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1. A television (65W), a refrigerator (1.2kw), an electric kettle( 650W), and 10 lamps (40 W each) are connected in series in a house. How much will it cost the house keeper to switch on all appliances for 24 hours if the cost of electricity is 15 kobo per kilowatt hour?
2. Outline the differences between solids, liquids and gases in terms of
a. The separation of the molecules
b. The motion of the molecules
c. The arrangement of the molecules throughout the bulky material
3. A force of 40 N stretches a wire through 3.0 cm. what force will stretch will stretch it through 5.0 cm and through what length will a force of 100 N stretch it? What assumption have you made?
A box is at rest on a horizontal table. Is it because of the first law, second law, and or third law of motion that those two forces are equal
A 2.5 kg block of ice at a temperature of 0.0 C and an initial speed of 5.7 m/s slides across a leveled floor. If 3.3 x 10^5 J are required to melt 1.0 kg of ice, how much ice melts, assuming that the initial kinetic energy of the ice block is entire..
1a.if the sun subtends a solid angle omega on the sky and the flux from the sun just above the earths atmosphere
A generator has 810 turns of wire wound with coils having a diameter of 0.310 m. How fast is this generator rotating
Two men decide to use their cars to pull a truck stuck in mud. What is the net forward force exerted on the truck in the direction it is headed
A plank 2.00 cm thick and 14.0 cm wide is tightly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m horizontally over the sea below. A man of mass 70.5 kg is forced to stand on the very end.
If θ = 25.0o, find the mass of the pendulum bob in grams. Assume that the string that attaches it to the ceiling is negligible, and that you are at Earth's surface.
How far does the object compress the spring if same experiment is performed on the moon, where g = 1.63 m/s2 and air resistance is neglected.
An AC generator has an output rms voltage of 78 V at a frequency of80 Hz. If the generator is connected across a 25-mH inductor, discover the: inductive reactance
A horizontal power line carries a current of 4880 A from south to north. Earth's magnetic field (75.1 µT) is directed toward the north and is inclined downward at 52.0° to the horizontal. Discover the magnitude of the magnetic force on 110 m of the l..
Find the total energy stored in this network. Find the energy stored in the 4.80?F capacitor.
A golfer hits a shot to a green that is elevated 3 m above the point where the ball is struck. Find the speed of the ball just before it lands
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