Which energy is transferred by heat through glass

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Q1. A glass windowpane in a home is 0.620 cm thick and has dimensions of 0.93 m 1.90 m. On a certain day, temperature of the interior surface of the glass is 23.0 °C and the outdoor temperature is 0°C. Suppose the thermal conductivity of the glass is 0.80 W/m • °C.

What is the rate at which energy is transferred by heat through glass?

Q2. The wheels, axle, and handles of a wheelbarrow weigh W = 58 N. The load chamber and its contents weigh WL = 617 N. The drawing shows these two forces in two different wheelbarrow designs. To support the wheelbarrow in equilibrium, the man's hands apply a force to the handles that is directed vertically upward. Consider a rotational axis at point where the tire contacts the ground, directed vertical to the plane of the paper. Find out the magnitude of the man's force for both designs.

Reference no: EM139924

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