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A sea diver's suit has a thickness of 5 mm and is made of a material with thermal conductivity of 0.05 W/mK. If the diver's skin is 33°C and the water temperature is 5°C and the heat transfer coefficient between the water and the diver is 50 W/m2 K.
a. How much heat does the diver lose per unit surface area?
b. What is the outer temperature of the suit?
c. If the diver wants to cut his heat loss per unit surface area into half, what should the thickness of his suit be?
A 15-kg iron ball is dropped onto a pavement from a height of 80m. Suppose half of the heat generated goes into warming the ball. What is the temperature increase of the ball in degree C
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A golfer takes two putts to get his ball into the hole once he is on green. The first putt displaces the ball into the ball 6.7 m east, and the second 2.16 m south. What displacement would have been needed to get the ball into the hole on first putt.
A sound wave in air has a frequency of 264Hz and travels with a speed of 347m/s. How far apart are the wave crests
A 1000N beam is loaded with a 2000N filing cabinet and supported by two cables. If the beam is 8 meters long and the filing cabinet is 2 meters from the left cable, what is the tension force in each cable? total of both tension? tension in left cable..
You carry a 7.0 kg bag of groceries across a 5.3 m room, where the room's flat floor is a 1.2 m above the ground. How much work do you do on the bag in the process
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