Answer:
The accurate statements are
2. The train is not an inertial frame of reference.
5. The train could be moving at a constant velocity in a circular path.
8. The train must be undergoing acceleration.
Explanation:
As we observe that the string forms an angle with the horizontal
we can formulate the force equation relevant to the given ball
similarly in the Y direction
Thus we conclude
Answer:
v = 66.4 m/s
Explanation:
We know that the aircraft starts off moving at a speed of
now we have
in the Y direction, we can apply kinematic equations
as there is no acceleration along the x-axis, the velocity in this direction remains unchanged
thus yielding
Answer:
The time required is 20 μs
Explanation:
Here is the data provided:
temperature = 20°C = 293 K
radius = 1 cm
atomic mass of air = 29 u
To determine
the duration for air to refill the vacuum space
solution:
We calculate the root mean square velocity of air particles. This can be expressed as:
where m indicates mass, t is temperature, v is speed, and R is the ideal gas constant, which is approximately 8.3145 (kg·m²/s²)/K·mol.
v = ............................1
v =
Resulting in v = 501.99 m/s.
<pNow, to cover the distance of 1 cm,<pThe duration needed for air is calculated as:time taken =
which gives us:
time taken =
so, time taken = 19.92 × seconds = 20μs.
Thus, the required time is 20 μs.
Broad questions addressed by conducting this experiment involve the effects of electric current.
Electric current measures the quantity of electric charge passing per unit time.
It results from electrons moving due to a voltage difference (high potential to low potential) between two points.
These electrons flow through wires acting as conductors.
Ohm's Law states that:
The potential difference across a conductor is proportional to the current flowing through it, assuming resistance remains the same.
A basic electrical circuit consists of a voltage source (battery) and a lamp.
Ammeters used to measure current must be connected in series with the load.
By adjusting the voltage while resistance is constant, varying current values are observed; increasing voltage produces higher current.
Electron flow inside devices
Keywords: basic electric circuits, Ohm's law, experiment