Question 4. A glass windowpane in a home is 0.42 cm thick and of 1.0 m x 2.0 m. On a certain day, the indoor temperature is 35 °C and the putdoor temperature is 0°C. a) What is the rate at which energy is transferred by heat through the glass? b) How much energy is lost through the window in one day, assuming the Fomneratures inside and outside remain constant?

Consider a 3-m-high, 6-m-wide, and 0.3-m-thick brick wall whose thermal conductivity is k = 0.8 W/m K. On a certain day, the temperatures of the inner and the outer surfaces of the wall are measured to be 14°C and 2°C, respectively. Determine the rate of heat loss through the wall on that day.

The number of kilocalories in food is determined by calorimetry techniques in which the food is burned and the amount of heat transfer is measured. How many kilocalories per gram are there in a 5.00-g peanut if the energy from burning it is transferred to 0.500 kg of water held in a 0.100-kg aluminum cup, causing a 54.9°C temperature increase?

A glass windowpane in a home is 0.62 cm thick and has dimensions of 1.1 m × 1.7 m. On a certain day, the indoor temperature is 26°C and the outdoor temperature is 0°C. (a) What is the rate at which energy is transferred by heat through the glass? Answer in W (b) How much energy is lost through the window in one day, assuming the temperatures inside and outside remain constant? Answer in J

A 75.0 kg concrete block falls off a 7.5 m tall wall. If all the initial energy of the concrete block is absorbed by itself when it hits the ground. What is the change in temperature of the concrete block (specific heat of concrete is 880 J/kg K)?

A 12-cm x 18-cm circuit board houses on its surface 100 closely spaced logic chips, each dissipating 0.06 W in an environment at 40°C. The heat transfer from the back surface of the board is negligible. If the heat transfer coefficient on the surface of the board is 10 W/m2.K, determine (a) the heat flux on the surface of the circuit board, in W/m2;

A 1,240 kg car going 30 m/s is brought to a stop using its brakes. Let's assume that a total of approximately 30 kg of iron in the brakes and wheels absorbs the heat produced by the friction. (a) What was the car's original kinetic energy (in J)?  J (b) After the car has stopped, what is the change in temperature (in °C) of the brakes and wheels?  °C

Rubbing your hands together warms them by converting work into thermal energy. a. If a woman rubs her hands a total of 19 times (forward and backwards count separately), at a distance of 7.75 cm per rub, and with an average frictional force of 39 N, what is the temperature increase of her hands, in degrees Celsius? The mass of tissues warmed is only 0.100 kg, mostly in the palms and fingers, and the heat capacity of her hands is 3500 J/(kg⋅°C).