Answer: W = 0.8 J
Explanation:
At 0.12 m the force is 3.0 N
At 0.28 m the force is 7.0 N
The distance of stretch is 0.28 - 0.12 = 0.16 m
The AVERAGE force is (3.0 + 7.0) / 2 = 5.0 N
The work is
W = Fd = 5.0(0.16) = 0.8 J
or
A formula guy might find the slope of the line
k = 7 N / 0.28 m = 25 N/m
PS = ½kx²
PS = ½(25)0.28² - ½(25)0.12² = 0.8 J
or
A charts gal might realize that the work is the area under the curve between the limits
W = A = (0.28 - 0.12)[3.0 + ½(7.0 - 3.0)] = 0.8 J
or
A math guy might find an equation for the line and integrate between the limits.
y = 25x
W = for b = 0.12 and a = 0.28
W = 12.5x² | for b = 0.12 and a = 0.28
W = 12.5(0.28)² - 12.5(0.12)²
W = 0.8 J
Starch and
cellulose have the same substance but different structures. They are both
polysaccharides. The basic unit of a polysaccharide is the glucose. Glucose,
which contains carbon, hydrogen, and oxygen, have two forms. The alpha-glucose
with an alcohol group attached to carbon 1 is down and the beta-glucose with
the alcohol group attached to carbon 1 is up. Starch is the alpha-glucose while
cellulose is the beta-glucose. Starches are linked into a straight chain
whereas the cellulose are connected like a pile of stack paper. When the human
body eats starch, it can digest the starch but not the cellulose because it has
no enzyme that can break it down.
Answer:
10 m/s
Explanation:
Since acceleration is rate of change of speed per unit time and we know the initial velocity is zero then (v-u)/t= a hence v=at where v is the final velocity, u is initial velocity which is zero, t is time and a is acceleration. Substituting the value of acceleration with 2m/s2 and t for 5 s then
V= 5*2=10 m/s
Answer:
v = 8 [m/s]
Explanation:
Debemos determinar la velocidad promedio, esta velocidad se define como la relacion entre la distancia recorrida sobre un determinado tiempo.
De esta manera tenemos la siguiente expresion:
v = x/t
donde:
v = velocidad [m/s]
x = distancia = 400 [m]
t = tiempo = 50 [s]
v = 400/50
v = 8 [m/s]
False i’m not too sure but hope i helped<3