The "normal" eye has a near point of 25 cm. If a given individual's near point is 73 cm, for what problem will the eye doctor prescribe correction?
a. myopia
b. presbyopia
c. hyperopia
d. astigmatism
e. color blindness
c
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Applications to Astronomy: A white dwarf star with a mass equal to that of the sun is about the size of
A. the sun. B. the earth. C. a basketball. D. a proton.
Gravitational waves that carry energy and angular momentum away from the system cause white dwarfs to gradually spiral in toward each other and merge
Indicate whether the statement is true or false
A very dense 1500-kg point object (
A) and a dense 1200-kg point object (B) are held in place 1.00 m apart on a frictionless table. A third point object is placed between the other two at a point that is 20.0 cm from B along the line connecting A and B. When the third object is suddenly released, find the magnitude and direction (toward A or toward B) of its initial acceleration. (G = 6.67 × 10-11 N ? m2/kg2)
A ball thrown upwards reaches a maximum height and then comes back down to the original level. At the peak of the motion, the velocity is __________ and the acceleration points __________
Fill in the blank(s) with correct word