitational field is the region in space around a mass where another mass experiences a gravitational force.
Gravitational field intensity is a measure of the strength of the gravitational field. It is calculated as the force of gravity acting on a unit mass. Its unit is N / kg. - 67. State two facts about the gravitational field that are given by a diagram of gravitational field lines.a) Where the gravitational field lines are closer together the gravitational field intensity is larger.
b) If the gravitational field line is curved, the gravitational force acting on a mass at that point in space will be in the direction of the tangent line.
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- High School Diploma Science (Physics) FlashCards sobre Learning Activity 4.2, criado por Charles Lahaie em 16-03-2016.
- Criado por
- Charles Lahaie
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