A hunter on level ground fires a bullet at an angle of 10 degrees above the horizontal while simultaneously dropping another bullet from the level of the rifle. Which bullet will hit the ground first?
A) the one dropped
B) the one fired
C) both hit at the same time.
Answer: A
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The transition from chemistry to biology occurred
A) gradually in a number of distinct steps B) very quickly in in one single step C) very quickly in a number of distinct steps D) gradually in one single step
Consider a spacecraft that travels round-trip to the zeta reticuli star system (distance 39.5 light-years) at 99% of the speed of light
If the round-trip travel time as measured from Earth is 79.8 years, how much time would pass for passengers on the spacecraft? A) 39.9 years B) 79.8 years C) 22.6 years D) 11.3 years
Why is it difficult to directly measure the size of a star's disk from Earth?
What will be an ideal response?
What determines the smallest angular separation that two objects can have and, ideally, show up in a photograph as two separate objects?
a. How far away the objects are. b. The shutter speed of the camera. c. The size of the opening that lets the light into the camera lens and the wavelength of the light. d. Just the wavelength of the light. e. Just the size of the opening that lets in the light into the camera.