_ 1. Calcula la densidad de un cuerpo que tiene de volumen 2 cm3 y una masa de 25 g.

DATOS FÓRMULA SUSTITUCIÓN RESPUESTA
V= 2 cm3 M 25gr R= 12.5 gr/cm3
M=25 gr ---= D = 12.5 gr/cm3
D= V 2 cm3

2. Calcula el volumen de un cuerpo que tiene una densidad de 2 kg/m3 y una masa de 50 kg.
DATOS FÓRMULA SUSTITUCIÓN RESPUESTA

D= 2kg/m3 D 2kg/m3 R=
M= 50 kg = V =
V=? m 50 kg

3. Calcula la masa de un cuerpo que tiene 2 m3 de volumen y una densidad de 13 kg/m3.
DATOS FORMULA SUSTITUCION RESPUESTA
d=
v= 2 m3
m=

4. Calcula la densidad de un cuerpo que tiene de masa 12 g y un volumen de 3 cm3. Dar el resultado en unidades del S. I.

DATOS FORMULA SUSTITUCIÓN RESUESTA

5. Calcula el volumen de un cuerpo que tiene una masa de 300 g y una densidad de 3 g/cm3. Dar el resultado en unidades del S. I.

Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.

The inside surface of a cylindrical-shaped cave of inner diameter 1.0 m is continuously covered with a very thin layer of water. the cave is very long and it is open on both ends. the water on the cave surface is at a constant temperature of 15.5 °c. the cave is constantly exposed to wind such that 15.5 °c air flows through the cave at 4.5 m/s. the kinematic viscosity of the air is 14.66 x 10-6 m2/s and the molecular diffusion coefficient of water vapor in the air is 0.239 x 10-4 m2/s. because the cave diameter is so large, the flow of wind down the length of the cave, in the x direction, can be treated like it is external flow and the cave surface can be approximated as flat where appropriate. calculate the x value, in a) the transition to turbulent flow occurs at rex meters, where the air flow transitions from laminar to turbulent along the inside surface of the cave b) calculate the x value, in meters, where the bulk steady state concentration of water vapor in the air flowing in the cave is 10% of the saturation concentration. assume the air at the surface of the water layer is 100% saturated with water vapor. assume the wind entering the cave contained no moisture before it entered the cave. take into account the transition from laminar to turbulent flow when solving part b