jkej

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42 Answers

newest activity votes
12
What defines the maximum charge a capacitor can store?
11
Can a hovering helicopter travel half the globe in 12 hours?
6
Is there a compound denser than the densest element?
6
How do we know for certain that space is expanding?
4
Ljapunov exponent of driven damped pendulum
4
Why does the index of refraction change the direction of light
4
Are there “gaps” in light, or will it hit everywhere?
4
Can an induction coil heat two layers of metal?
3
Has anyone on Earth ever seen the dark side of the moon and if so where are the pictures?
3
How do Doppler Effect and Time Dilation differ?
3
Pendulum question
3
Sign of acceleration
3
Does a scale model with 1/2 the linear length have 1/8 the mass?
3
Equations for the two-plane model of the greenhouse effect
3
How to get “real-time” temperature from sensor?
2
Attenuation mass-thickness for sunset light
2
Hot Air Balloon and Buoyancy
2
Freezing point of water with respect to pressure.
2
How does a thermal temperature gun work?
2
(Re-)use of a space elevator (basic mechanics and potential energy source)
2
Does the Earth have a semi-solid body at its core because of lower pressure at the center of the Earth?
2
Photoionization equation
2
What happens to heat waste produced by energy generation?
2
What amount of force is needed to topple a person?
2
What physical quantity has SI unit $\mathrm{kg}/\mathrm{m}$?
1
Real world usage; pump flow vs pressure vs pump head, what is more useful in this situation?
1
effect of vertical collision on kinetic friction and subsequent change in horizontal velocity
1
Modeling incoming solar radiation
1
What is the maximum power available from a magnetic field?
1
Idealized trajectory from sloped surface
1 2