Answer:
The work required to pump the liquid out of the spout is 2.6 × 10⁶ J
Explanation:
<u>Step 1:</u> consider a spherical tank, sliced into two equal part, since it is half filled.
The new circular surface has a radius, if we construct a right angled-triangle on the surface. The initial radius of the spherical tank becomes the hypotenuse of the triangle and the radius is calculated as follows;
volume (v)
<u>Step 2:</u> Total height, d, in which the liquid is pumped out;
d = b + 3 + 1
= b + 4
<u>Step 3:</u> Force required to pump the liquid out:
F = mg
But, m = density (ρ) x volume (v)
F = ρvg
Given;
ρ = 900 kg/m³ and g = 9.8 m/s²
<u>Step 4:</u> The work done in pumping the liquid out of the spout
W = F x d
Therefore, the work required to pump the liquid out of the spout is 2.6 × 10⁶ J
For thermometers to read temperatures correctly, they must be immersed in the substance being measured while reading the temperature. When they are taken out the substance, there is a possibility that the fluid inside would change its level due to the sudden change in the temperature. Thus, giving you an erroneous reading of the temperature.
Radiation
When the sun radiation fall on the earth and it’s objects they receive heat energy and hence get heated thus the sun heat reaches the earth by = The process of radiation
Hi there!
Recall Newton's Second Law:
∑F = net force (N)
m = mass (kg)
a = acceleration (m/s²)
We must begin by solving for the acceleration using the following:
a = Δv/t
In this instance:
Δv = 3 m/s
t = 2.5 sec
a = 3/2.5 = 1.2 m/s²
Now, plug this value along with the mass into the equation for net force:
Hey there!
To solve this question, lets convert 108 km/h into meters per second.
1 km/h is equal to 0.277778 m/s
To convert 108 km/h into m/s, we just multiply 0.277778 by 108.
0.277778 × 108 = 30.000024
So, the train is travelling at approximately 30 meters per second.
Thank you!