Physics, 06.05.2020 20:15, cpalabamagirl2595
A thermometer is removed from a beaker of boiling water and placed in a beaker of room temperature water. The thermometer
takes 15 seconds to reach a reading of 25°C. The same thermometer is returned to the boiling water for several minutes. It is
then placed under a tap of running water at room temperature. The thermometer takes only 10 seconds to reach a reading of
25°C
What conclusion could you make about conduction and convection based on these observations?
Conduction is a more efficient method of heat transfer
Convection is a more efficient method of heat transfer
No valid conclusion is suggested by these observations:
Conduction and convection are equally efficient methods of heat transfer
Answers: 3
Physics, 22.06.2019 10:00, autumnskye1
In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final
Answers: 3
Physics, 23.06.2019 04:50, mexprencss
By examining a wave’s pattern after it interacts with a barrier or gap, measurements can be made to better understand certain wave phenomena. what is a broad question you can answer by doing this experiment?
Answers: 2
Physics, 23.06.2019 07:00, aesthvx44
A55-kg pilot flies a jet trainer in a half vertical loop of 1200-m radius so that the speed of the trainer decreases at a constant rate. knowing that the plane has a speed of 550 km/h at point a, and the pilot experiences weightlessness at point c (i. e., the normal force from the seat bottom is zero), determine (a) the deceleration of the plane, (b) the force exerted on her by the seat of the trainer when the trainer is at point b.
Answers: 2
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