Sun 6 Jan, 2013 05:06 pm - QUESTION
A steady stream of 15 balls per second (50 grams each), rolls from a horizontal table and falls through a height of 1 m onto the top of a scale. The scale responds slowly and so reads the... (view)
Sun 6 Jan, 2013 03:00 pm - Calvin drives a small cart horizontally with speed V over the surface of an unknown planet with gravitational constant g=2m/s^2. He drives over the edge of a crater whose plane wall slopes... (view)
Sun 6 Jan, 2013 03:00 pm - A river flows downstream from east to west with a constant speed of 6m/s. There is a boat the usually travels in a straight line between two docks A and B directly opposite each other. The river is... (view)
Sun 6 Jan, 2013 02:59 pm - In a spaceship, dropped items in the cabin accelerate to the floor at 10^-6g, where g is the usual value back at earth. In this micro-gravity environment, a helium-filled balloon can support a 0.1... (view)
Sun 6 Jan, 2013 02:59 pm - Myron is supported by a stationary hot air balloon directly above John who fires a pistol at the balloon. It is not clear to John whether his bullet strikes the balloon on the way up or on the way... (view)
Sun 6 Jan, 2013 02:59 pm - Protons have 2 up quarks, 1 down quarks (UP, UP, DOWN)
Neutrons have 1 up quark and 2 down quarks (DOWN, DOWN, UP)
With the above information, the charge on each quark is found, and also a... (view)
Sun 6 Jan, 2013 02:07 pm - A steady stream of 15 balls per second (50 grams each), rolls from a horizontal table and falls through a height of 1 m onto the top of a scale as shown. The scale responds slowly and so reads the... (view)
Sun 6 Jan, 2013 01:53 pm - Can you help me in this word problem for physics?
There are two cities (A and B). On a train from A to B, every 50 minutes the train meets another train going in the opposite direction (from B to... (view)
Sun 6 Jan, 2013 11:30 am - There are two cities (A and B). On a train from A to B, every 50 minutes the train meets another train going in the opposite direction (from B to A), on a parallel track. Constant speed of the... (view)
