A shake flashlight uses the mechanical energyof the shaking action to charge a capacitor that operates theLED light. (a) If you shake the flashlight with an average forceof 2.0 N at a speed of 0.85 m>s, what mechanical power do youproduce? (b) If you shake the flashlight for 30 seconds, and75% of the mechanical energy is converted to electrical energy,how much energy is stored in the capacitor? (c) If the LED lampdraws 0.032 A at 3.1 V, for how much time will the capacitoroperate the LED?
Dielectric Constant Of Water
Water constitutes about 70% of earth. Some important distinguishing properties of water are high molar concentration, small dissociation constant and high dielectric constant.
Electrostatic Potential and Capacitance
An electrostatic force is a force caused by stationary electric charges /fields. The electrostatic force is caused by the transfer of electrons in conducting materials. Coulomb’s law determines the amount of force between two stationary, charged particles. The electric force is the force which acts between two stationary charges. It is also called Coulomb force.
A shake flashlight uses the mechanical energy
of the shaking action to charge a capacitor that operates the
LED light. (a) If you shake the flashlight with an average force
of 2.0 N at a speed of 0.85 m>s, what mechanical power do you
produce? (b) If you shake the flashlight for 30 seconds, and
75% of the mechanical energy is converted to electrical energy,
how much energy is stored in the capacitor? (c) If the LED lamp
draws 0.032 A at 3.1 V, for how much time will the capacitor
operate the LED?
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 3 images
