A television, (66
5w), a refrigerator,
(1.2kw), an electric kettle, (650w) and
10 lamps, (40w each) are connected in
series in a house. How much will it cost.
the house Keeper to switch on all the
appliances for 24hours if the cost of electron
is 15 kobo per kWh?

Ahorizontal wire is tied to supports at each end and vibrates in its second-overtone standing wave. the tension in the wire is 5.00 n, and the node-to-node distance in the standing wave is 6.28 cm. (a) what is the length of the wire? (b) a point at an anti- node of the standing wave on the wire travels from its maximum upward displacement to its maximum downward displacement in 8.40 ms. what is the wire's mass?

Anybody wanna ? (picture included? )

An architect plans to use solar energy to heat the next house he designs. what principle of absorption and infrared energy can be applied to the design of the new house? how could she apply to those principals?