An ice-box is built of wood 1.75 cm thick, lined with cork 3 cm thick. If in the steady state the temperature of the inner surface of the cork is 0 ºC and that of the outer surface of wood is 12 ºC, what is the temperature of the wood-cork interface? The thermal conductivities of wood and cork are 0.2 W/m-K and 0.04 W/m-K respectively

2679

This person established the one fluid theory of electricity and performed some of the first investigations into electrical grounding and insulation:

948

I just want to convert the voltage into current i.e. suppose I have 750V & 1A AC power then I want to convert it into 12V & 62A DC power only difficulty is that I don't want to use the tranceformer. Simply to say, I want to make the step-down without using tranceformer. Please, give me some ideas. And also I want the relation between Magnetic Induction & Weight of the body can be levitated. Or I can say, how much of magnetic induction requires to lift 500gms weight? I am heartily thankful to you.

2213

What is cardiac output?

1047

Giraffe in Arabic means "the highest of all." The height of a giraffe is an average of 5 m, its mass is about 800 kg and hooves is an area of approximately 625 cm2. Using a straw from a material nedeformabil a giraffe trying to drink water from a lake, not to condescend. What is the ratio of the minimum pressure to be applied giraffe, mouth, at the end paiului to drink water and pressure of giraffe on the ground. The density of water. g = 10 m/s2

2121

Explain what is larger the force the earth exerts on you or the force you exert on the earth?

956

What two properties of electromagnetic waves are used to attach info to radio signals?

932

If the moons orbit is inclined slightly relative to the earths orbit what effect does this have on eclipses?

1067

With the formula Frequency=(np)/120 were does the 120 come from I realize it to be a constant but how was it determined

3106

When sound waves travel from air to water, what happens to its frequency?

990

How about the particle-wave duality? : quantum physics

922

What are wave fronts?

1143

Tell me how many neutrons and how many protons are present in a single deuterium nucleus?

910

Explain the advantage of fixed pulley?

968

How much does automotive oil weigh?

1018