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That said, it sure wasn't fun for the mail person when they had to deliver me those two boxes of lead ingots.
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I got a pair of dumbbells once (30KG total) that were very efficiently packed in one small box and felt kinda bad about the guy
I'll raise you a 114lb/52Kg battery (not USPS, though; FedEx, IIRC): https://www.amazon.com/gp/product/B00RPOI7F4/ I, too, felt bad for the guy until I saw him toss it on his shoulder like it was nothing, carried to the garage and gently set it down. Not a big guy, either. :-)
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Depends how you measure it. Any X kg/lbs of matter here on earth is still that same X kg/lbs everywhere in the universe. Assuming the scale being used to weight is correctly calibrated to whatever planet it's in, it would still show up as the same amount of kg/lbs.
Depends upon what you set out to measure. lbs is specifically a unit of force. kg is specifically a unit of mass. It is a category error to equate these as measures, although (in many places) an everyday convention to do so on Earth . IIRC the English unit for mass is the slug . If the tecnical limit is 70lbs or so, that is must technically be read as lbs force -- aka force of gravity which varies with location.
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Lead weights continue to be widely used in diving: https://en.wikipedia.org/wiki/Diving_weighting_system (there's a section on materials and toxicity).
They are, but as a diver I will never touch them unless they look in proper shape and are the types wrapped in some other material. Some fishy dive centers will have the old style raw lead blocks..
I have a 115lb shipment of small metal parts that needs to be across the country before Wed. Both FedEx and UPS quoted me ~$750 to ship it in a 12"x8"x8" OSB box via 2-day shipping. Fedex one rate boxes have a weight limit of 50lbs. The small boxes are $31/ea to ship. I just finished breaking the shipment up into 3 parts. Heck, next day would be ~$300.
One guy mailed a bank. One brick at a time.
I have a 115lb shipment of small metal parts that needs to be across the country before Wed. Both FedEx and UPS quoted me ~$750 to ship it in a 12"x8"x8" OSB box via 2-day shipping. Fedex one rate boxes have a weight limit of 50lbs. The small boxes are $31/ea to ship. I just finished breaking the shipment up into 3 parts. Heck, next day would be ~$300.
A laser fusion system can compress materials to a density higher than Osmium but it doesn't stay that dense for very long.
I have a 115lb shipment of small metal parts that needs to be across the country before Wed. Both FedEx and UPS quoted me ~$750 to ship it in a 12"x8"x8" OSB box via 2-day shipping. Fedex one rate boxes have a weight limit of 50lbs. The small boxes are $31/ea to ship. I just finished breaking the shipment up into 3 parts. Heck, next day would be ~$300.
Semi related - a few months ago, while not fully sober, I was aimlessly browsing through Amazon and ended up owning a set of two 1.5inch cubes - one aluminium, one tungsten. It’s kind of a silly purchase considering it’s a lot of money for 2 metal cubes, but it’s honestly very impressive just how heavy that small cube is - both objectively, and when compared to the aluminium cube. Also makes for a great talking point…
When I heard that the crypto millionaires were buying Tungsten cubes for fun, I checked into the prices. Amazon lists a 1.5" cube (weighs 1 kg) at $199 and a 4" cube (that weighs 18.9 kg [0]) at $3499. There's no way I'm spending that, but I will admit to wanting to experience their density for myself. [0] free Prime shipping for the win