Recent content by Number1

A small 5.48 g plastic ball is suspended by a 24.7 cm long string in a uniform electric field of 3980 N/C, as shown.The acceleration of gravity is 9.8 m/s2 , and the Coulomb constant is 8.99×109 N · m2/C2.. If the ball is in equilibrium when the string makes a 27.6◦ angle with the vertical...

If each water molecule donates one electron, how much water is ionized in the lightning? One mole of water has a mass of 18.1 g/mol. Answer in units of g. Avogadro’s number is 6.02214e23 /mol. ok so this is what i did... (18.1grams/1mole)(1mol/6.02214e23 molecules)=3.005576e-23...

I mean on the top of the x-axis or y=0 intercept and the bottom of the axis

Yea but if you try it out you get 2 circles! How do i know which one you are talking about? One is small another is large. The smaller one is on the bottom and the larger one is on the top.

I still don't understand. How do you know that the x value for the center is 4?? the x- value can be anything.

Find the equation of a circle which is tangent to the x-axis at point (4, 0) and is tangent to line 3x-4y-17=0 Directed Distance, point slope formula... Ok so I knew that the x-axis is the equation y=0. I think but i am not sure that the directed distance between the tangent line...