Gravitational Physics Quiz

What are the most general coordinate transformations used in Einstein's Special Relativity theory?

• Laplace transformations

• Lorentz transformations

• Poincare transformations

• None of the above

Gravitation is considered as a fundamental physical interaction which belongs to the category of

• Long-range interaction

• Strong interaction

• Electro-weak interaction

• Short-range interaction

The definition of gravitational field strength is:

• The region of space surrounding a body where other bodies will feel an attractive force due to it.
• The region of space surrounding a body where other bodies will feel an repulsive force due to it.
• The region of space surrounding a charge where other charges will feel an attractive force due to it.
• The region of space surrounding a charge where other charges will feel an repulsive force due to it.

The orbit of Halley's comet around the Sun is a long thin ellipse. At its aphelion (point farthest from the Sun), the comet is 5.3 x 10¹² m from the Sun and moves with a speed of 10.0 km/s. What is the comet's speed at its perihelion (closest approach to the Sun) where its distance from the Sun is 8.9 x 10¹⁰ m. The mass of the Sun is 1.989 x 10³⁰ kg.

• 55 km/s

• 11 km/s

• 22.5 km/s

• 110 km/s

What would the gravitational force be between the Sun and Mars if they were 2.3*10¹¹ m apart? The masses for the Sun and Jupiter are 1.99*10³⁰ kg and 6.42*10²³kg, respectively.

• F_g = 3.8*10¹⁵ N

• F_g = 2.8*10^-42 N

• F_g = 1.6*10²¹ N

• F_g = 4.6*10^-75 N

Equivalence of the gravitational mass and the inertial mass implies the validity of which of the following statements?

• Matter warps geometry

• Matter curves geometry

• Geometry embeds matter

• Matter embeds geometry