237 reputation
16
bio website fun-tech.se
location Sweden
age 36
visits member for 3 years, 4 months
seen Sep 4 at 22:46

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Sep
4
accepted Motorbike with parachute vs normal skydive
Mar
21
revised Motorbike with parachute vs normal skydive
Added a figure to describe the problem
Mar
20
comment Motorbike with parachute vs normal skydive
Please clarify what force will kill him? It is not lethal to free-fall 1m, and it is not lethal to glide on the tarmac at 200km/h.
Mar
20
revised Motorbike with parachute vs normal skydive
more language
Mar
20
revised Motorbike with parachute vs normal skydive
Better language to clarify the question.
Mar
20
comment Motorbike with parachute vs normal skydive
I was thinking along the same line.
Mar
19
asked Motorbike with parachute vs normal skydive
Oct
9
accepted Calculate sunrise, where does the magic numbers come from?
Oct
8
revised Calculate sunrise, where does the magic numbers come from?
Better question.
Oct
8
asked Calculate sunrise, where does the magic numbers come from?
Jul
9
awarded  Yearling
Jul
29
comment Why is 55-60 MPH optimal for gas mileage of a passenger car?
@Georg - That must be the CO2 tax that if the car emits less than 120g/km it is a "green car", and I guess that those cars must drive a specified speed when they measure.
Jul
14
comment Are regular light bulbs better for the eyes than CFLs or “tube lights”?
There is tubes with a more yellow light that is softer on the eyes, and in combination with the flicker free technologies they can come quite close to the lightbulbs.
Jul
10
awarded  Supporter
Jul
10
revised Calculating time for a fully charged UPS
a note on age...
Jul
10
revised Calculating time for a fully charged UPS
better syntax
Jul
10
revised Calculating time for a fully charged UPS
clarified my answer
Jul
10
answered Calculating time for a fully charged UPS
Jul
10
awarded  Teacher
Jul
10
answered Fuel usage at the same constant rpm at different gears