Hristina and Richard are building a wooden raft from logs. Each log is 3 meters long and has a diameter of 16 cm, how many logs would they need to just barely float them? Assume the combined mass of Hristina and Richard is 121, and the density of wood is 0.720 g/cm3.

During takeoff, the sound intensity level of a jet engine is 170db at a distance of 34 m. what's the sound intensity level at a distance of 1.0 km?

The pressure increases by 1.0 x 104 n/m^2 for every meter of depth beneath the surface of the ocean. at what depth does the volume of a pyrex (bulk modulus 2.6 x 1010n/m^2) glass cube, 9.8 x 10^−2m on an edge at the ocean's surface, decrease by 7.5 x 10−10m^3? explain the formula beyond this point: p=1.0x10^4, b=2.6x10^10, l=9.8x10^−2, delta v=7.5x10^−10. at some point l needs to be cubed. why p is divided by delta v?

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2