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K-Feldspar
  • Member for 7 years, 10 months
  • Last seen more than 2 years ago
58 votes
8 answers
13k views

Given that ice is less dense than water, why doesn't it sit completely atop water (rather than slightly submerged)?

16 votes
4 answers
7k views

How are beats formed when frequencies combine?

13 votes
3 answers
14k views

Why doesn't a ball thrown horizontally have a greater speed upon hitting the ground than one thrown vertically if they are thrown with same speed?

8 votes
4 answers
3k views

Why doesn't increasing resistance increase brightness if $P=I^2\cdot R$

5 votes
3 answers
14k views

Do electrons coming out of a lightbulb (and going back into the circuit) slow down?

3 votes
5 answers
14k views

What is the actual significance of the focal point of a lens?

2 votes
2 answers
1k views

Finding how long a projectile is in the air: why does y=0 give the time that it lands and not the time that it is launched?

2 votes
2 answers
270 views

Which is the correct triangle to draw to derive the force component along a rope? [duplicate]

2 votes
4 answers
6k views

Transverse waves : why does moving particles up and down cause energy to move to the right (and not left)?

1 vote
2 answers
2k views

Charged body in hollow conductor : what is the role of insulators and how does the charge distribution change if insulators vs conductors are used?

1 vote
2 answers
11k views

Simple harmonic motion : why is the period independent of amplitude even when angular velocity is related to the amplitude?

0 votes
1 answer
1k views

Why does the magnetic field decrease at a decreasing rate (and not linearly) as the distance from the centre of the wire increases

0 votes
3 answers
2k views

If capacitance is the ability to store charge, doesn't this mean two capacitors of different capacitance will store different amounts of charge?

0 votes
3 answers
2k views

Pressure at base of 3 different dam designs

0 votes
1 answer
179 views

What caused the Moon's initial inertia?

0 votes
1 answer
57 views

Identifying waveform of oscillator under control of a pulley [closed]

0 votes
1 answer
147 views

When a boat is pushed off a sandbank with an oar, why doesn't the momentum of the water change?

0 votes
1 answer
300 views

Why doesn't centripetal acceleration: $(2 \pi r)^2/r $ include a time or period term? [closed]

0 votes
3 answers
5k views

When finding acceleration in a pulley system, why does $ a = (m_1g_1 - m_2g_2)/(m_1 + m_2)$ hold when none of the accelerations is $g$

0 votes
1 answer
1k views

Why is pressure greater in an open part of a tube than in a constricted one?

0 votes
1 answer
109 views

Is momentum distributed based on weight? When a ball (m=2kg) hits a stationary ball (m=1kg), how do we find which ball moves faster?

-1 votes
1 answer
105 views

Does this image show a series or parallel circuit? [closed]

-1 votes
1 answer
2k views

When does F(electrical)=qE=F(magnetic)=qvB hold?

-1 votes
1 answer
2k views

Why is the potential difference across two connected capacitors equal to the potential difference across each individual capacitor?

-1 votes
1 answer
25k views

How to determine if $R_1$ and $R_2$ for a lens is negative or positive?

-2 votes
1 answer
66 views

Why is the trajectory of object in xOy plane - given by y=y0+vyvxx-x0 [closed]