my friend and i are doing a DP lab, we are trying to find a resister which reacts to water/ moisture in soil. a resistor that is directly proportional to the moisture in the soil
thank you.
Homework Statement
A puck is moving on an air hockey table. Relative to an x, y coordinate system at time t = 0 s, the x components of the puck's initial velocity and acceleration are v0x = +5.6 m/s and ax = +6.3 m/s2. The y components of the puck's initial velocity and acceleration are v0y =...
Homework Statement
a container of gas has a volume of 0.1 m^3, at a pressure of 200000 Nm^-2 and the temperature 27 C, find the new pressure if the gas is heated at constant volume to 87 C.
Homework Equations
P1/P2 = T1/T2
pV / T = R ( constant)
The Attempt at a Solution
i...
first of all, thank you very much, but yet still i didnt get the correct answer. therefore i would like to find out if i was in the right direction
1. by using linear motion equation : v^2 = u^2 +2as
solved for S : s = v^2-u^2/2a
when distance is found. i calculated the force = mg
word done...
first of all, thank you very much, but yet still i didnt get the correct answer. therefore i would like to find out if i was in the right direction
1. by using linear motion equation : v^2 = u^2 +2as
solved for S : s = v^2-u^2/2a
when distance is found. i calculated the force = mg...
Homework Statement
in the absense of bearing friction a winding engine would raise a cage weighing 1000 kg at 10m/s, but this is reduced by friction to 9 m/s, how much oil, initially at 20 C is required per second to keep the temperature of the bearing down to 70 C
(specific heat capacity...
Homework Statement
A body is undergoing S.H.M. of amplitude 4 x 10-2 m and with a maximum
speedo f 0.20m s-1. Calculate the period of the oscillation given that the velocity,
v, of a body undergoing S.H.M. is ""v= omega sq.rt of A^2 - x ^2"" , where trl is the angular
velocity, A is the...
lets just stick to the first equation ;)
F = V p g
and what I'm wondering is F = upthrust ,
V = volume of object submerged in liquid OR volume of the block?
p = density of liquid
g = acceleration due to gravity
am i right ?
thank you very much for comfirming my answer :)
i was actually try to the method you have just suggested.
F= Pa = p g h * A
the the pressure there is always referring to Pressure of liquid right ?
however i think i have made a mistake ...
for F= V p g <-- the volume should be the volume...
the buoyant force = V p g ...
the buoyant force = to the force exerted by the object.
therefore times the buoyant force by two, Because it is exact half submerged ?