The density of a block of wood with a volume of 50 cubic centimeters and mass off 100 grams

a. 2 g/cm3
b. 0.5 g/m3
c.500 g/cm3
d. 5000 g/cm3

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

In each of the cases that follow, the magnitude of a vector is given along with the counterclockwise angle it makes with the +x axis. use trigonometry to find the x and y components of the vector. also, sketch each vector approximately to scale to see if your calculated answers seem reasonable. (a) 50.0 n at 60.0°, (b) 75 m/ s at 5π/ 6 rad, (c) 254 lb at 325°, (d) 69 km at 1.1π rad.

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25