(=F. A20.N.. 100.cm? = 0.2N/cm3 soressure 3 A student is investigating the pressure that a block of wood is exerting on the floor.
The weight of the wood is 20 N. The block is 10 cm long, 5 cm wide, and 2 cm high.
What is the biggest pressure that the block can exert on the floor?
Given ForceDON. g.blockArea075X2=\00cm
a
pressure.
Formula & LxWxH
a

If two metal balls each have a charge of -10^-6 c and the repulsive force between them is 1 n, how far apart are they? (coulomb's constant is k = 9.0x 10^9 n-m^2/c^2? 9.5 m 9.0 mm 9.5 cm 0.9 m .

If a simple machine reduces the strength of a force, what must be increased?

You are the coordinator for a program that is going to take place at night in a rectangular amphitheater in the mountains. you will have no access to any electricity, but you must be able to illuminate the entire grounds. you know the intensity of the light from a lantern varies inversely as the square of the distance from the lantern. suppose the intensity is 90 when the distance is 5 m. a. write an equation to model the situation. b. solve for the constant of variation. c. write the equation to model the situation using the constant () of variation. d. you have been given lanterns with 40 light intensity. use your equation to solve for the distance from the lantern. e. you need to illuminate 225 km. how many meters do you need to light? f. how many lanterns will you need?