The weight of an 8 foot long 2x4 depends entirely on the wood. A soft wood such as Eastern Pine at 25 percent moisture weighs 2.241 pounds per foot. A hardwood such as Yellow Birch will weigh 3.677 pounds per foot.
Depends on the wood. Here is a link to a web site with specific weights for different materials (http://www.reade.com/Particle_Briefings/spec_gra2.htm)l
If you by 2x4x10 mean 2 inch x 4 inch x 10 feet that would be 960 cubic inches. 1 cubic feet is 12 inch x 12 inch x 12 inch = 1728 cubic inch
So 960 cubic inch is 0.555 cubic feet
Ex
From web site: Aspen wood= 26 lb/cubic foot
26 lb x0.555 = 14.43 lb
If you mean 2 * 4 * 10 cm that makes 80 cm3 which would weigh in the following woods (density in parentheses):
Balsa (0,12 - 0.38): 10g - 30g
Maple (0.60) 48g
Ebony (1.25) 100g
Aspen (0.40) 32g
Oak (0.8) 64 g
Pine (0.35 - 0,67) 28 g - 54 g
The densities above are for dry wood (12% humidity by weight)
I take it that you are asking about a 2"x4"x8', that is inches in size and feet long. Also is it cut from pine fir spruce or cedar? I believe a good ol' pine #2 or better framing stud is around 20 lbs. Reference the link below: http://www.timberbuyer.net/weight.htm
Not enough info how big is it and what is it made of
It depends on what the 2x4 is made of and how long it is.
8
Are you seriously asking that...?
400 to 600lbs
10#
5 pounds
18 pounds
10
as much as she wants.....
100-120
4000 pounds for 10'
25 pounds
About 30 to 40 pounds per foot, depending on body type.
10 stone?
54
well you should weigh at least 80 to 100 pounds
75 pounds
she should weigh around 80 pounds, I asked my doctor
125-135 lbs