Earth is approximately a sphere with a radius of 6.37 x 106 m. what are i) its circumference in km ii) its surface in km² iii) its volume in km³

An ideal spring has a spring constant (force constant) of 2500 n/m, is stretched 4.0 cm, how much elastic potential energy does it possess? (a) 3j (b) 0.00j (c) 1j (d) 2j (e) 4j

It is may 5 and you are somewhere in the northern hemisphere. if you determine that the noon sun is 51 degrees above your southern horizon, what is the latitude of your location

Four friends, a, b, c, and d are standing varying distances away from a speaker which is producing sound waves.