An atom of lithium has 3 protons, 4 neutrons, and 3 electrons. Its atomic mass is 7.016005 u. What is its binding energy? note that 1 u is equivalent to 931.5 Mev. A) 30.24 MeV
B) 36.11 MeV
C) 37.82 MeV
D) 41.93 MeV

Your 249 ml cup of coffee is too hot to drink when served at 82 degree celsius. what is the mass of an ice cube taken from a -21 degree celsius freezer, that will cool your coffee to a pleasant 54 degree celsius. specific heat of the water is 4190 j/kg c, specific heat of ice is 2090 j/kg c, heat of fusion of ice is 3.33 x 10^5 j/kg

Acaterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. eventually, it reaches the top. when it reaches the top, it does not pull itself over so it will slide down 1 cm. what is the total displacement traveled?

Ajoint produces movement when its angle decreases. which type of movement is it?