For 12 V lines, three consecutive LEDs and a resistor are used for lighting. The voltage drop across each LED is 3 V. What is the resistance of the resistor if a current of 50 mA flows through the circuit?

Which radio wave technologies would be unaffected by satellites that are not working properly? A. space communication and television broadcasting B. television broadcasting and GPS C. MRI and radio telescopes D.

Which of the following describes an electric fan?

A horizontal force accelerates a cart of mass 200 kg from 0 to 30 m/s on a horizontal smooth surface. If the horizontal distance the force acts over is 12 m, what is the magnitude of the force?

Electromagnets 23. To hold fire doors open, an electromagnet is switched on, generating a magnetic field If a solenoid is 2.00 cm long, has 400 turns, carries a current of 1.

What is true for the critical incident angle? A The incident angle is the angle for which the angle of refraction is 90°. B The incident angle goes from a low to a higher index of refraction.

What are the two main currents that affect the US on the east and west coast?

What role do volcanoes play in the flow of energy and cycling of matter on earth?

How does uniform linear motion differ from uniform circular motion?

A metal underground water pipe that is in direct contact with the Earth for? or more is a code-recognized as a grounding electrode and must be included in the grounding electrode system.

Bob has been Springfield's top meteorologist for ten years. He received data from satellite imaging and computer models that a huge storm system is headed Springfield's way.