It’s very big and very small numbers
Answer:
Pressure is equal in A, B, C and D
Explanation:
Pressure does not depends on the shape of the container
Pressure acting all direction
Answer:
v = 0.42m/s
Explanation:
In order o calculate the linear speed of the point at the border of the wheel, you first take into account that the total acceleration of such a point is given by:
(1)
atotal: total acceleration = 1.2m/s^2
ar: radial acceleration of the wheel
at: tangential acceleration
The tangential acceleration is also given by:
(2)
r: radius of the wheel = (40cm/2 )= 20cm = 0.2m
α: angular acceleration = 4.0rad/s^2
You replace the expression (2) into the expression (1) and solve for the radial acceleration:
Next, you use the following formula for the radial acceleration and solve for the linear speed:
The linear speed of the point at the border of the wheel is 0.42m/s
A voltmeter needs to be connected in parallel to the two sites in order to measure the potential difference between them.
<h3>What is a voltmeter?</h3>
- The electrical potential difference between two locations in an electric circuit is measured using a voltmeter.
- The potential difference between two ends of a current-carrying conductor is measured using a voltmeter.
- On a scale that is typically measured in volts, millivolts (0.001 volts), or kilovolts, a voltmeter primarily monitors the voltage of direct or alternating electric current (1,000 volts).
- Numerous voltmeters are digital and display readings as numbers.
<h3>How is a voltmeter connected?</h3>
- A galvanometer with high resistance is a voltmeter.
- Any portion of an electrical circuit can be measured.
- Due to its high resistance, it is linked in parallel so that it does not impact the circuit's overall net resistance and does not draw any current by itself.
- A device's voltage is measured by a voltmeter connected in parallel, and its current is measured by an ammeter connected in series.
Learn more about voltmeters here
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