Questions with the keyword 'energy'

• is your work enviromentally friendly? by mexicanimmagrants to Charlie Comments: (No comments so far )
• have you heard of a hydrogen fuel cell? by 08bowmanl to Charlie, Eoin, Jemma, Julian, Steve Comments: (No comments so far )
• will cars ever be run on air? by abbytasker to Charlie, Eoin, Jemma, Julian, Steve Comments: (No comments so far )
• explain to me the rules why a propetual motion device is imposible because i think with more balls that device you can by lou96 to Charlie, Eoin, Jemma, Julian, Steve Comments: (No comments so far )