A standing wave on a string (clamped at both ends) of length 50 cm is vibrating at the fundamental frequency of 100 Hz. If the tension in the string is 200 N, what is the mass of the string

Why is alternating current more effective at long–distance travel than direct current? a. the power lines are made out of conductors. b. transformers increase or decrease voltage as needed. c. the ac generator is more efficient. d. ac has lower voltage than dc.

What is the speed of an object at a given moment?

Match these items. 1. coulombs __force 2. ohms __emf 3. centimeters __resistance 4. newtons __charge 5. volts __length