What Kind of Battery Would You Need to Power a Lightsaber?
Melting an ice cube takes 3.34 x 105 joules per kilogram. So a single ice cube with a mass of 50 grams would take 16,700 joules. You can already see …
estimation
Could a Cockroach Survive a Fall From Space?
There’s some cool stuff going on here. Notice that for the objects with air resistance, they all reach incredibly high velocities as they fall in the upper atmosphere where they …
Which Spider-Man Is Stronger: Tobey Maguire or Tom Holland?
Next, I need the mass. Each car has an empty mass of 26,000 kilograms and a capacity of 34 seats, or 123 total passengers. From the clip, the train looks …
OK Surfers, How Much Would It Cost to Power Your Own Wave?
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That expression doesn’t look nice, but at least now the energy calculation is in terms of things that we actually know or can estimate. All we need to do is …