Answer:
Explanation:
First of all, let's convert 2.0 rev into radians:
This means that the angular speed of the wheel is
The angle through which the wheel rotates in a time t is given by
And substituting t=1.0 s, we find
What conclusion could you make about conduction and convection based on these observations?
2 answers:
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The capacitance of the system is
Explanation:
The capacitance of a capacitor is given by the following equation:
where
C is the capacitance
Q is the charge stored in the capacitor
V is the potential difference across the capacitor
In this problem, we have:
is the charge stored
is the potential difference across it
Substituting into the equation, we find the capacitance:
Learn more about capacitors:
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Answer:
Explanation:
This is a projectile motion problem. We will first separate the motion into x- and y-components, apply the equations of kinematics separately, then we will combine them to find the initial velocity.
The initial velocity is in the x-direction, and there is no acceleration in the x-direction.
On the other hand, there no initial velocity in the y-component, so the arrow is basically in free-fall.
Applying the equations of kinematics in the x-direction gives
For the y-direction gives
Combining both equation yields the y_component of the final velocity
Since we know the angle between the x- and y-components of the final velocity, which is 180° - 2.8° = 177.2°, we can calculate the initial velocity.