Comments and Discussions You don't need to login to post your comment Comments: 30 Views: 60k Likes: 120k votes pOop ~ Manajao 🌐 India It's because, 30 minutes has 60 seconds 60s x 30ms = 1800s 90,000N/1800s =50 watts Was this answer helpful? votes Anonymous 🌐 India TQ Was this answer helpful? Submit