The final angular velocity is 8.6 rad/s
Explanation:
To solve this problem, we can use the equivalent of the suvat equations for the angular motion. In particular, we can use the following equation:
where:
is the final angular speed
is the initial angular speed
is the angular acceleration
t is the time
For the propeller in this problem, we have:
is the initial angular speed
is the angular acceleration
Substituting t = 3.0 s in the equation, we find the final angular velocity:
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The initial equivalent resistance of the circuit is
which means
Therefore the initial current in the circuit is
When the new resistor of
is added to the circuit in parallel, the new equivalent resistance of the circuit is
from which we find
This means that the equivalent resistance of the circuit has decreased, and the new current is
which means that the current in the circuit has increased.
Answer:
P = 86956.52 Pa
Explanation:
Data:
- F = 800 N
- A = 0.0092 m²
- P = ?
Use the formula:
Replace and solve:
The pressure it exerts on the ground is <u>86956.52 Pascal.</u>
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Answer:
The final speed will be "".
Explanation:
The given values are:
Potential difference,
Δv = 400 v
Radius,
r = 0.5580 cm
As we know,
⇒
and,
⇒
then,
⇒
On substituting the values, we get
⇒
⇒
⇒