9. The pressure exerted by a liquid at a depth of 2.5 is 36,750 . What is the density of the liquid, to the nearest /³?
10. A pool containing a liquid with a density of 1,000 /³at the surface of an unknown planet produces a pressure of 8,400 at a depth of 2.4 . What is the acceleration due to gravity () at the surface of this planet?

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 710 n/m. it is initially at rest on an inclined plane that is at an angle of θ = 23° with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is μk = 0.19. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. a) what is the block's initial mechanical energy? b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

Which statement best describes copper? a. it has a low resistance and prevents charges from moving freely. b it has a high resistance and allows charges to move freely. c. it has a high resistance and prevents charges from moving freely. d. it has a low resistance and allows charges to move freely