Answer:
Absolute Pressure at depth h =
Explanation:
<u>Given:</u>
- Radius of the bubble at depth h,
- Radius of the bubble at the surface of the water,
- Acceleration due to gravity,
<u>Assumptions:</u>
- Atmospheric pressure,
- Density of water,
- Pressure at depth h =
- Pressure at the surface of water =
According to Ideal Gas Law,
where,
- P = pressure.
- V = volume.
- n = number of molecules.
- k = Boltzmann constant.
- T = absolute temperature.
For the given case, the temperature of the air bubble is constant. The number of molecules of the bubble also does not change, therefore,
PV = constant.
The pressure at the surface is equal to the atmospheric pressure,
The pressure at depth h is equal to sum of atmospheric pressure and the pressure of the water upto depth h,
Using these values,
The absolute temperature at that depth is given by
Answer:
9.67 A
Explanation:
The weight of a student with a mass of m = 75 kg is:
where g=9.8 m/s^2 is the acceleration due to gravity.
We want the magnetic force on the wire to be equal to this weight. The magnetic force on the wire is
where
I is the current in the wire
L = 2.0 m is the length of the wire
B = 38 T is the magnetic field
is the angle between the direction of B and L
Since we want W=F, we can write
And we can solve it to find the current I:
c
Immediately upon reaching its lowest point, a falling pendulum bob has its greatest amount of kinetic energy, which is less than the initial amount of potential energy.
remember the law of energy there cannot be any more since it is using the potential energy to move
An idea that is supported by some evidence, but is not yet the basis for a field of study is called a working theories.
<u>Explanation:
</u>
The combined form of one’s skills, the work experiences from testing to reveal some truth about the issues or being involved one’s work in an experiment usually called as working theory.
These type of theories are more elaborate, interconnected, make some experiences with the solution to sort out the issues and seems to be useful in event monitoring. These can be supported with certain evidences but still not acting as the basement for the field study.
Answer:
the average net force on the truck is 3744 N.
Explanation:
Given;
mass of the truck, m = 1200 kg
initial velocity of the truck, u = 25 m/s
final velocity of the truck, v = 53 m/s
distance traveled by the truck, d = 350 m
The acceleration of the truck is calculated as;
v² = u² + 2ad
53² = 25² + (2 x 350)a
700a = 53² - 25²
700a = 2184
a = 2184 / 700
a = 3.12 m/s²
The average net force on the truck is calculated as;
F = ma
F = 1200 x 3.12
F = 3744 N
Therefore, the average net force on the truck is 3744 N.