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- Electric energy is to be stored at a station in which 5000 condensers are connected in parallel. The capacity of each condenser is 200 μF. The system is to be charged to a P.D. of 50 kilovolt with a power supply which costs at a rate of Rs 1 per kilowatt hour. Calculate the cost of storing.Fig 8 40kg2. Lightbulb A was found out to give 30.0W of power, producing the same brightness as lightbulb B operating at 95.0W. The lifetime of A is 9,000 hours and can be bought at Php229.00. B has lifetime of 750 hours and can be bought at Php39.00. Which bulb is more efficient in energy saving? Determine the total amount saved when choosing the efficient bulb over the same period of time. Assume that Meralco charges Php 9.65 per kWh.
- Do it quickly.L 81 All surfaces are 300% eficlent. X-035 m k-290 N/m ww h 12 m 1. Calculate the box's initial amount of elastic potential energy.17.76 2. Calculate the box's initial amount of gravitational potential energy.1765.8My computer uses 15 W, if I run it for 3 hours how many Joules have I used?
- Calculate the energy released when 1000 small water drops each of the same radius 10-7m coalesce to form one large drop. The surface tension of water is 7.0 x 10-2N m-1. A 7.9 x 10-12J. 27.9 x 10-12J. C 37.9 x 10-12J. D 47.9 x 10-12J.It took an object 50 seconds to move from polnt A to B, then to CIf point Bis 10 m, ent of point A and 5 m. 5 40 W of point C what Is the average velocity of the object? O 10 46-0.11/ ImsEx. 72: A uniform copper wire of length 5 m and diameter 3 x 10 m is extended by 103 m. Calculate the energy stored in the wire. Y = %3D 12 x 1010 N/m2.
- Vo Question 9 / 10 ميز هذا السؤال Determine the energy stored in Cq when C1= 15 µF, C2 = 10 µF, C3 = 20 µF, and V,= 36 V. 1. 0 0.48 mJ 2. O1.9 mJ 3. 04.3 mJ 4. 07.7 mJ 5. O 12.0 mJ Previous NextYou place an ice cube in a microwave oven. If it requires 32,165 J to melt the ice cube and the oven delivers 98 W of power to the ice cube, determine the time (in min) needed to melt the ice cube. minWill A or B have a greater change in kinetic energy or will they be equal?