If the distance between two objects doubles, the gravitational attraction between them becomes half.
Answer the following statement true (T) or false (F)
False
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A square plate has an area of 29.00 cm2 at 20.0°C. It will be used in a low temperature experiment at T = 10.0K where it must have an area of 28.00 cm2 . What area must be removed form the plate at 20.0°C for it to have the correct area at 10.0 K? (The coefficient of linear expansion is 10 × 10^?6 (°C)?1.)
a. 0.079 3 cm2 b. 0.159 cm2 c. 0.238 cm2 d. 0.841 cm2 e. 0.921 cm2
Three small objects are positioned as follows: the 2.0-kg object at (0.0 m, 0.0 m), the 2.0-kg object at (2.0 m, 0.0 m), and the 4.0-kg object at (2.0 m, 1.0 m). Determine the coordinates of the center of mass of this system
A) (0.50 m, 1.5 m) B) (1.5 m, 0.50 m) C) (2.5 m, 1.5 m) D) (2.5 m, 0.50 m)
A ball thrown upwards reaches a maximum height and then comes back down to the original level. As the ball is going downwards the velocity and acceleration both point down
a. True b. False Indicate whether the statement is true or false
The primary reason that very large nuclei are unstable is due to
A) the cumulative repulsive force of the protons. B) the cumulative attractive force between the protons and the orbiting electrons. C) the repulsive force between the neutrons and the protons. D) the extreme weakness of the gravitational attraction of the protons.