Physics, 29.03.2021 01:00 eysahvdtuj
A piece of lead of specific heat capacity of 120j/kgk falls through a distance of 30m from rest. calculate its rise in temperature (g=10m/s2
Answers: 1
Physics, 21.06.2019 20:30
F500 j of energy were added to 1 kg of each of these samples, which would experience the least temperature increase?
Answers: 2
Physics, 22.06.2019 18:30
Aheavy piece of hanging sculpture is suspended by a90-cm-long, 5.0 g steel wire. when the wind blows hard, the wire hums at its fundamental frequency of 80hz. what is the mass of the sculpture?
Answers: 3
Physics, 23.06.2019 05:30
Which class of lever is a baseball bat? what are the parts of a baseball bat's lever class? describe each one.enter your answer in the space provided.(this question you write your own answer.)i couldn't find the right category, so sorry if this doesn't match.
Answers: 1
Physics, 23.06.2019 08:00
Athin electrical heater is inserted between a long circular rod and a concentric tube with inner and outer radii of 20 and 40 mm. the rod (a) has a thermal conductivity of ka = 0.15 w/(m*k), while the tube (b) has a thermal conductivity of kb = 0.8 w/(m*k) and its outer surface is subjected to convection with a fluid of temperature t= -15°c and heat transfer coefficient 60 w/(m2 *k). the thermal contact resistance between the cylinder surfaces and the heater is negligible. (a) determine the electrical power per unit length of the cylinders (w/m) that is required to maintain the outer surface of cylinder b at 15°c. (b) what is the temperature at the center of cylinder a?
Answers: 2
A piece of lead of specific heat capacity of 120j/kgk falls through a distance of 30m from rest. cal...
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