Comparing AC and DC Voltages

Posted by Mr Mallon on December 10, 2023

Categories: Higher Physics
10Dec
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Cosmological Terms

Posted by Mr Mallon on November 18, 2023

18Nov
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What you can find from Redshift.

Posted by Mr Mallon on November 16, 2023

Redshift

16Nov
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Changing the subject!

Posted by Mr Mallon on November 1, 2023

An important skill in physics is to rearrange formulas. Click the picture to watch the lesson movie.

1Nov
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Weight parallel to a slope.

Posted by Mr Mallon on November 1, 2023

A quick video to calculate the acceleration down a slope.

Categories: Higher Physics
1Nov
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Posted by Mr Mallon on October 30, 2023

The period of a satellite is the time it takes for one complete orbit.

Click the picture to see two satellites orbiting the Earth. Which one has the biggest period.
Determine the periods of each satellite.

30Oct
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AC and DC on an Oscilloscope Screen

Posted by Mr Mallon on October 27, 2023

For Higher Physics students:

  • Determine the period and frequency of the ac supply
  • Find the rms voltage of the ac signal
27Oct
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Momentum Lab

Posted by Mr Mallon on October 24, 2023

Click the above picture to take you to your momentum lab.

Categories: Higher Physics
24Oct
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Measuring Instantaneous speed

Posted by Mr Mallon on October 20, 2023

It is impossible to measure the speed of an object at an instant.
It is only possible to find the object’s speed over a small distance and time.
This is achieved using a light gate and a thin card of length say 10 cm.
When the card interrupts the light beam it turns off a light sensor and starts an electronic timer.
The timer stops when the card passes the light beam and the sensor picks up the light signal again.

The near instantaneous speed is calculated by:

20Oct
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Combine those resistors!

Posted by Mr Mallon on March 4, 2023

Use this sim to find out about the resistance of combined resistors.

4Mar
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