Questions with the keyword 'weight'

• how much does the earth weigh by Stakhar03-4thebants to MariaMagdalena Comments: (No comments so far )
• how can planes fly if they weigh so much by alf to Monique Comments: (No comments so far )
• Could we one day make indestructible cards without making them very heavy? by Shanzayasaurus to Bernard Comments: (No comments so far )
• how much does the material way in stone? by 563tntd52 to Bernard Comments: (No comments so far )