While watching the clouds pass by, you notice a European swallow flying horizontally at a height h = 21.4 m above you. When the swallow is directly overhead, it drops an m = 11.1 kg coconut. From your ornithological studies, you know that the air-speed of this particular species of swallow while carrying such a load is v0 = 6.61 m/s. In this problem you may neglect air friction. Assume the origin of the coordinate system there is at your head. Calculate the magnitude of angular momentum for the coconut as observed by you after one second after it is released directly overhead,

These models show the electron structures of two different nonmetal elements. which element is likely more reactive, and why? element 1 is more reactive because it has fewer electron shells and is toward the top of its group on the periodic table. element 1 is more reactive because it has more electrons in its valence shell and is farther to the right on the periodic table. element 2 is more reactive because it does not have a valence shell close to the nucleus, so it will attract electrons. element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.

The density of a substance is 4.0 g/cm3. if a sample of the substance has a volume of 25 cm3 then what is the mass

An electron is traveling with initial kinetic energy k in a uniform electric field. the electron comes to rest momentarily after traveling a distance d. (a) what is the magnitude of the electric field