Answer:
437 Joules
Explanation:
Use the formula for work directly
(work) = (force) x (displacement)
to get
(work) = (19 N) x (23 m) = 437 Joules
Answer:
196000 N
Explanation:
The following data were obtained from the question:
Height (h) = 10 m
Area (A) = 2 m²
Force (F) =.?
Next, we shall determine the pressure in the tank.
This can be obtained as follow:
P = dgh
Where
P is the pressure.
d is the density of the liquid.
g is acceleration due to gravity
h is the height.
Height (h) = 10 m
Density (d) of water = 1000 kg/m³
Acceleration due to gravity (g) = 9.8 m/s²
Pressure (P) =...?
P = dgh
P = 1000 × 9.8 × 10
P = 98000 N/m²
Therefore, the pressure acting on the tank is 98000 N/m²
Finally, we shall determine the force of gravity acting on the column of water as follow:
Area (A) = 2 m²
Pressure (P) = 98000 N/m²
Force (F) =.?
Pressure (P) = Force (F) /Area (A)
P = F /A
98000 = F/ 2
Cross multiply
F = 98000 × 2
F = 196000 N
Therefore, the force of gravity acting on the column of water is 196000 N
Share electrons, have electrical conductivity and have thermal conductivity
Answer:
Explanation
Given that
Temperature changes from
Initial temperature T1 = 300K
Final temperature T2 = 600K
v1 = average speed of gas molecule before absorption of heat
v2 = average speed of gas molecule after absorption of heat
Ratio v2/v1 =?
Related to average speed,
Vrms = √(3RT/M)
We will take 3, T and M as constant,
Then,
Vrms ∝ √T
Then,
Vrms / √T = k
So,
V1 / √T1 = V2 / √T2
Cross multiply
V1 • √T2 = V2 • √T1
Make V2 / V1 subject of formula
V2 / V1 = √T2 / √ T1
V2 / V1 = √600 / √300
We know from indices that
√a / √b = √(a/b)
Then,
V2 / V1 = √(600 / 300)
V2 / V1 = √2
Then, The ratio v2 / v1 is √2
So, if T is double, then, V increases by a factor of √2
