User Simon B

9 votes

Why is it so easy to create audible sound?

answered Dec 23, 2014 at 15:26

5 votes

How can we take pictures of something billion of light years away?

answered Dec 22, 2014 at 14:17

3 votes

Accepted

Proving an AC current with peak amplitude of 311V is equivalent to a DC current of 220V

answered Mar 3, 2016 at 15:44

3 votes

why systems like these don't work

answered Jun 17, 2015 at 11:39

2 votes

If you place a filled water bottle at the bottom of the Mariana Trench, how does the bottle stand the enormous pressure?

answered Jul 21, 2015 at 16:14

2 votes

Accepted

Boiling water in metal pot

answered Oct 25, 2018 at 15:59

2 votes

Energy and its physical significance

answered Nov 9, 2015 at 14:32

2 votes

How do you detect the colors of a traffic light? (exam question)

answered Dec 17, 2015 at 14:22

1 vote

What is a qualitative description of energy?

answered Dec 16, 2015 at 13:32

1 vote

Why do electric shocks send you flying?

answered Sep 3, 2015 at 13:28

1 vote

Accepted

Cart speed and wheel rotation

answered May 5, 2015 at 11:37

1 vote

Accepted

Efficiency of an electric motor?

answered May 11, 2015 at 14:59

1 vote

Where do electrons come from in thermionic emission?

answered Sep 21, 2015 at 13:54

1 vote

differentiate between v(rms) and V(avg/dc) of an Ac signal

answered Oct 5, 2015 at 12:18

0 votes

Thermal Imaging reflection?

answered Sep 4, 2015 at 13:38

0 votes

How to Vary the wavelength of UV CFL?

answered Sep 7, 2015 at 14:05

0 votes

Accepted

Ammeter range and shunt resistance

answered Feb 25, 2016 at 16:45

0 votes

Accepted

Materials and infrared images

answered Oct 11, 2018 at 15:07

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18 Answers

Why is it so easy to create audible sound?

How can we take pictures of something billion of light years away?

Proving an AC current with peak amplitude of 311V is equivalent to a DC current of 220V

why systems like these don't work

If you place a filled water bottle at the bottom of the Mariana Trench, how does the bottle stand the enormous pressure?

Boiling water in metal pot

Energy and its physical significance

How do you detect the colors of a traffic light? (exam question)

What is a qualitative description of energy?

Why do electric shocks send you flying?

Cart speed and wheel rotation

Efficiency of an electric motor?

Where do electrons come from in thermionic emission?

differentiate between v(rms) and V(avg/dc) of an Ac signal

Thermal Imaging reflection?

How to Vary the wavelength of UV CFL?

Ammeter range and shunt resistance

Materials and infrared images