Recent content by Kofyebs

Thanks

I am here to find out if my equation is correct.

I don't know. That's the question I got from my teacher. that's why I'm here for solutions.

Cuz they have different currents.

That's why I'm here for help.

Homework Statement Ammeter shows 1.2 A and 1.0 A. How large amount of charge passing through the lamp in 1 minute? https://physicsforums-bernhardtmediall.netdna-ssl.com/data/attachments/84/84982-6e293679b3592fb475f0f9cac697526f.jpg Homework Equations Q=I*t[/B] The Attempt at a Solution I =...

Yes! I understand now. Thanks once again. you've saved me. ;)

Homework Statement Calculate the net force on A.[/B] Homework Equations F=k . (q1 q2)/r^2 , k=9 x 10^9 Nm^2/C^2[/B]The Attempt at a Solution (9*10^9 Nm^2/C^2)(1,4 x 10^-6C)(7,2 x 10^-6C) / 1,7mm^2 = 0,0313. Could someone tell me what I am missing even if what i did is even correct. Thanks[/B]

Can you please show me the right equation then. Thanks

Thanks very Replusz.

Please check this if I am right. BOLL = △KE = ½ = mv² BOLL= ½(2kg)(140km/h)² - ½(2kg)(50km/h)² BOLL= 17,100 J %△ = 19600 J – 2500 J = 17100 J = 17100 J / 19600 J = 0.87 = 0.80 x 100 = 87 %△ = 87%

Stefan throws a baseball with the speed of 140 km/ℎ. The ball goes obviously in goal, but it bounces back out of the net with a speed of 50 km/ℎ. What percentage of the kinetic energy remaining after contact with the net?

my name is Kofi and I am here to learn and understand physics