One way to increase the resolving power of a telescope is to
A. make its mirror smaller.
B. make its mirror bigger.
C. observe objects using longer wavelengths.
D. replace its mirror with a lens of the same diameter.
Answer: B
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Projectile Motion: A celebrating student throws a water balloon horizontally from a dormitory window that is 50 m above the ground. It hits the ground at a point 60 m from the building without appreciable air resistance.(a) What will be the horizontal component of the velocity of the balloon just before it hits the ground?(b) What will be the magnitude of the vertical velocity of the balloon just before it hits the ground?
What will be an ideal response?
If you shine a flashlight "horizontally" from one wall to an opposite wall inside an accelerating spaceship in deep space, you will see the light traveling
A) in a straight-line path. B) in a parabolic path. C) along the arc of a circle.
A planet has the orbit shown below. Use the 8 labeled points to answer all questions
John is in an inertial frame F and Jack is in a frame F' moving relative to F in the x-direction at a constant velocity v. John and Jack each hold a 1-m stick with them oriented in the x-direction. Which one of the following statements best describes the situation?