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-1
Is the earth expanding?
0
Simple friction formula for a car
2
How GPS device works?
1
What devices could be taken round dwellings to measure the thermal conductivities of buildings in situ?
0
Trampoline physics - what is the right time to crouch and to jump to maximize your height?
1
Calculate the weight a simple plank can support
2
Does my model aircraft propeller beat the sound barrier?
4
Why does every thing spin?
0
Calculating time for a fully charged UPS
0
Small scale water power, how does water volume and hight convert into electric energy?
4
Will this poor-man's single band pyrometer work?
3
Batman spotlight in the sky
1
How could pinion in automatic quartz watch be rotated at 100K RPM?
1
Does it matter how you order your tug-of-war participants?
0
Stress vs Strain for mild steel
2
On a bicycle, why does my back tyre wear so much more quickly than the front?
0
What makes waves at beaches to come with high velocity and frequency at nights?
0
What, if anything, makes forces the “cause” and acceleration the “effect”?
0
Direct exposure to the vacuum of space
1
what cools bottle of water faster: ice or snow
1
Why do blades of windturbine propellers as comp. to propellers of ships cover very different areas?
-1
Optimum magnet layout for tripping a coil sensor
-1
Can a particle be *physically* observed inside a quantum barrier?
3
How do you produce electricity from a wind mill?
2
How do you magnetize an object?
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