subject
Physics, 05.09.2020 06:01 ntrann22

The energy density in a pellet of algae is determined by a bomb calorimetry technique, in which the food is burned (in an oxygen rich environment) and the amount of heat transfer ismeasured. How many joules of energy per kilogram are there in dried algae if when burning a5.00 g algae pellet, and transferring this energy to 0.500 kg of water held in a 0.100 kg aluminumcup, a 54.9oC temperature increase is observed? The specific heat of water is 4186 J/(kg K) andthe specific heat of aluminum is 900 J/(kg K)

ansver
Answers: 1

Another question on Physics

question
Physics, 22.06.2019 03:50
The force acting on a beam was measured under the same operating conditions and a sample of 5 data points was collected. this process was repeated by 3 observers. the pooled standard deviations of these 3 data sets was 1.21. determine the true mean force using all pooled data (with a 95% probability). the result should look like this: true mean = mean +/- margin of error
Answers: 1
question
Physics, 22.06.2019 15:00
What is the major limitation to the light microscope?
Answers: 1
question
Physics, 22.06.2019 15:30
At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.
Answers: 1
question
Physics, 22.06.2019 21:10
An athlete swings a ball, connected to the end of a chain, in a horizontal circle. the athlete is able to rotate the ball at the rate of 8.13 rev/s when the length of the chain is 0.600 m. when he increases the length to 0.900 m, he is able to rotate the ball only 6.04 rev/s. (a) which rate of rotation gives the greater speed for the ball? 6.04 rev/s 8.13 rev/s (b) what is the centripetal acceleration of the ball at 8.13 rev/s? m/s2 (c) what is the centripetal acceleration at 6.04 rev/s? m/s2
Answers: 2
You know the right answer?
The energy density in a pellet of algae is determined by a bomb calorimetry technique, in which the...
Questions
question
Biology, 06.06.2020 03:00
Questions on the website: 13722360