If you follow a diet of 1600 food calories per day (1600 kilocalories), what is your average power consumption in Watts? (A food or "large" calorie is a unit of energy equal to 4.2 x10³ J.) Note for comparison that the power consumption in a table lamp is typically about 100 Watts.
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- EMF = Vo = 6 volts. and C = 5 μF Calculate the theoretical value of the charge (q) in the capacitor during charging at t = RC. Use equation 3.A dielectric-filled parallel-plate capacitor has plate area A = 10.0 cm2cm2 , plate separation d = 5.00 mmmm and dielectric constant k = 4.00. The capacitor is connected to a battery that creates a constant voltage V = 15.0 VV . Throughout the problem, use ϵ0 = 8.85×10−12 C2/N⋅m2C2/N⋅m2 . The dielectric plate is now slowly pulled out of the capacitor, which remains connected to the battery. Find the energy U2 of the capacitor at the moment when the capacitor is half-filled with the dielectric. The capacitor is now disconnected from the battery, and the dielectric plate is slowly removed the rest of the way out of the capacitor. Find the new energy of the capacitor, U3. In the process of removing the remaining portion of the dielectric from the disconnected capacitor, how much work is done by the external agent acting on the dielectric?13. Consider a square wire with side length 5 mm and conduc- tion electron density 6.0 x 1028 3 with 1.2 A of current flowing through it. a) What is the current density? (include units) 1
- #87: The flash unit in a camera uses a special circuit to “step up” the 3.0 V from the batteries to 300 V, which charges a capacitor. The capacitor is then discharged through a flashlamp. The discharge takes 10 ms, and the average power dissipated in the flashlamp is 105 W. What is the capacitance of the capacitor?En la figura = 12V, R = 62 R2 = 122 R3 = 42 R4 = 32 R5 = 5 2 ¿Cuál es la diferencia de potencial en R5? ww ww Ra www wwYou wish to lift a 50 kg mass up a distance of 20 m. You use an electric motor to do the job that plugs into the wall (120 V). How much charge will flow through the motor to complete this job? (Hint: Potential Energy is equal to mgh)
- Problem Eight. The dielectric constants shown are ₁ 1.0, K₂ = 2.0, 0.20 m², and the distance = 3.0. The area of each plate is A between the plates is entire capacitor is 4.0 MV/m. K3 = d = 1.0 mm. The dielectric strength of the 30. Find the maximum energy (in mJ) that can be stored on the capacitor. (A) 8.0 (C) 6.0 (D) 24 (B) 1.0 (E) 36 K₁ K₂ K3How many joules are in 1 kWh (kilowatthour)?