You and your friend throw balloons filled with water from the roof of a several story apartment house. you simply drop a balloon from rest. a second balloon is thrown downward by your friend 2.2 s later with an initial speed of 43.12 m/s. they hit the ground simultaneously. how high is the apartment house? the acceleration of gravity is 9.8 m/s 2 . neglect air resistance. answer in units of m.

1.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the mass defect of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev 2.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the binding energy of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev 3.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the binding energy per nucleon of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev

Which of the following statement is false ? a.batteries should never be stored on metal trays or outside in the elements)b, battery acid cannot be neutralized)c.do not stack batteries on top of each other)d.never put a damaged battery in a dumpster. i

Achild has maximum walking speed of 1.6 m/s. what is the length of the child's legs? 0.26 m