Length of the tunnels is the dependent variable
DEPENDENT VARIABLE:
- The dependent variable of an experiment is the variable that the experimenter measures or records.
- The dependent variable is also called the responding variable because it responds to the changes made to the independent variable.
- In this question, a student investigated whether ants dig more tunnels in the light or in the dark. The time of the day is the independent variable while the length of the tunnels that was measured by the student is the dependent variable.
- Therefore, the length of the tunnels is the dependent variable.
Learn more: brainly.com/question/17498238?referrer=searchResults
All credit goes to the person who answered this years ago:)
Reaches max height at t = 2.42s.
Explanation:
I've assumed we are neglecting air resistance. If not let me know and I'll update.
We want to examine the behaviour of the ball in the y-direction. In the absence of air resistance the only force acting on the ball is gravity, which produces an acceleration in the negative y direction. From Newton's 2nd law:
m
d
2
y
d
t
2
=
−
m
g
m
d
2
y
d
t
2
=
−
m
g
Integrating:
d
y
d
t
=
−
∫
g
d
t
d
y
d
t
=
−
g
⋅
t
+
C
From initial conditions,
d
y
d
t
=
v
y
(
t
)
,
v
0
=
v
(
0
)
=
31
⋅
sin
(
50
)
∴
v
y
(
t
)
=
v
0
−
g
⋅
t
The maximum height will be reached at
v
y
=
0
so we solve for t.
v
y
(
t
h
max
)
=
0
⇒
v
0
=
g
⋅
t
h
max
t
h
max
=
v
0
g
=
31
⋅
sin
(
50
)
-- Use power when you're dealing with an amount of energy
AND the time it took. Because ...
Power =
(amount of work done or energy moved)
divided by
(time to do the work or move the energy from one place to another).
-- Use an energy equation when you have to figure out an amount of energy.
It would come up in situations like this:
. . . . . how much work is done (work is energy)
. . . . . energy needed to melt some amount of ice
. . . . . energy needed to boil some amount of water
-- Use an efficiency equation when you're dealing with
. . . . . the amount of work, or energy, or power going in
. . . . . AND the amount of work, or energy, or power coming out.
Kinetic energy is the kind of energy present in a body due to the property of its MOTION.
Potential Energy is the type of energy present in a body due to the property of its STATE.
Answer:
The minimum diameter of the stick to bear the normal stress as 100 psi is 0.1785 in.
Explanation:
Taking moment along point A
Also normal stress is given as 100 psi
Now
The minimum diameter of the stick to bear the normal stress as 100 psi is 0.1785 in.