Recent content by Wimpalot

Thank you that worked perfectly and I actually understand why too.

I am not entirely sure. Is it the total temperature difference? That doesn't sound right...?

I got: 5.95*10-12 * t = 1/3T3 And then I substituted t = 3000 and solved for T

I got -7.79°C which is still wrong apparently

I am not really sure how to do that. Do I just say: eσAT(t)4 = -mCdT/dt? How do I go about solving this? And is it okay to do this because now both are with respect to time (as in the power is J/s and we have a dt on the other side)?

Homework Statement A satellite to reflect radar is a 3.5-m-diameter, 2.0-mm-thick spherical copper shell. While orbiting the earth, the satellite absorbs sunlight and is warmed to 50 °C. When it passes into the Earth's shadow, the satellite radiates energy to deep space. You can assume a...

I think it was 585Hz. Sorry it has been a while since I did this problem. Honestly I think I just guessed at whether it was 585 or 589

Right of course, thank you

Thanks, that helps me understand what it is but I still have no idea how to do the question

Homework Statement A flute player hears four beats per second when she compares her note to a 587 Hz tuning fork (the note D). She can match the frequency of the tuning fork by pulling out the "tuning joint" to lengthen her flute slightly. What was her initial frequency? Homework Equations Not...

Turns out every other question wants two significant figures except this one which wanted exactly 3 to be correct so yeah. 0.00184 was correct. Thanks for the assistance

That was my second thought. In which case I get 0.0019 which was also incorrect. So yeah, no idea what the issue is maybe they do want different units so I may try that otherwise I don't know. I only get 5 attempts (this is mastering physics)

It has never mattered before as I can specify the units. So it shouldn't matter.

Homework Statement A large 30000 L aquarium is supported by four wood posts at the corners. Each post has a square 6.00 cm x 6.00 cm cross section and is 90.0 cm tall. Take Y=10^10 for wood Homework Equations ΔL = FL/AY F = ma ρ = m/V The Attempt at a Solution So the total area is 0.06 * 0.06...

Yes, I meant measure. So it is just as simple as subtraction? Excellent, thank you. So just do the experiment twice once with the block and once without and then subtract the platform only from the platform and box result. Thank you for all of your help. You have saved me a lot of stress tomorrow