A 5g bullet moving at 600m/s penetrates a tree trunk to a depth of 4cm.(a)Use the work energy theorem, to determine the average frictional force that stops the bullet.(b)Assuming that the frictional force is constant, determine how much time elapses between the moment the bullet enters the tree and the moment it stops moving.

What type of light does this light bulb produce most (i. e. at what wavelength does the spectrum have maximum intensity)?

Describe different biomes. what are some adaptations that organisms (plants or animals) must have to live in each biome?

Determine the change in width a, height b, thickness t when a plate is subjected to the uniform distributed load and is made of material having modulus of elasticity e=230 gpa and poisson's ratio ν=1/3. given : a=400 mm and b= 300 mm also the uniformly distributed load in downward y direction of plate is 2 mn/m and in the positive x direction is 3 mn/m and t=20 mm