Two students measure the length of the same rod and report the results 1353 mm and 137 3 mm. Draw an illustration like that in Figure 2.1 to repre sent these two measurements. What is the discrepancy between the two measure- ments, and is it significant?

Determine the fraction of the magnitude of kinetic energy lost by a neutron (m1 = 1.01 u) when it collides head-on and elastically with a target particle at rest which is 21h (heavy hydrogen, m = 2.01 u).

What component of earth’s atmosphere exists entirely as a result of photosynthesis?

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.