A girl is walking a dog. The tension force applied to the dog is 20 N. If the mass of the dog is 25 kg.

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c

Is the portion of the electromagnetic spectrum that has a frequency just above that of visible light.