Lab report on flock flock y flock z insects and fruits Title your lab report with a few words that

summarize the lab investigation.

Purpose

The lab report should begin with one or two

sentences that state the purpose of the

investigation—what you want to see, practice, learn

about, or test. The purpose statement answers the

question "What are you trying to find out by doing

this experiment?"

The three most common types of labs are:

 inquiry labs: you measure how changing one

variable affects another variable

 discovery lab: you see a scientific

phenomenon—perhaps for the first time.

 forensic lab: you gather and analyze data as

evidence to build an argument in response to a

question, as in a court case

The last part of the pre-lab information section of

your lab report should be a description of the

variables. There could be up to four typ

b is the correct

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

let that person have a turn to speak : )