Physics, 17.09.2021 08:40 hijrjdkfjd
The piece of metal is heated in boiling water until t has reached the temperature of the water. It is then transferred rapidly to some water in a well-insulated cup. A very sensitive thermometer is used to measure the initial and final temperatures of the water in the cup.
specific heat capacity of water = 4200 J/(kgK)
The readings from the experiment are as follows.
mass metal = 0.050 kg
mass of water in cup = 0.200 kg initial temperature of water in cup = 21.1°C
final temperature of water in cup = 22.9°C
(i) Calculate the temperature rise of the water in the cup and the temperature fall of
the piece of metal.
temperature rise of water =
temperature fall of metal =
[1]
(ii) Calculate the thermal energy gained by the water in the cup. State the equation that you use.
thermal energy gained =
Answers: 1
Physics, 22.06.2019 02:20
22. the effect of threshold braking is to a cause skids. b. lock wheels. c. prevent locking of wheels. d. increase stopping distance.
Answers: 2
Physics, 22.06.2019 12:10
Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?
Answers: 2
Physics, 22.06.2019 16:50
Calculate the first and second velocities of the car with four washers attached to the pulley, using the formulas v1 = 0.25 m / t1 , and v2 = 0.25 m / (t2 – t1) where t1 and t2 are the average times the car took to reach the 0.25 and the 0.50 meter marks. record these velocities, to two decimal places, in table e.
Answers: 2
Physics, 22.06.2019 23:00
Which wave is the result of amplification and produces a louder sound
Answers: 1
The piece of metal is heated in boiling water until t has reached the temperature of the water. It i...
Mathematics, 21.08.2019 10:30
Social Studies, 21.08.2019 10:30
Mathematics, 21.08.2019 10:30
History, 21.08.2019 10:30
Mathematics, 21.08.2019 10:30
Mathematics, 21.08.2019 10:30
History, 21.08.2019 10:30
Mathematics, 21.08.2019 10:30
Geography, 21.08.2019 10:30
English, 21.08.2019 10:30
History, 21.08.2019 10:30
Mathematics, 21.08.2019 10:30
Physics, 21.08.2019 10:30
Health, 21.08.2019 10:30